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This paper implements nonlinear robust control for the asynchronous motor with iron loss, derives and establishes the efficiency model for asynchronous motor with controllable power loss, and put forward to realize the accurate linearization of model with controllable power loss and high-precision tracking and control of speed and flux linkage of rotor through the state feedback precise linearization algorithm of MIMO system.The output of affine nonlinear system is tracked and controlled through the design of nonlinear robust controller. The simulation results show that with this control method energy saving control of asynchronous motor can be realized indirectly, so that the average power loss of the asynchronous motor significantly increases from 47.63% to 72.89%. This provides a reference for the design of controller of multiple input multiple output nonlinear mechanical and electrical system in the engineering.

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