A nonlinear third-order extended state observer (TESO) is proposed for the rotor position and speed estimation for sensorless interior permanent magnet synchronous motor drives. The disturbance observation bandwidth of the proposed observer is expanded by deploying a gain optimization method. The measurement noise excited in the control loop is suppressed effectively by substituting the previous high gain configuration. Experimentally, both the steady-state and transient performance of the TESO are verified on testing rigs. In comparison with the performance of a conventional linear extended state observer, the TESO has a better capability of disturbance observation and noise suppression in a wide operating range.

中文翻译：

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具有优化增益的无传感器 IPMSM 驱动器的非线性扩展状态观测器

提出了一种非线性三阶扩展状态观测器 (TESO)，用于无传感器内部永磁同步电机驱动器的转子位置和速度估计。通过部署增益优化方法扩展了所提出的观测器的干扰观测带宽。通过替代之前的高增益配置，可以有效抑制控制回路中激发的测量噪声。通过实验，TESO 的稳态和瞬态性能都在测试台上得到了验证。与传统线性扩展状态观测器的性能相比，TESO在较宽的工作范围内具有更好的扰动观测和噪声抑制能力。