Method for verifying engine model in off-line way

Abstract

The invention discloses a method for verifying an engine model in an off-line way. The method comprises that: an execution timing sequence is defined for each control function module according to a practical control requirement of an engine; a metering trigger condition is arranged for the function module; and a control module execution sequence is controlled via arranging a task scheduling state machine, and the task scheduling state machine confirms verification execution sequences of the control modules of the engine according to the execution timing sequences of the control modules of the engine and input and output sequences between the control modules of the engine. The method for verifying the engine model in the off-line way conforms to practical execution codes of all the control modules of the engine so that the engine model can be accurately verified in the off-line way by the method, deviation in results caused by existing methods for verifying the engine model in the off-line way can be avoided, and subsequent design errors can be avoided.

Description

technical field [0001] The invention relates to the field of automotive electronics, in particular to a method for off-line verification of an engine model. Background technique [0002] The use of hardware-in-the-loop testing during the development of automotive controllers can reduce development costs, quickly discover design errors and correct them in a timely manner. During the construction of the hardware-in-the-loop test platform, the accuracy of the engine model is an important guarantee for testing. At present, the off-line test of the engine model is mainly to carry out off-line simulation of the controller model and the engine model, and compare the experimental data to judge whether the engine model is accurate. [0003] At present, the problems with the offline verification engine model method are: [0004] 1. The engine control function is composed of a variety of functional modules. If these functional modules are imported into the general offline simulation ...

AI Technical Summary

Problems solved by technology

[0004] 1. The engine control function is composed of a variety of functional modules. If these functional modules are imported into the general offline simulation tool matlab for operation, the operation of these functional modules is parallel and cannot be adjusted according to the input and output sequence of each control module;

[0005] 2. The execution timing of these functional modules is uncontrollable and can only be consistent with the simulation execution timing of the entire matlab model;

For the sensor signals given by the engine model, function module 1 and function module 2 perform parallel calculations to obtain actuator drive signals, and the sequence cannot be set

Moreover, the execution cycle time of function module 1 and function module 2 is consistent with the simulation step time of the overall model, and cannot be set separately, which is inconsistent with the actual controller code execution, resulting in deviations in verification results and design errors

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