abbr.Department of Industry;Trade and Commerce <加>工业、贸易和商业部
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The thesis researched the method of improving switched reluctance motor ’ s torque performance from the control point of view.The most serious torque ripple happens in commutation areas . In this paper , the torque characteristic of SRM was analyzed firstly , then the theory of Direct Instantaneous Torque Control ( DITC ) method was introduced . According to its commutation strategy , the toque controller of DITC method was designed , adopting a kind of double hysteresis loops to adjust torque .
It was simple and easy to couple , obtaining accurate results . The average attachment yield of protein and peptide samples to the DITC PVDF membrane was 78.19 % , the repetitive yield for Edman degradation of the DITC PVDF membrane was 90.27 % . The analyzed amino acid sequences tallied with the known ones .
The significant therapeutic effects of DITC on the3 animal models were shown .
达卡巴嗪对3种模型均有明显的治疗作用。
Reversible Drive System of SRM based on DITC
基于DITC的开关磁阻电动机可逆控制系统
Simulation results showed that the DITC method could limit torque wave in the hysteresis loop strictly under any conduction angles , and improve switched reluctance motor ’ s dynamic and steady torque performance effectively .
The whole system ’ s work procedure was divided into two parts , startup and speed adjusting under DITC . PI speed adjusting method with integral separation could reduce speed overshoot effectively . Each program section ’ s thought and flow chart was explained .