JPS6418779A - Controlling method for power steering equipment - Google Patents

Abstract

PURPOSE:To moderate the delay of the auxiliary steering force control in following quick steering action in an equipment wherein the auxiliary steering force is controlled according to the detected steering angle by adding specified supplementary angle to the detected steering angle to advance the steering action when quick steering is detected. CONSTITUTION:There are provided both a steering wheel angle sensor 1 and a car speed sensor 2, which send their output signals to a controller 4. At the regular steering time including no quick steering action detected, said controller 4 generates the output depending on both the measured car speed and measured steering angle according to the specified output characteristics stored in the pattern memory of a micro-computer. Based on the generated output, the power supplied to a solenoid valve 3 controlling the oil pressure transmitted to a oil pressure reaction chamber is controlled, whereby determining the auxiliary steering force. On the other hand, when a quick steering action is detected, the specified supplementary steering angle is added to the measured steering angle to advance the steering action and then similarly, the power supplied to the solenoid valve 3 is controlled, whereby determining the auxiliary steering force.