In-loop testing experiment method of automobile brake hardware

Abstract

The invention discloses an in-loop testing experiment method of automobile brake hardware. The in-loop testing experiment method comprises the following steps: I, establishing overall automobile dynamics models through a host computer, wherein the overall automobile dynamics models include a tire model, an automobile body model, a brake model and a transition model, inputting simulation parameters, and downloading the simulation parameters to a target computer through RTW encoding; II, starting the target computer, and controlling a motor according to the set parameters to load a total valve, thereby enabling a brake system to work; III, acquiring output force of a left front brake air chamber, a right front brake air chamber, a left rear brake air chamber and a right rear brake air chamber through a data acquisition unit by using a sensor, transmitting the output force to the simulation models for calculation, thereby obtaining a result, transmitting a stopping signal to the motor after the brake is completed, and stopping loading of the motor to release the brake system. The in-loop testing experiment method is an experiment method for automobile brake property evaluation, brake property of different automobile types under different road conditions can be simulated according to different given parameters, the development period is shortened, and evaluation can be rapidly made according to new requirements.

Description

technical field [0001] The invention belongs to an automobile brake modeling simulation test method, in particular to an automobile brake hardware-in-the-loop test method. Background technique [0002] The braking performance of a car is the main index to characterize the driving safety of a car. The research on braking performance generally adopts two methods: real vehicle test method and modeling simulation. Although the traditional pure numerical simulation is simple and efficient, the control effect is not intuitive enough, and the simulation environment is too idealized to truly reflect the complex actual situation; Although physical experiments are intuitive and real, they are risky, costly, and long-term, and are easily restricted by weather and the environment. Contents of the invention [0003] Purpose of the present invention: the present invention provides a method for automotive brake hardware-in-the-loop testing. Its biggest advantage is that it can embed the...

AI Technical Summary

Problems solved by technology

The research on braking performance generally adopts two methods: real vehicle test method and modeling simulation. Although the traditional pure numerical simulation is simple and efficient, the control effect is not intuitive enough, and the simulation environment is too idealized to truly reflect the complex actual situation; Although the physical test is intuitive and real, it has high risk, high cost and long cycle, and is easily restricted by weather and environment.

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