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首页> 外文期刊>Electric Power Applications, IET >Backstepping direct thrust force control for sensorless PMLSM drive
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Backstepping direct thrust force control for sensorless PMLSM drive

机译：无传感器PMLSM驱动器的BackStepping直推力控制<？显示[AQ =“”ID =“Q1”“？>

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摘要

This study presents an analytic designing approach for the sensorless direct thrust force control (DTFC) of permanent magnet linear synchronous motor (PMLSM). A modified stator flux estimator developed by use of an adaptive mechanism and correction factors is devoted to measuring the stator flux linkage and the mover's position. The parameters of the flux estimator are adjusted in advance through an off-line identification process to increase the accuracy of estimation. Based on the principle of backstepping control, the reference q-axis flux command, which is equivalent to the thrust force command, is first obtained from the Lyapunov functional analysis. Then, the reference d-axis flux command is calculated according to the characteristics of stator flux linkage. The voltage control strategy is constructed to stabilise the global system and ensure the convergence of DTFC. Compared to the conventional direct torque/thrust control, the proposed control scheme can apply the space vector modulation to achieve a fixed switching frequency. Consequently, the phenomenon of flux and force ripples inherited from DTFC is improved. The experiment results are provided to validate the proposed control approach. Moreover, a recent work that is based on the optimal control is adopted as a comparison study.
机译：本研究提出了一种用于永磁线性同步电动机（PMLSM）的无传感器直推力控制（DTFC）的分析设计方法。通过使用自适应机构和校正因子开发的改进的定子磁通估计器用于测量定子磁通连杆和移动台。通过离线识别过程预先调整磁通估计器的参数，以提高估计的准确性。基于BackStepping控制的原理，首先从Lyapunov功能分析中获得相当于推力指令的参考Q轴磁通命令。然后，根据定子通量连杆的特性计算参考D轴通量命令。构建电压控制策略以稳定全球系统并确保DTFC的收敛性。与传统的直接扭矩/推力控制相比，所提出的控制方案可以应用空间矢量调制以实现固定的开关频率。因此，改善了从DTFC遗传的磁通量和力涟漪的现象。提供实验结果以验证所提出的控制方法。此外，最近基于最佳控制的工作被采用作为比较研究。

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