Suspension test bench, hardware-in-the-loop test system and hardware-in-the-loop test method

Abstract

The invention discloses a suspension test bench, a hardware-in-the-loop test system and a test method. The suspension test bench includes an excitation table, a base and a movable table, the base is installed on the excitation table, and the movable table Installed on the base. In the excitation test, the excitation signal is generated by the excitation platform to simulate the road excitation, and the movable platform simulates the suspension system and generates vibration under the action of excitation; in the impact test, the lifting device lifts the movable platform to a certain height and releases it. , to simulate the movement process of the suspension system subjected to instantaneous impact when the tire leaves the ground and then falls back. The signal acquisition system transmits the motion signal to the control system and generates the corresponding control signal. The execution system adjusts the suspension damping according to the control signal. The actual movement of the suspension under two shock conditions has strong versatility, which can effectively reduce the test cost and improve the test accuracy.

Description

technical field [0001] The invention relates to the field of experimental science and technology, in particular to a suspension test bench, a hardware-in-the-loop test system and a hardware-in-the-loop test method. Background technique [0002] Traditional suspension test systems are mostly based on pure software simulation, but various control algorithms often work well in software simulation, but a series of problems will occur in practice, resulting in a far cry from the actual simulation results. The hardware-in-the-loop simulation system is a real-time closed-loop simulation system that embeds the suspension system hardware into the software simulation, which is more realistic and has important practical significance. In addition, compared with actual experiments such as real vehicle tests, hardware-in-the-loop simulation can shorten the product development cycle, reduce the cost of experiments, and realize experimental verification in extreme environments. [0003] In...

AI Technical Summary

Problems solved by technology

The usual suspension system test bench is often complex in structure and difficult to disassemble. In addition, the traditional bench test often only focuses on one of the vibration test or impact test, and lacks the movement conditions of the same suspension system under multiple working conditions. Comprehensive consideration makes the motion analysis of the same suspension system under different working conditions need to build multiple bench test platforms for testing, resulting in complex test structures, high test costs, and long development time

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