Engineering assist method and system
First Claim
Patent Images
1. A car engineering assist method comprising:
- establishing a master data;
setting a computer-generated virtual car model to represent at least a portion of a product design specification (PDS) of a test car;
performing computer simulation of a test module using the car model, which has been set to represent at least the portion of the PDS of the test car, to produce a simulation result;
performing conformity assessment of the test module based on the simulation result and the master data; and
outputting the conformity assessment result,wherein the master data includes alternative characteristics for conformity assessment of the test module in terms of its system operation and for conformity assessment of the test module in terms of its effectiveness on the test car; and
wherein the master and test modules are of an anti-lock braking system (ABS), wherein processing the simulation result creates, as the alternative characteristic of the test module in terms of its effectiveness on the test car, a deceleration factor that is expressed as a ratio between average of deceleration and peak thereof on constraint of antilock braking, and wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car, a desired value of the deceleration factor.
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Abstract
A car engineering assist system and method establish a master data and set a computer-generated virtual car model to represent at least a portion of a product design specification (PDS) of a test car. A real time simulator performs computer simulation of a test module using the car model, which has been set to represent at least the portion of the PDS of the test car, to produce a simulation result. A logic unit performs conformity assessment of the test module based on the simulation result and the master data.
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Citations
30 Claims
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1. A car engineering assist method comprising:
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establishing a master data; setting a computer-generated virtual car model to represent at least a portion of a product design specification (PDS) of a test car; performing computer simulation of a test module using the car model, which has been set to represent at least the portion of the PDS of the test car, to produce a simulation result; performing conformity assessment of the test module based on the simulation result and the master data; and outputting the conformity assessment result, wherein the master data includes alternative characteristics for conformity assessment of the test module in terms of its system operation and for conformity assessment of the test module in terms of its effectiveness on the test car; and wherein the master and test modules are of an anti-lock braking system (ABS), wherein processing the simulation result creates, as the alternative characteristic of the test module in terms of its effectiveness on the test car, a deceleration factor that is expressed as a ratio between average of deceleration and peak thereof on constraint of antilock braking, and wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car, a desired value of the deceleration factor. - View Dependent Claims (2)
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3. A car engineering assist method comprising:
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establishing a master data; setting a computer-generated virtual car model to represent at least a portion of a product design specification (PDS) of a test car; performing computer simulation of a test module using the car model, which has been set to represent at least the portion of the PDS of the test car, to produce a simulation result; performing conformity assessment of the test module based on the simulation result and the master data; and outputting the conformity assessment result, wherein the master data includes alternative characteristics for conformity assessment of the test module in terms of its system operation and for conformity assessment of the test module in terms of its effectiveness on the test car; wherein the master and test modules are of a traction control system (TCS), wherein processing the simulation result creates, as the alternative characteristics of the test module in terms of its effectiveness on the test car, the time integral of longitudinal car acceleration over span from the first occurrence of wheel slip to the subsequent convergent point thereof on constraint of traction control, and a change in longitudinal car acceleration between the average of longitudinal car acceleration over span from the first occurrence of wheel slip to the subsequent convergent point thereof and the minimum longitudinal car acceleration on constraint of traction control, and wherein the master data includes, as the alternative characteristics for conformity assessment of the test module in terms of its effectiveness on the test car, a desired value of the time integral of longitudinal car acceleration and a desired value of the change in longitudinal car acceleration. - View Dependent Claims (4)
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5. A car engineering assist method comprising:
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establishing a master data; setting a computer-generated virtual car model to represent at least a portion of a product design specification (PDS) of a test car; performing computer simulation of a test module using the car model, which has been set to represent at least the portion of the PDS of the test car, to produce a simulation result; performing conformity assessment of the test module based on the simulation result and the master data; and outputting the conformity assessment result, wherein the master data includes alternative characteristics for conformity assessment of the test module in terms of its system operation and for conformity assessment of the test module in terms of its effectiveness on the test car; wherein the master and test modules are of a vehicle dynamics control (VDC) system, wherein processing the simulation result creates, as the alternative characteristic of the test module in terms of its effectiveness on the test car, a car slip angle hysteresis on constraint of VDC, and wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in its effectiveness on the test car, a desired form of the car slip angle hysteresis. - View Dependent Claims (6)
