In-loop simulation platform and simulation method for real time hardware of body electronic stability system

Abstract

The invention discloses an in-loop simulation platform for real time hardware of a body electronic stability system (ESP). A virtual vehicle model and a simulation environment are used for simulating a real vehicle and a driving condition; an industrial personal computer and a PXI real-time system are used for transmitting pressure signals of all wheel cylinders to a CarSim vehicle model during ESP working; a driving state of a vehicle is displayed in real time by animation, thereby realizing development and testing of an ESP controller. Meanwhile, a real vehicle testing effect is realized in a laboratory environment. With the PXI real-time system, the real-time performance of the whole simulation process is guaranteed, so that the simulation precision is improved substantially and application of the virtual testing field to the real-time monitoring testing process is realized. In addition, the invention also disclose an in-loop simulation method for real time hardware of a body electronic stability system.

Description

technical field [0001] The invention relates to the technical field of vehicle simulation tests, in particular to a real-time hardware-in-the-loop simulation platform and a simulation method for an electronic stability system of a vehicle body. Background technique [0002] Electronic stability system (ESP, Electronic Stability Program) is a multifunctional active safety device developed on the basis of anti-lock brake system (ABS) and anti-skid system (ASR). When the vehicle is running, the signals collected by various sensors are sent to the ESP controller through the communication system, and the ESP controller judges the operating conditions of the vehicle in real time according to the collected signals. Stable omen, the controller issues instructions to control the work of the actuator, real-time correction of the driving state of the vehicle, timely eliminate the unstable trend of the vehicle, make the actual state of the vehicle closer to the expected state of motion,...

AI Technical Summary

Problems solved by technology

At present, there is no mass assembly of products with independent intellectual property rights for the domestic ESP system. At this stage, it mainly focuses on academic research, and it is basically based on pure simulation. There is still a long way to go to achieve

[0006] The most effective and intuitive way for ESP product development and performance evaluation is real vehicle road test, but this method is subject to many limitations in practical application

On the one hand, due to complex and changeable factors such as road surface conditions, driving loads, and driving conditions, in order to have a relatively accurate and objective evaluation of the performance of the ESP system, a large number of tests must be carried out for different working conditions, and a special test site is required. And the test environment requires extremely high cost and a long test period; on the other hand, the real vehicle test is usually carried out under extreme conditions or high-speed obstacle avoidance conditions, and the vehicle is prone to sideslip and deviation, which has great potential In consideration of the driver's personal safety, it is basically not possible to evaluate the performance of ESP through real vehicle tests.

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