Method and system for automatically calibrating control logic of a vehicle control system
First Claim
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1. A method for automatically calibrating control logic of a vehicle control system including a vehicle-mounted, microprocessor-based control unit having a first memory, an addressable second memory, and a working third memory, the method comprising the steps of:
- loading a selectable indicator into the first memory;
loading a plurality of calibration tables into the second memory wherein each calibration table has a unique address and contains calibration data for a specific group of vehicles;
addressing one of the calibration tables based on the selectable indicator; and
loading the one of the calibration tables into the working third memory for automatically calibrating the control logic according to the vehicle in which it is mounted.
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Abstract
A non-volatile RAM stores a selectable trim indicator which, in turn, is used to select one of a plurality tables of trim constant data from read-only memory. The selected table of trim constant data is loaded into working memory of a microprocessor-based control unit to thereby calibrate control logic of an automotive ABS for the vehicle in which the control unit is mounted.
27 Citations
16 Claims
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1. A method for automatically calibrating control logic of a vehicle control system including a vehicle-mounted, microprocessor-based control unit having a first memory, an addressable second memory, and a working third memory, the method comprising the steps of:
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loading a selectable indicator into the first memory; loading a plurality of calibration tables into the second memory wherein each calibration table has a unique address and contains calibration data for a specific group of vehicles; addressing one of the calibration tables based on the selectable indicator; and loading the one of the calibration tables into the working third memory for automatically calibrating the control logic according to the vehicle in which it is mounted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for manufacturing and automatically calibrating control logic of a vehicle control system including a vehicle-mounted, microprocessor-based control unit having a non-volatile RAM with a plurality of storage locations, an addressable read-only memory, and a working third memory, the method comprising the steps of:
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loading a plurality of calibration tables into the read-only memory wherein each calibration table has a unique address and contains trim constant data for a particular group of vehicles; loading a selectable trim indicator into a plurality of locations of the non-volatile RAM to obtain redundancy; resetting the control unit; comparing the value of the selectable indicator in each of the plurality of locations; addressing one of the calibration tables based on the step of comparing; and loading the one of the calibration tables into the working third memory for automatically calibrating the control logic of the control unit according to the vehicle in which it is mounted.
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10. A system for automatically calibrating control logic of a vehicle control system including a vehicle-mounted, microprocessor-based control unit including an addressable memory and a working memory, the system comprising:
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a non-volatile memory for storing a selectable indicator; and a plurality of addressable calibration tables stored in the addressable memory wherein each calibration table has a unique address and contains calibration data which corresponds to characteristics of a particular group of vehicles, one of the calibration tables being selected by the selectable indicator to automatically load the calibration data required to calibrate the control logic of the control unit for the vehicle on which the control unit is mounted into the working memory to thereby automatically calibrate the control logic. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A system for automatically calibrating control logic of a vehicle control system including a vehicle-mounted, microprocessor-based control unit including an addressable read-only memory and a working memory, the system comprising:
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a non-volatile RAM including a plurality of storage locations for storing a selectable trim indicator in a plurality of locations thereof to obtain redundancy; means for comparing the selectable indicator in each of the plurality of locations; and a plurality of addressable calibration tables stored in the addressable memory wherein each calibration table has a unique address and contains trim constant data which corresponds to characteristics of a particular group of vehicles, one of the calibration tables being selected based upon the comparison to automatically load the trim constant data required to calibrate the control logic of the control unit for the vehicle on which the control unit is mounted into the working memory to thereby automatically calibrate the control logic of the control unit.
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Specification