Design and construction analysis of self - synchronous riddle 自同步直线振动筛的设计与结构分析
Electromechanical - coupling mechanism of self - synchronous vibrating system with three - motor - driving 三电机激振自同步振动系统的机电耦合机理
Furthermore , this dissertation also gives a comprehensive analysis and comparison to the torque ripple factor , torque - current ratio and other aspects for pseudo - sinusoidal emf bldcm drived by 120 conduction mode , 180 conduction mode and self - synchronous svpwm mode respectively . the simulation and the experimental results indicate that self - synchronous svpwm method is more effective for minimizing the torque ripple without any expense of the torque - current ratio when the crest width of the back - emf waveform is less than 107 electrical angles 对准正弦波反电动势无刷直流电动机在120导通方式、 180导通方式和自同步svpwm三种控制方式下的转矩脉动系数、转矩电流比等方面进行了全面的分析与比较,仿真研究和实验结果表明,当反电动势的平顶宽度小于107电角时,采用自同步svpwm控制方法可以在不损失转矩电流比的基础上,更有效地抑制电磁转矩脉动。
Based on the traditional model of vibrat ory machines , an electrome chanical - coupled model of motor - vibrator y machine system is established , and a reasonable quantitative expla ining of engineering phenomena in transi ent processes is given by digital simula tion according to it . the , mechanism of self - synchronous vibration , and vibratory synchronization transmissi on is proposed in this paper 本文对此进行了专门的研究,在传统的振动机械模型基础上建立了电机-振动机械系统的机电耦合模型,利用该模型进行数值模拟对过渡过程中的一系列实际现象做出了合理的定量解释,揭示了自同步振动和振动同步传动的机电耦合机理。