Hardware-in-the-loop experimental platform of electric control air suspension vehicle height adjusting system and adjusting method

Abstract

The invention discloses a hardware-in-the-loop experimental platform of an electric control air suspension vehicle height adjusting system and an adjusting method. The hardware-in-the-loop experimental platform comprises a vehicle body, a measurement and control system and a drum test bench, wherein the vehicle body comprises an air compressor, an inflation electromagnetic valve, a plurality of air springs and a deflation electromagnetic valve which are connected in sequence; and the measurement and control system comprises a height sensor, a data acquisition card, a host machine and a targetmachine. A test method of the hardware-in-the-loop experimental platform based on the vehicle height adjusting system comprises vehicle height static control and vehicle height dynamic control, a hostmachine and target machine dual-machine simulation environment is set, a target height is formulated, the vehicle height static control utilizes the height sensor to acquire the current vehicle height, a signal enters a vehicle height control model along with the data acquisition card, a vehicle height control unit controls the on and off of the electromagnetic valves through decision-making whenthe height of a vehicle body changes, so that the height of the vehicle body is recovered, the vehicle height dynamic control simulates a road surface by means of the drum test bench and inputs a height control command by means of a monitoring interface of the host machine, thereby realizing hardware-in-the-loop simulation testing.

Description

technical field [0001] The invention relates to the field of vehicle control, in particular to a hardware-in-the-loop experiment platform and a test method for vehicle height adjustment based on an electronically controlled air suspension. Background technique [0002] The electronically controlled air suspension can adjust the body height according to the different driving conditions of the car. When the vehicle is driving at high speed, the center of gravity of the chassis can be lowered by lowering the body height to improve driving stability; when the vehicle is driving at low speed on rough roads At this time, by raising the height of the vehicle body, the trafficability of the vehicle is improved, and the probability of the suspension hitting the limit block is reduced. In addition, changes in the vehicle's on-board mass can also cause the ride height to deviate from the ideal ride height. When the electronically controlled air suspension needs to inflate and deflate ...

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: The present invention provides a hardware-in-the-loop experimental platform and adjustment method based on electronically controlled air suspension vehicle height adjustment. The platform and method solve the problem that simulation results in the prior art largely depend on the accuracy of mathematical models , Can not effectively reflect the real road environment

Images