Steering control mechanisms for an electric vehicle

摘要

The present disclosure is directed to a steering system for an electric vehicle. The steering system may include a hydraulic pump configured to direct hydraulic fluid to a steering gearbox of the electric vehicle, and an electric motor having a shaft that is coupled to the hydraulic pump. The electric motor may be configured to drive fluid flow through the pump. The steering system may also include a sensor configured to measure a value indicative of a torque applied by the electric motor, and a control unit configured to control operation of the electric motor based on an input from the sensor.

主权项

1. A steering system for an electric vehicle, comprising:
a hydraulic pump configured to direct hydraulic fluid to a steering gearbox of the electric vehicle; an electric motor having a shaft that is coupled to the hydraulic pump, the electric motor configured to drive fluid flow through the pump; a sensor configured to measure a value indicative of a torque applied by the electric motor; and a control unit configured to control operation of the electric motor based on an input from the sensor, wherein the control unit is configured to:
increase a speed of the electric motor when a torque indicated by the sensor is greater than a first torque threshold;increase the speed of the electric motor when a torque indicated by the sensor is greater than a second torque threshold for a first threshold amount of time, wherein the second torque threshold is lower than the first torque threshold; andincrease the speed of the electric motor when a torque indicated by the sensor is greater than a third torque threshold for a second threshold amount of time, wherein the third torque threshold is lower than the second torque threshold, wherein the second threshold amount of time is longer than the first threshold amount of time.