Engine hardware-in-the-loop test method and system

Abstract

The invention discloses an engine hardware-in-the-loop test method and system. The method comprises the steps that a real-time processor receives a simulation test instruction carrying simulation model setting parameters, a real-time simulation composite model is adopted to simulate engine test working conditions corresponding to the simulation model setting parameters, engine measurement signals are obtained, and the engine measurement signals are sent to an engine control unit, the real-time simulation composite model comprises a subsystem simulation Gaussian model and a subsystem simulation mean value model; the engine control unit receives the engine measurement signal, processes the engine measurement signal by adopting a to-be-tested control program to obtain a target control signal, and sends the target control signal to the real-time processor; and the real-time processor receives the target control signal, adjusts the model operation state according to the target control signal by adopting the real-time simulation composite model, and obtains a simulation test operation result. According to the method, in the testing process, the simulation calculation precision is considered, and the real-time performance is guaranteed.

Description

technical field [0001] The invention relates to the technical field of engine testing, in particular to an engine hardware-in-the-loop testing method and system. Background technique [0002] With the development of automotive electronics technology, the number and functions of controllers in automobiles and powertrain systems continue to increase, resulting in a sudden increase in the testing tasks and calibration tasks of the control program in the Engine Control Unit (Engine Control Unit, referred to as ECU). At present, the calibration of ECU is carried out after the development of the whole vehicle and prototype is completed, which forms a sharp contradiction with the requirements of enterprises to shorten the development cycle and reduce development costs. [0003] Hardware-in-the-loop simulation can simulate various operating conditions of physical vehicles to replace engineering tests, and can also provide simulation tests for dangerous and extreme conditions that ma...

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides an engine hardware-in-the-loop test method and system to solve the problem that the current engine hardware-in-the-loop test cannot take into account the accuracy and real-time performance

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