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Smooth running and rapid response are the desired performance goals for the transient motions of servo mechanisms. Because of the uncertain and unobservable transient behaviour of servo mechanisms, it is difficult to evaluate their transient performance. Under the effects of electromechanical coupling, the stator current signals of a permanent-magnet synchronous motor (PMSM) potentially contain the...
Due to the enclosed construction and real-time servo control, it is difficult to detect and evaluate the running state of numerical control (NC) machine feed mechanism. In this paper, the motor torque, which is provided by open NCs, is used to analyze the operating performance of feed mechanism. The torque data is divided into segments in different feed condition and piecewise resolved into long-term...
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