The delay effect caused by the switching device is not considered in traditional methods of induction motor flux observation. However, ignoring the delay effect causes the mathematical model of the induction motor flux observation to be inaccurate. In actual work, this disadvantage will affect the flux observation of the induction motor. It will also influence the anti-load performance of the motor and even lead to system instability. Especially at low switching frequencies, switch delay causes input delay. Input delay will result in configuration poles deviating from their expected position in the closed-loop control, affecting the induction motor performance. In this study, the induction motor time-delay model is established to modify the model and solve the above problem. Spectral decomposition theory is used to establish the induction motor flux observer, which configures the unstable poles of the system. The poles that deviate from their expected position are also reconfigured to the desired position, which improves the motor performance and the observing accuracy of the flux chain. Finally, the process of proving the stability of the spectral decomposition flux observer (SDFO) is provided. The reliability of the SDFO is proven through specific simulations and experiments.

在传统的感应电动机磁通观测方法中，并未考虑由开关装置引起的延迟效应。但是，忽略延迟效应会导致感应电动机磁通观测的数学模型不准确。在实际工作中，此缺点将影响感应电动机的磁通量观测。它还会影响电机的抗负载性能，甚至导致系统不稳定。特别是在低开关频率下，开关延迟会导致输入延迟。输入延迟将导致配置极在闭环控制中偏离其预期位置，从而影响感应电动机的性能。在本研究中，建立感应电动机延时模型以修改模型并解决上述问题。频谱分解理论用于建立感应电动机通量观测器，该观测器配置了系统的不稳定极点。偏离其预期位置的磁极也被重新配置到所需位置，从而改善了电机性能和磁链的观测精度。最后，提供了证明光谱分解通量观测器（SDFO）稳定性的过程。SDFO的可靠性已通过特定的仿真和实验证明。提供了证明光谱分解通量观测器（SDFO）稳定性的过程。SDFO的可靠性已通过特定的仿真和实验证明。提供了证明光谱分解通量观测器（SDFO）稳定性的过程。SDFO的可靠性已通过特定的仿真和实验证明。