Collision avoidance control integrated with electric power steering controller and rear steer
First Claim
1. A method of providing automatic collision avoidance in a vehicle with a front wheel electric power steering (EPS) system and rear wheel active rear steering (ARS) system, the method comprising:
- generating, using a processor, a vehicle math model including control variables;
designing a steering control goal as a criterion to determine the control variables;
implementing a model predictive control to solve the steering control goal and determine the control variables; and
providing the control variables to the EPS system and the ARS system to respectively control a front actuator associated with front wheels and a rear actuator associated with rear wheels, wherein the generating the vehicle math model includes generating a six-dimensional model with a one-track bicycle model for four dimensions of the six-dimensional model and a one degree-of-freedom steering column model for two dimensions of the six-dimensional model.
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Abstract
A method of providing automatic collision avoidance in a vehicle with a front wheel electric power steering (EPS) system and rear wheel active rear steering (ARS) system and an automatic collision avoidance system are described. The method includes generating a vehicle math model including the control variables, designing a steering control goal as a criterion to determine the control variables, and implementing a model predictive control to solve the steering control goal and determine the control variables. The method also includes providing the control variables to the EPS system and the ARS system to respectively control a front actuator associated with front wheels and a rear actuator associated with rear wheels.
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Citations
14 Claims
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1. A method of providing automatic collision avoidance in a vehicle with a front wheel electric power steering (EPS) system and rear wheel active rear steering (ARS) system, the method comprising:
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generating, using a processor, a vehicle math model including control variables; designing a steering control goal as a criterion to determine the control variables; implementing a model predictive control to solve the steering control goal and determine the control variables; and providing the control variables to the EPS system and the ARS system to respectively control a front actuator associated with front wheels and a rear actuator associated with rear wheels, wherein the generating the vehicle math model includes generating a six-dimensional model with a one-track bicycle model for four dimensions of the six-dimensional model and a one degree-of-freedom steering column model for two dimensions of the six-dimensional model. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An automatic collision avoidance system in a vehicle with a front wheel electric power steering (EPS) system and active rear steering (ARS) system, the system comprising:
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a memory device configured to store parameters corresponding with different types of front and rear actuators associated with different types of vehicles; and a processor configured to generate a vehicle math model including control variables, design a steering control goal as a criterion to determine the control variables, implement a model predictive control to solve the steering control goal and determine the control variables, and provide the control variables to the EPS system and the ARS system to respectively control a front actuator associated with front wheels and a rear actuator associated with rear wheels, wherein the processor generates the vehicle math model as a six-dimensional model with a one-track bicycle model for four dimensions of the six-dimensional model and a one degree-of-freedom steering column model for two dimensions of the six-dimensional model, and the processor selects tuning parameters among the stored parameters in the memory device corresponding with the front actuator and the rear actuator of the type of the vehicle to design and to solve the steering control goal. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification