Hybrid Control of Induction Motors via Sampled Closed Representations
Hybrid Control of Induction Motors via Sampled Closed Representations
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DOI：
10.1109/tie.2008.928117
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发表时间：
2008-07
影响因子：
7.7
通讯作者：
B. Castillo‐Toledo;S. Gennaro;A. Loukianov;J. Rivera
中科院分区：
文献类型：
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作者：
B. Castillo‐Toledo;S. Gennaro;A. Loukianov;J. Rivera
本文提出了一种用于感应电机的控制器。首先应用连续反馈得到闭合形式的离散时间模型。然后，在这些精确采样动态的基础上，利用滑模技术，确定了保证速度和磁链模数参考跟踪的离散时间控制器。因此，在包含连续和离散时间项的意义上，所得到的控制器是混合的。它展示了如何使用所谓的指数保持器和模拟积分器一起实现这种混合控制器。指数保持器是唯一可以模拟实现的器件。此外，还设计了一种离散时间降维观测器来估计转子磁链和负载转矩。最后，通过仿真和实验测试，研究了该控制器的性能。
In this paper, a controller for induction motors is proposed. A continuous feedback is first applied to obtain a discrete-time model in closed form. Then, on the basis of these exact sampled dynamics, a discrete-time controller ensuring speed and flux modulus reference tracking is determined, making use of the sliding mode technique. The resulting controller is hence hybrid, in the sense that it contains both continuous and discrete-time terms. It is shown how to implement such a hybrid controller using the so-called exponential holder, which is the only device to be implemented analogically, together with an analog integrator. Moreover, a discrete-time reduced-order observer is designed for rotor fluxes and load torque estimation. The performance of the proposed controller is finally studied by simulation and experimental tests.