Using the estimated speed as feedback signal, we have accomplished the sensorless control of a DC motor.

同时利用观测器之估测转速当成回授讯号，达到无测速计直流马达的速度控制。

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At the same time, the influence on precision of estimated speed is also analyzed when the rotor resistance changes.

同时，也分析了转子电阻变化对速度辨识精度所产生的影响。

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The experimental results show the estimated speed can trace the actual speed, and the system has stable performance.

实验结果表明，估计转速基本能跟踪实际转速变化，系统性能稳定。

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"In California alone it is estimated that 160,000 construction jobs could be created just to build those two high speed rail corridors."

VOA: standard.2010.02.15

The providers most likely to give callers an estimated speed were Karoo (76%), Sky (72%) and Plusnet (67%).

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The original coupe relied on battery power alone to reach an estimated speed only slightly slower than the C-X75.

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An accident investigator later examined the scene and estimated the speed at point of impact with the tree was between 30mph and 35mph.

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