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7. An engineering assist system comprising:
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a master data; a test module; a real time simulator performing computer simulation of the test module using a computer-generated virtual car model, which is set to represent at least a portion of a product design specification (PDS) of a test car, to produce a simulation result; a logic unit performing conformity assessment of the test module based on the simulation result and the master data; and an output interface outputting the conformity assessment result, wherein the master data is established on a knowledge base that a master car installed with a master module exhibits a predetermined level of performance and the master module exhibits a predetermined level of system operation; wherein the master and test modules are of a system, including an actuator under control of a microprocessor based controller; wherein the system is one of an anti-lock braking system (ABS), a traction control system (TCS) and a vehicle dynamics control (VDC) system; wherein the master data includes alternative characteristics for conformity assessment of the test module in terms of its system operation, and wherein the simulation result is processed to create alternative characteristics of the test module in its system operation; wherein the test module is the ABS, wherein the simulation result produced by the real time simulator includes variations of wheel braking force against time, which are processed to create, as the alternative characteristic of the test module in terms of its system operation, a variation characteristic of wheel braking force, and wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in terms of its system operation, a desired variation characteristic of wheel braking force. - View Dependent Claims (8, 9)
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10. An engineering assist system comprising:
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a master data; a test module; a real time simulator performing computer simulation of the test module using a computer-generated virtual car model, which is set to represent at least a portion of a product design specification (PDS) of a test car, to produce a simulation result; a logic unit performing conformity assessment of the test module based on the simulation result and the master data; and an output interface outputting the conformity assessment result, wherein the master data is established on a knowledge base that a master car installed with a master module exhibits a predetermined level of performance and the master module exhibits a predetermined level of system operation; wherein the master and test modules are of a system, including an actuator under control of a microprocessor based controller; wherein the system is one of an anti-lock braking system (ABS), a traction control system (TCS) and a vehicle dynamics control (VDC) system; wherein the master data includes an alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car, and wherein the simulation result is processed to create an alternative characteristic of the test module in its effectiveness on the test car; wherein the conformity assessment performed by the logic unit determines whether or not a deviation of the alternative characteristic of the test module in terms of its effectiveness on the test car from the alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car falls in a predetermined range, and, if this is the case, makes a decision that the test module will have a predetermined level of fit to the test car; wherein the test module is the ABS, wherein the simulation result produced by the real time simulator includes variations of car longitudinal acceleration against time, which are processed to create, as the alternative characteristic of the test module in terms of its effectiveness on the test car, a variation characteristic of car longitudinal acceleration, and wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car, a desired variation characteristic of car longitudinal acceleration. - View Dependent Claims (11)
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12. An engineering assist system comprising:
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a master data; a test module; a real time simulator performing computer simulation of the test module using a computer-generated virtual car model, which is set to represent at least a portion of a product design specification (PDS) of a test car, to produce a simulation result; a logic unit performing conformity assessment of the test module based on the simulation result and the master data; and an output interface outputting the conformity assessment result, wherein the master data is established on a knowledge base that a master car installed with a master module exhibits a predetermined level of performance and the master module exhibits a predetermined level of system operation; wherein the master and test modules are of a system, including an actuator under control of a microprocessor based controller; wherein the system is one of an anti-lock braking system (ABS), a traction control system (TCS) and a vehicle dynamics control (VDC) system; wherein the master data includes alternative characteristics for conformity assessment of the test module in terms of its system operation, and wherein the simulation result is processed to create alternative characteristics of the test module in its system operation; wherein the test module is the TCS, wherein the simulation result produced by the real time simulator includes variations of wheel spin velocity against time, which are processed to create, as the alternative characteristic of the test module in terms of its system operation, a variation characteristic of wheel spin velocity, wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in terms of its system operation, a desired variation characteristic of wheel spin velocity. - View Dependent Claims (13, 14)
