Precision Control and Guide Teaching and Research Section

Fengcheng, China

Precision Control and Guide Teaching and Research Section

Fengcheng, China
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Li S.-Q.,Precision Control and Guide Teaching and Research Section | Zhang S.-X.,Precision Control and Guide Teaching and Research Section | Zhou Z.-Q.,Precision Control and Guide Teaching and Research Section | Ma C.-B.,Precision Control and Guide Teaching and Research Section
Reneng Dongli Gongcheng/Journal of Engineering for Thermal Energy and Power | Year: 2011

In the light of an error accumulation problem of the LPV (linear parameter varying) model, an improved LPV model was put forward. On the basis of a nonlinear model for a turbofan engine, a LPV model for the turbofan engine was established with its LP rotor rotating speed serving as a scheduling variable. A rotating speed-oil supply quantity feedback was added to the model in question. Together with a PI link, a closed loop circuit was formed, achieving an improvement of the LPV model. The simulation results show that the improved LPV model in question can effectively overcome the error accumulation defect of the LPV model, thus more realistically reflecting the steady and dynamic state characteristics of nonlinear models.

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