Yaw motion control device
First Claim
1. A yaw motion control device for a vehicle, comprising:
- a steering angle sensor for detecting the steering angle of a steering wheel of the vehicle;
a steering angle memory means operatively connected to said steering angle sensor for storing at least a previous value of said steering angle;
a reference yaw rate generating means for generating a reference yaw rate in response to an input from said previous value of said steering angle from said steering angle memory means;
a yaw rate detecting means for detecting the yaw rate of the vehicle; and
a yaw motion correcting means for controlling the yaw motion of the vehicle in response to the outputs from said reference yaw rate generating means and said yaw rate detecting means.
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Abstract
A yaw motion control device for a vehicle includes a steering angle sensor for detecting the steering angle of a steering wheel of the vehicle and a steering angle memory means operatively connected to the steering angle sensor for storing at least a previous value of the steering angle. A reference yaw rate generator generates a reference yaw rate in response to an input from the steering angle memory, and a yaw rate detector detects the yaw rate of the vehicle. Further, a yaw motion corrector controls the yaw motion of the vehicle in response to the outputs from the reference yaw rate generator means and the yaw rate detector. The yaw motion control device set forth above can also be employed with a vehicle speed detector for detecting the speed of the vehicle, and for outputting the vehicle speed to said reference yaw rate generator to provide greater accuracy in controlling the yaw motion of the vehicle.
89 Citations
39 Claims
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1. A yaw motion control device for a vehicle, comprising:
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a steering angle sensor for detecting the steering angle of a steering wheel of the vehicle; a steering angle memory means operatively connected to said steering angle sensor for storing at least a previous value of said steering angle; a reference yaw rate generating means for generating a reference yaw rate in response to an input from said previous value of said steering angle from said steering angle memory means; a yaw rate detecting means for detecting the yaw rate of the vehicle; and a yaw motion correcting means for controlling the yaw motion of the vehicle in response to the outputs from said reference yaw rate generating means and said yaw rate detecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A yaw motion control device for a vehicle, comprising:
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a yaw rate detecting means for detecting the yaw rate of the vehicle; a reference yaw rate generating means, receiving an input from said yaw rate detecting means, and an input from at least one detected vehicle condition, for generating a reference yaw rate in response to said inputs; and a yaw motion correcting means for controlling the yaw motion of the vehicle in response to the outputs from said yaw rate detecting means and said reference yaw rate generating means. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A yaw motion control device for a vehicle, comprising:
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a reference yaw rate generating means for generating a reference yaw rate in response to inputs from at least one detected vehicle condition; reference yaw rate memory means, connected to an output of said reference yaw rate generating means, for storing at least a previous value of said reference yaw rate, and for inputting at least said stored previous value of said reference yaw rate to an input from said reference yaw rate generating means; a yaw rate detecting means for detecting the yaw rate of the vehicle; and a yaw motion correcting means for controlling the yaw motion of the vehicle in response to inputs from said reference yaw rate generating means, and said yaw rate detecting means. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A yaw motion control device for a vehicle, comprising:
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a reference yaw rate generating means for generating a reference yaw rate in response to inputs from at least one detected vehicle condition; a yaw rate detecting means for detecting the yaw rate of the vehicle; a steering characteristic determining means for determining an understeer or oversteer steering characteristic of the vehicle, as a function of said reference yaw rate and said yaw rate; and a yaw motion correcting means for reducing driving wheel torque to control the yaw motion of the vehicle in response to inputs from said reference yaw rate generating means, said yaw rate detecting means, and said steering characteristic determining means. - View Dependent Claims (31, 32, 33, 34)
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35. A yaw motion control device for a vehicle, comprising:
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a reference yaw rate generating means for generating a reference yaw rate in response to inputs from at least one detected vehicle condition; a yaw rate detecting means for detecting the yaw rate of the vehicle; a driving force distribution signal generating means for generating a signal based on the power distribution between the front and rear wheels of the vehicle; a control characteristic correcting means, receiving an output from said driving force distribution signal generating means, for providing an output therefrom in order to change the control characteristic of said yaw motion correcting means; a yaw motion correcting means for controlling the yaw motion of the vehicle in response to the outputs from said reference yaw rate generating means, said yaw rate detector, and said control characteristic correcting means. - View Dependent Claims (36, 37)
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38. A steering characteristic detector for determining an oversteering or understeering condition of a vehicle, comprising:
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a steering angle sensor for detecting the steering angle of a steering wheel of the vehicle; a reference yaw rate generating means for generating a reference yaw rate in response to inputs from said steering angle sensor; a yaw rate detecting means for detecting the yaw rate of the vehicle; a steering characteristic signal generating means for generating an output signal corresponding to an oversteering or understeering condition of the vehicle, in response to inputs from said reference yaw rate generator and from said yaw rate detecting means a deviation calculation circuit, interposed between said yaw rate detecting means and said steering characteristic signal generating means and receiving inputs from said yaw rate detecting means and said reference yaw rate generating means, for subtracting the reference yaw rate from the yaw rate, and inputting the resulting deviation value to said steering characteristic signal generating means; and wherein said steering characteristic signal generating means detects an oversteering condition when both said reference yaw rate and said deviation value are positive, or both are negative, and wherein said steering characteristic signal generating means detects an understeering condition when said reference yaw rate and said deviation value are opposite in sign. - View Dependent Claims (39)
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Specification