A new energy commercial vehicle integrated auxiliary drive system cooperative control strategy method

Abstract

This invention discloses a collaborative control strategy method for an integrated auxiliary drive system of new energy commercial vehicles. The system includes a motor, a controller, a steering pump, a brake air compressor, and an electromagnetic clutch. The motor has a double-extended shaft, one end of which is connected to the steering pump, and the other end is connected to the brake air compressor via the electromagnetic clutch. The method includes: a self-test step; a data acquisition step, which collects signals such as vehicle speed, air pressure, and oil temperature in real time; a decision-making step, which adjusts the motor speed based on linear interpolation according to the vehicle speed, performs gradient compensation when the oil temperature is below -10℃, controls the start and stop of the electromagnetic clutch according to the air pressure threshold, and forces exhaust when the air pumping cycle reaches 5 times; an execution step; and a fault-tolerant step, including hard-wired backup of the air pressure sensor, power reduction and shutdown protection for the motor over-temperature. This invention achieves the integration of a single motor driving dual loads, and improves the economy, energy efficiency, and reliability of the auxiliary drive system through composite speed regulation and intelligent air pressure management.

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