| 摘要 |
A device for controlling the steering effort of a vehicle is provided to enhance the steering stability during cornering of the vehicle while reducing discomfort to a driver by a control unit comparing a measured yaw rate to a reference yaw rate and calculating an appropriate steering reactive force control value. A device for controlling the steering effort of a vehicle comprises a vehicle data generating unit, a steering force computing unit, a steering force generating unit, and a control unit(7). The vehicle data generating unit includes a vehicle speed measuring unit for measuring the speed of a vehicle(Vr) in motion, a yaw measuring unit(6) for measuring the yaw in the vehicle in motion, and a steering angle measuring unit(2) for generating the data depending on steering of a driver. The steering force computing unit uses the vehicle speed and steering angle from the vehicle data generating unit to compute a reference yaw rate of a reference model vehicle and compares the standard yaw rate with the measured yaw rate, and calculates the optimal steering force of a steering wheel(1). The steering force generating unit, depending on the control value from the steering force computing unit, exerts a regulating force that overrides or accommodates the steering force of the driver. The control unit includes a reference vehicle model module for calculating the reference yaw rate using parts of data from the steering force computing unit, an excessive steering discerning module comparing the reference yaw rate from the reference vehicle model module with the measured yaw rate from the vehicle in motion and discerning whether the steering force of the drier is excessive or not, and a steering force overriding force computing module for calculating the control value for preventing the steering force of the driver from jeopardizing the steering stability using the data from the excessive steering discerning module.
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