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永磁直线同步电机磁阻力优化的设计 总被引:1,自引:0,他引:1
The detent force of a permanent magnet linear synchronous motor (PMLSM) is analyzed and the corresponding optimization methods are presented to reduce it. The detent force, which is divided into two components, i.e. resulting from the end effect and resulting from the slotting effect, can be analyzed respectively by the finite element method (FEM). To reduce the detent force arising from the end effect, several optimal design techniques are utilized, namely, adopting the suitable length and end shape of the primary armature. The detent force resulting from the slotting effect is reduced by means of skewing and adjusting the width of the magnets mounted on the secondary armature, and adopting the fractional slots of the primary armature. The validity of the analytical detent force predictions and the effectiveness of the detent force reduction techniques are verified by the experimental measurements. 相似文献
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《威尼斯的小艇》教材分析与教学建议□凤城市教师进修学校艾武《威尼斯的小艇》是义务教育小学语文第九册第三组教材的一篇讲读课文。是美国著名作家马克·吐温的一篇状物记叙文。课文通过介绍威尼斯小艇是什么样儿的,船夫如何驾驶小艇在水中行驶以及小艇在威尼斯的重要... 相似文献
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(讲读第一自然段) 师:这一自然段,是个长句子。它告诉我们什么? 生:李时珍是明朝的一位伟大的医学家和药物学家。他是湖北省蕲(qi)春人。 (讲读第二、三自然段) 相似文献
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