VEHICLE STABILITY ENHANCEMENT CONTROL
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Accused Products
Abstract
A side-slip velocity estimation module for a vehicle stability enhancement control system includes a side-slip acceleration estimation module that determines an estimated side-slip acceleration of a vehicle. A limited-frequency integrator integrates the estimated side-slip acceleration to determine an estimated side-slip velocity of the vehicle. A reset logic module clears an output of the limited-frequency integrator when a first condition occurs. The first condition is one of a straight-driving condition, a speed condition, and a sensor bias condition. The estimated side-slip velocity is compared to a desired side-slip velocity to produce a side-slip control signal. The side-slip control signal is combined with a yaw rate control signal to produce an actuator control signal. The actuator control signal is received by one of at least one brake actuator and a rear-wheel steering actuator to create a yaw moment to correct a dynamic behavior of the vehicle.
22 Citations
25 Claims
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1. (Canceled)
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3. A side-slip velocity estimation module for a vehicle stability enhancement control system, comprising:
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a side-slip acceleration estimation module that determines an estimated side-slip acceleration of a vehicle;
a limited-frequency integrator that integrates said estimated side-slip acceleration to determine an estimated side-slip velocity of said vehicle; and
a reset logic module that clears an output of said limited-frequency integrator when a first condition occurs. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A side-slip velocity estimation module for a vehicle stability enhancement control system, comprising:
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a side-slip acceleration estimation module that determines an estimated side-slip acceleration of a vehicle; and
a limited-frequency integrator that integrates said estimated side-slip acceleration to determine an estimated side-slip velocity of said vehicle, wherein said estimated side-slip velocity is compared to a desired side-slip velocity to produce a side-slip control signal, said side-slip control signal is combined with a yaw rate control signal to Produce an actuator control signal, and said actuator control signal is received by a rear-wheel steering actuator that turns a set of rear wheels of said vehicle to create a yaw moment to correct a dynamic behavior of said vehicle.
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13. (Canceled)
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15. A method of side-slip velocity estimation for a vehicle stability enhancement control system, comprising:
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determining an estimated side-slip acceleration of a vehicle;
integrating said estimated side-slip acceleration to determine an estimated side-slip velocity of said vehicle, wherein said estimated side-slip acceleration is integrated with a limited-frequency integrator; and
clearing an output of said limited-frequency integrator when a first condition occurs. - View Dependent Claims (14, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of side-slip velocity estimation for a vehicle stability enhancement control system, comprising:
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determining an estimated side-slip acceleration of a vehicle;
integrating said estimated side-slip acceleration to determine an estimated side-slip velocity of said vehicle, wherein said estimated side-slip acceleration is integrated with a limited-frequency integrator;
comparing said estimated side-slip velocity to a desired side-slip velocity to produce a side-slip control signal;
combining said side-slip control signal with a yaw-rate control signal to produce an actuator control signal;
transmitting said actuator control signal to a rear-wheel steering actuator; and
turning a set of rear wheels of said vehicle to create a yaw moment to correct a dynamic behavior of said vehicle.
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25. A method of side-slip velocity estimation for a vehicle stability enhancement control system, comprising:
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determining an estimated side-slip acceleration of a vehicle based on a yaw rate, a lateral acceleration, and a speed of said vehicle;
integrating said estimated side-slip acceleration to determine an estimated side-slip velocity of said vehicle, wherein said estimated side-slip acceleration is integrated with a limited-frequency integrator; and
clearing an output of said limited-frequency integrator when a first condition occurs, wherein said first condition is at least one of a straight-driving condition, a speed condition, and a sensor bias condition.
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Specification