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Nonlinear control of induction motors: torque tracking with unknown load disturbance

机译:感应电动机的非线性控制:未知负载干扰下的转矩跟踪

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摘要

Ortega and Espinosa (1993) presented a globally stable controller for torque regulation of a complete induction motor model with partial state feedback, i.e., no assumption of flux measurement. The result was established under the assumptions that both the desired and load torques are constant, that the former does not exceed certain bounds which depend on the systems natural damping, and that the motor parameters are known. In the present contributions the authors extend these results in several directions. First, by "adding mechanical damping" to the closed-loop system the authors relax the upper bound condition on the desired torque. Second, the authors use a new controller structure that allows them to treat the case of time-varying desired torque. Finally, a new estimator is proposed to handle time-varying (linearly parameterized) unknown loads.
机译:Ortega和Espinosa(1993)提出了一种全局稳定的控制器,用于对带有部分状态反馈的完整感应电动机模型进行转矩调节,即无需假设磁通量。该结果是基于以下假设得出的:期望转矩和负载转矩都是恒定的,前者未超过取决于系统自然阻尼的特定范围,并且电动机参数已知。在本论文中,作者将这些结果扩展到几个方向。首先,通过向闭环系统“添加机械阻尼”,作者放松了所需扭矩的上限条件。其次,作者使用了一种新的控制器结构,该结构允许他们处理随时间变化的所需转矩的情况。最后,提出了一种新的估计器来处理时变(线性参数化)未知负载。

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