理论分析和实验表明：提出的方法与霍尔传感器一样能保证无刷直流电机快速大转矩、小抖动、无堵转的平滑启动。
Theoretical analysis and experimental results show that the method has the effect as same as Hall sensor in the event that ensure the DC motor start-up quickly and microseism, and no locked rotor.
直流电机因具有良好的启动、平滑的调速等性能，使其在各领域得到广泛的运用。
Owing to its good starting-up and smooth speed regulation performances, the DC motor is so widely used in various fields.
对于交流双速电梯，府串联启动阻抗启动并公道调整切除阻抗的时间，保证加速过程平滑过渡。
For the AC double speed elevator, the government series starting impedance is started and the time of the impedance is adjusted to ensure the smooth transition of the acceleration process.
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