Scholarlink

<p>This paper introduces a novel speed control method for permanent magnet synchronous motors (PMSMs) that integrates current and speed control. In the speed control component, a new controller based on the H∞ state feedback concept generates the reference q-axis stator current. This structure employs H∞ performance in order to enhance speed tracking accuracy and prevent chattering, which is a characteristic phenomenon in sliding mode controllers (SMCs). To further increase the control robustness, an H∞ unknown input load torque observer is used. Load torque can be accurately estimated by reducing the influence of uncertainties on error estimation using this observer, thereby allowing dynamic control of the reference current with stable performance across changing loads. The reference current is used in the current control block, calculating voltages required for the PMSM through the dq axis, where it uses a proportional-derivative structure. The proposed method enhances the efficiency and reliability of PMSM speed control. Experimental validation confirms the superiority of the new solution to traditional SMC techniques.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The combination of H∞ unknown input observer and H∞ state feedback controller for the speed control of a permanent magnet synchronous motor

  • 期刊论文

  • 发表日期：

    2025年5月21日

查看全文
  • Jinhua Guan

摘要

This paper introduces a novel speed control method for permanent magnet synchronous motors (PMSMs) that integrates current and speed control. In the speed control component, a new controller based on the H∞ state feedback concept generates the reference q-axis stator current. This structure employs H∞ performance in order to enhance speed tracking accuracy and prevent chattering, which is a characteristic phenomenon in sliding mode controllers (SMCs). To further increase the control robustness, an H∞ unknown input load torque observer is used. Load torque can be accurately estimated by reducing the influence of uncertainties on error estimation using this observer, thereby allowing dynamic control of the reference current with stable performance across changing loads. The reference current is used in the current control block, calculating voltages required for the PMSM through the dq axis, where it uses a proportional-derivative structure. The proposed method enhances the efficiency and reliability of PMSM speed control. Experimental validation confirms the superiority of the new solution to traditional SMC techniques.