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15. An engineering assist system comprising:
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a master data; a test module; a real time simulator performing computer simulation of the test module using a computer-generated virtual car model, which is set to represent at least a portion of a product design specification (PDS) of a test car, to produce a simulation result; a logic unit performing conformity assessment of the test module based on the simulation result and the master data; and an output interface outputting the conformity assessment result; wherein the master data is established on a knowledge base that a master car installed with a master module exhibits a predetermined level of performance and the master module exhibits a predetermined level of system operation; wherein the master and test modules are of a system, including an actuator under control of a microprocessor based controller; wherein the system is one of an anti-lock braking system (ABS), a traction control system (TCS) and a vehicle dynamics control (VDC) system; wherein the master data includes an alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car, and wherein the simulation result is processed to create an alternative characteristic of the test module in its effectiveness on the test car; wherein the conformity assessment performed by the logic unit determines whether or not a deviation of the alternative characteristic of the test module in terms of its effectiveness on the test car from the alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car falls in a predetermined range, and, if this is the case, makes a decision that the test module will have a predetermined level of fit to the test car; wherein the test module is the TCS, wherein the simulation result produced by the real time simulator includes variations of car longitudinal deceleration against time, which are processed to create, as the alternative characteristic of the test module in terms of its effectiveness on the test car, a variation characteristic of car longitudinal acceleration, and wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car, a desired variation characteristic of car longitudinal acceleration. - View Dependent Claims (16)
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17. An engineering assist system comprising:
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a master data; a test module; a real time simulator performing computer simulation of the test module using a computer-generated virtual car model, which is set to represent at least a portion of a product design specification (PDS) of a test car, to produce a simulation result; a logic unit performing conformity assessment of the test module based on the simulation result and the master data; and an output interface outputting the conformity assessment result, wherein the master data is established on a knowledge base that a master car installed with a master module exhibits a predetermined level of performance and the master module exhibits a predetermined level of system operation; wherein the master and test modules are of a system, including an actuator under control of a microprocessor based controller; wherein the system is one of an anti-lock braking system (ABS), a traction control system (TCS) and a vehicle dynamics control (VDC) system; wherein the master data includes alternative characteristics for conformity assessment of the test module in terms of its system operation and for conformity assessment of the test module in terms of its effectiveness on the test car, and wherein simulation data is processed to create alternative characteristics of the test module in terms of its system operation and in terms of its effectiveness on the test car; wherein the conformity assessment performed by the logic unit determines whether or not each of a set of deviations of the alternative characteristics of the test module in terms of its system operation from the alternative characteristics for conformity assessment of the test module in terms of its system operation falls in a predetermined range; wherein the conformity assessment performed by the logic unit determines whether or not a deviation of the alternative characteristics of the test module in terms of its effectiveness on the test car from the alternative characteristics for conformity assessment of the test module in terms of its effectiveness on the test car falls in a predetermined range; wherein the conformity assessment performed by the logic unit makes a decision that modification to the test module has been completed and the test module as modified will have a predetermined level of fit to the test car upon determination that each of the set of deviations of the alternative characteristics of the test module in terms of its system operation from the alternative characteristics for conformity assessment of the test module in terms of its system operation fails to fall in the predetermined range, and the deviation of the alternative characteristics of the test module in terms of its effectiveness on the test car from the alternative characteristics for conformity assessment of the test module in terms of its effectiveness on the test car falls in the predetermined range; wherein the test module is the TCS, wherein the simulation result produced by the real time simulator includes variations of wheel spin velocity against time, which are processed to create, as the alternative characteristic of the test module in terms of its system operation, a variation characteristic of wheel spin velocity, wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in terms of its system operation, a desired variation characteristic of wheel spin velocity, wherein the simulation result produced by the real time simulator includes variations of longitudinal car acceleration against time, which are processed to create, as the alternative characteristic of the test module in terms of its effectiveness on the test car, a variation characteristic of longitudinal car acceleration, and wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car, a desired variation characteristic of longitudinal car acceleration. - View Dependent Claims (18, 19)
