Method and apparatus for vehicle stability enhancement system
AssigneeGeneral Motors Corporation
InventorsWilliam C. Lin, Shih-Ken Chen
Life of this patent
Estimating the term…
Abstract
A vehicle stability enhancement system for a vehicle having a vehicle subsystem includes a sensor for sensing a vehicle parameter, a vehicle control system for adjusting the vehicle subsystem, a memory having a register that includes a bank angle compensation control command, and a controller responsive to the sensor and the memory for controlling the vehicle control system.
Claims16
A vehicle stability enhancement system for a vehicle having a vehicle subsystem, comprising:
- a sensor for sensing a vehicle parameter;
- a vehicle control system for adjusting the vehicle subsystem;
- a memory comprising a first register including a bank angle compensation control command, a second register including a yaw rate control command, and a third register including a side-slip rate control command;
- and
- a controller responsive to said sensor and said memory for controlling said vehicle control system;
- wherein said memory further comprises a fourth register including a feedforward control command, said feedforward control command being determined by a rear wheel steering angle.
A vehicle stability enhancement system for a vehicle having a vehicle subsystem, comprising:
- a sensor for sensing a vehicle parameter;
- a vehicle control system for adjusting the vehicle subsystem;
- a memory comprising a register including a bank angle compensation control command;
- and
- a controller responsive to said sensor and said memory for controlling said vehicle control system;
- wherein said memory further comprises a register having a side-slip rate control gain responsive to a road surface having a bank angle, wherein said side-slip rate control gain is a function of a second side-slip rate control gain responsive to a level road surface.
A method for controlling a vehicle stability enhancement system in a vehicle having a vehicle subsystem, comprising:
- sensing a vehicle parameter;
- determining a control gain factor in response to the vehicle parameter;
- determining the state of a control flag in response to the vehicle parameter;
- calculating a control command in response to the control gain factor and the control flag, wherein the control command comprises a bank angle compensation control command, a yaw rate control command, and a side-slip rate control command;
- and
- actuating a vehicle control system in response to the control command for adjusting the vehicle subsystem;
- wherein said calculating a control command further comprises:
- calculating a control command comprising a feedforward control command, the feedforward control command being determined by a rear wheel steering angle.
A method for controlling a vehicle stability enhancement system in a vehicle having a vehicle subsystem, comprising:
- sensing a vehicle parameter;
- determining a control gain factor in response to the vehicle parameter;
- determining the state of a control flag in response to the vehicle parameter;
- calculating a control command in response to the control gain factor and the control flag, wherein the control command comprises a bank angle compensation control command;
- and
- actuating a vehicle control system in response to the control command for adjusting the vehicle subsystem;
- wherein said determining a control gain factor further comprises;
- determining a first side-slip rate control gain factor for a level surface;
- calculating a bank angle compensation control gain factor;
- and
- calculating a second side-slip rate control gain factor for a surface having a bank angle, wherein said second side-slip rate control gain factor is responsive to the first side-slip rate control gain factor and the bank angle compensation control gain factor.
Dependencies are inferred from the claim text.