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开关磁阻电动机微步位置伺服控制系统的研究
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摘要
随着电力电子技术、微处理器技术和电动机技术的发展,满足增量运动的
    电动机传动系统不断出现,运用步进传动理论对这些电动机的传动性能进行分
    析将导出新的增量运动控制系统。
     本文把开关磁阻电动机推广到增量运动控制中,以交流步进传动理论为依
    据,根据开关磁阻电动机自身特点,对开关磁阻电动机位置伺服系统进行理论、
    仿真和实验分析,并对开关磁阻电动机位置伺服系统进行了硬件设计和软件设
    计。同时,考虑到开关磁阻电动机在低速下转矩脉动现象非常严重,本文提出
    了微步控制方法,即通过控制开关磁阻电动机各相绕组电流波形,在定子绕组
    的机械平衡点之间产生电的平衡点。这既有效的抑制转矩脉动,也大大提高了
    位置控制精度。
     利用开关磁阻电动机微步位置伺服控制思想,针对工业过程控制中广泛使
    用的电动执行机构的现状和不足,本文设计出一种新型的开关磁阻电动执行机
    构,理论分析研究表明,该执行器不仅结构简单、运行可靠、性能价格比高,
    而且静态性能和动态性能都大为改善,具有广阔的应用前景。
With the development of technique of power electronic,microprocessor and motor,
     motor drive systems which are satisfied with incremental motion appear incessantly.
     Analyzing these motor drives with step motion theory will yield new incremental
     motion control systems.
     In this paper Switched Reluctance Motor (SRM) is extended to incremental
     motion control. Based on the alternative step motion theory and the characteristics of
     SRM, a new kind of SRM for position servo system is proposed. Detailed theoretical
     and simulating analyses are also presented. At the same time, the software and
     hardware of SRM position servo system are designed.
     The paper principally alms at the weakness which SRM produces excessive
     vibration and torque ripple in low speed area. Then a novel micro-step control
     strategy is presented. This method can not only reduce the torque ripple of SRM but
     also increase position control precision.
     According to position servo control of SRM, a new kind of SRM electrical
     actuator is developed successfully. Theoretical analysis results have shown that the
     new electrical actuator has simple structure and excellent performance.
引文
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