In-loop real-time simulation test system for suspension component

Abstract

The invention relates to a performance test system for a vehicle suspension component and specifically relates to an in-loop real-time simulation test system for a suspension component. The system comprises a real-time dynamical model for a vehicle, an in-loop real-time simulation test control system for a suspension component and a real object test bench for a suspension component, wherein the in-loop real-time simulation test control system for a suspension component is used for realizing communication connection between and control on the real-time dynamical model for a vehicle and the real object test bench for a suspension component. A real-time simulation test is conducted through closed-loop connection of a real object of the suspension component and the real-time dynamical model for a vehicle. With the system, the problem of whole-vehicle dynamical stimulation of some suspension components which can hardly be accurately modeled is solved to a certain extent. Thus, the test system is of great importance to the study of performance of a suspension component and matching between the suspension component and a whole vehicle.

Description

technical field [0001] The present invention relates to a vehicle suspension component performance testing system, specifically a suspension component-in-the-loop real-time simulation test system, which performs real-time simulation test by performing closed-loop connection between the suspension component object and the vehicle real-time dynamic model . Background technique [0002] In the process of vehicle development, dynamic analysis is an effective means. For some components with simple structure and few influencing factors, dynamic modeling can often achieve satisfactory accuracy. However, for some components with complex structures, many influencing factors, and strong nonlinearity, modeling may encounter great difficulties; if you simply pursue methods to improve model accuracy, on the one hand, the dynamic model of the concerned components will be very complicated, so The solution of the model is extremely slow, which cannot meet the needs of vehicle dynamics sim...

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Problems solved by technology

However, this method also has certain limitations. On the one hand, the test conditions of the suspension components are often different from their real motion conditions. Therefore, the external characteristics of the components tested by the bench test are often different from their real motion conditions. There are large differences in performance; on the other hand, some special suspension components, such as air springs, oil-pneumatic suspensions, hydraulic limit shock absorbers, displacement-related shock absorbers, damping adjustable shock absorbers, etc., these suspensions There are many factors affecting the performance of components, and many of them are equipped with control units. Therefore, the performance of these components is difficult to test their external characteristics through bench tests

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