Abstract
In the development and test of engine ECU, HIL is used widely .ECU needs a lot of drive signals in order to ensure HIL can work normally. Mixing programme based virtual instrument technology and Matlab / Simulink model realized engine signal simulation to provide drive signals for ECU. Meanwhile, NI PXI boards which output analog signal were used as hardware devices in the paper and LabVIEW software were adopted to drive boards and process analog signal, achieving accurate simulating signal on engine excitation signal. The results for test show that the system is able to simulate exciting signal for the engine ECU accurately, provides a low-cost, low pollution, high efficiency way to test and develop engine and its ECU and increase security and reliability of test system.
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