| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in an engine tester for simulating a load by using a controller having a vehicle model part and a torque control part, that an unstable phenomenon appears in engine speed when a response is slow in a closed loop of a shaft torque control system relative to a closed loop of the model part. SOLUTION: The engine model part is provided for outputting a model speed signal for an engine, a deviation between the model speed signal and a detected engine speed signal is inputted into the controller, and its output and a load torque command value from the vehicle model part are added together and outputted to the engine model part. The engine model part is structured to generate the model speed signal based on the inputted signal and to output it to the vehicle model part, thereby improving the closed loop characteristics of the entirety including the vehicle model part. COPYRIGHT: (C)2004,JPO
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