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20. An engineering assist system comprising:
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a master data; a test module; a real time simulator performing computer simulation of the test module using a computer-generated virtual car model, which is set to represent at least a portion of a product design specification (PDS) of a test car, to produce a simulation result; a logic unit performing conformity assessment of the test module based on the simulation result and the master data; and an output interface outputting the conformity assessment result, wherein the master data is established on a knowledge base that a master car installed with a master module exhibits a predetermined level of performance and the master module exhibits a predetermined level of system operation; wherein the master and test modules are of a system, including an actuator under control of a microprocessor based controller; wherein the system is one of an anti-lock braking system (ABS), a traction control system (TCS) and a vehicle dynamics control (VDC) system; wherein the master data includes alternative characteristics for conformity assessment of the test module in terms of its system operation, and wherein the simulation result is processed to create alternative characteristics of the test module in its system operation; wherein the test module is the VDC system, wherein the simulation result produced by the real time simulator includes variations of slip angles of the front and rear axles against time, which are processed to create, as the alternative characteristic of the test module in terms of its system operation, a variation characteristic of slip angles of the front and rear axles, and wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in terms of its system operation, a desired variation characteristic of the slip angles of the front and rear axles. - View Dependent Claims (21, 22)
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23. An engineering assist system comprising:
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a master data; a test module; a real time simulator performing computer simulation of the test module using a computer-generated virtual car model, which is set to represent at least a portion of a product design specification (PDS) of a test car, to produce a simulation result; a logic unit performing conformity assessment of the test module based on the simulation result and the master data; and an output interface outputting the conformity assessment result; wherein the master data is established on a knowledge base that a master car installed with a master module exhibits a predetermined level of performance and the master module exhibits predetermined level of system operation; wherein the master and test modules are of a system, including an actuator under control of a microprocessor based controller; wherein the system is one of an anti-lock braking system (ABS), a traction control system (TCS) and a vehicle dynamics control (VDC) system; wherein the master data includes an alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car, and wherein the simulation result is processed to create an alternative characteristic of the test module in its effectiveness on the test car; wherein the conformity assessment performed by the logic unit determines whether or not a deviation of the alternative characteristic of the test module in terms of its effectiveness on the test car from the alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car falls in a predetermined range, and, if this is the case, makes a decision that the test module will have a predetermined level of fit to the test car; wherein the test module is the VDC system, wherein the simulation result produced by the real time simulator includes variations of car slip angle against time, which are processed to create, as the alternative characteristic of the test module in terms of its effectiveness on the test car, a variation characteristic of car slip angle, and wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car, a desired variation characteristic of car slip angle. - View Dependent Claims (24)
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25. An engineering assist system comprising:
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a master data; a test module; a real time simulator performing computer simulation of the test module using a computer-generated virtual car model, which is set to represent at least a portion of a product design specification (PDS) of a test car, to produce a simulation result; a logic unit performing conformity assessment of the test module based on the simulation result and the master data; and an output interface outputting the conformity assessment result; wherein the master data is established on a knowledge base that a master car installed with a master module exhibits a predetermined level of performance and the master module exhibits a predetermined level of system operation; wherein the master and test modules are of a system, including an actuator under control of a microprocessor based controller; wherein the system is one of an anti-lock braking system (ABS), a traction control system (TCS) and a vehicle dynamics control (VDC) system; wherein the master data includes alternative characteristics for conformity assessment of the test module in terms of its system operation and for conformity assessment of the test module in terms of its effectiveness on the test car, and wherein simulation data is processed to create alternative characteristics of the test module in terms of its system operation and in terms of its effectiveness on the test car; wherein the conformity assessment performed by the logic unit determines whether or not each of a set of deviations of the alternative characteristics of the test module in terms of its system operation from the alternative characteristics for conformity assessment of the test module in terms of its system operation falls in a predetermined range; wherein the conformity assessment performed by the logic unit determines whether or not a deviation of the alternative characteristics of the test module in terms of its effectiveness on the test car from the alternative characteristics for conformity assessment of the test module in terms of its effectiveness on the test car falls in a predetermined range; wherein the conformity assessment performed by the logic unit makes a decision that modification to the test module has been completed and the test module as modified will have a predetermined level of fit to the test car upon determination that each of the set of deviations of the alternative characteristics of the test module in terms of its system operation from the alternative characteristics for conformity assessment of the test module in terms of its system operation fails to fall in the predetermined range, and the deviation of the alternative characteristics of the test module in terms of its effectiveness on the test car from the alternative characteristics for conformity assessment of the test module in terms of its effectiveness on the test car falls in the predetermined range; wherein the test module is the VDC system, wherein the simulation result produced by the real time simulator includes variations of slip angles of the front and rear axles against time, which are processed to create, as the alternative characteristic of the test module in terms of its system operation, a variation characteristic of slip angles of the front and rear axles, wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in terms of its system operation, a desired variation characteristic of the slip angles of the front and rear axles, wherein the simulation result produced by the real time simulator includes variations of car slip angle against time, which are processed to create, as the alternative characteristic of the test module in terms of its effectiveness on the test car, a variation characteristic of car slip angle, and wherein the master data includes, as the alternative characteristic for conformity assessment of the test module in terms of its effectiveness on the test car, a desired variation characteristic of car slip angle. - View Dependent Claims (26, 27)
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28. An engineering assist system comprising:
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a master data; a test module; a real time simulator performing computer simulation of the test module using a computer-generated virtual car model, which is set to represent at least a portion of a product design specification (PDS) of a test car, to produce a simulation result; a logic unit performing conformity assessment of the test module based on the simulation result and the master data; wherein the master data is established on a knowledge base that the master car installed with a master module exhibits a predetermined level of performance and the master module exhibits a predetermined level of system operation; wherein the master and test modules are of a system, including an actuator under control of a microprocessor based controller; wherein the system is one of an anti-lock braking system (ABS), a traction control system (TCS) and a vehicle dynamics control (VDC) system; wherein the master data includes alternative characteristics for conformity assessment of the test module in terms of its system operation and for conformity assessment of the test module in terms of its effectiveness on the test car, and wherein simulation data is processed to create alternative characteristics of the test module in terms of its system operation and in terms of its effectiveness on the test car; wherein the conformity assessment performed by the logic unit determines whether or not each of a set of deviations of the alternative characteristics of the test module in terms of its system operation from the alternative characteristics for conformity assessment of the test module in terms of its system operation falls in a predetermined range; wherein the conformity assessment performed by the logic unit determines whether or not a deviation of alternative characteristics of the test module in terms of its effectiveness on the test car from the alternative characteristics for conformity assessment of the test module in terms of its effectiveness on the test car falls in a predetermined range; wherein the conformity assessment performed by the logic unit makes a decision that modification to the test module has been completed and the test module as modified will have a predetermined level of fit to the test car upon determination that each of the set of deviations of the alternative characteristics of the test module in terms of its system operation from the alternative characteristics for conformity assessment of the test module in terms of its system operation fails to fall in the predetermined range, and the deviation of the alternative characteristics of the test module in terms of its effectiveness on the test car from the alternative characteristics for conformity assessment of the test module in terms of its effectiveness on the test car falls in the predetermined range; wherein the test module is the ABS; wherein the simulation result produced by the real time simulator includes variations of wheel braking force against time, which are processed to create, as the alternative characteristics of the test module in terms of its system operation, a variation characteristic of wheel braking force; wherein the master data includes, as the alternative characteristics for conformity assessment of the test module in terms of its system operation, a desired variation characteristic of wheel braking force; wherein the simulation result produced by the real time simulator includes variations of longitudinal car acceleration against time, which are processed to create, as the alternative characteristics of the test module in terms of its effectiveness on the test car, a variation characteristic of longitudinal car acceleration; and wherein the master data includes, as the alternative characteristics for conformity assessment of the test module in terms of its effectiveness on the test car, a desired variation characteristic of longitudinal car acceleration. - View Dependent Claims (29, 30)
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Specification