无速度传感器技术的研究是一个很重要的方向。
The study on speed sensorless is an important research field.
无速度传感器技术能够简化调速系统的硬件结构，降低系统的成本，是近年来交流调速领域的研究热点。
The speed sensorless technique which can simply the hardware structure of the variable speed system and reduce the system cost is a very hotspot of current research works.
异步电机无速度传感器矢量控制技术提高了交流传动系统的可靠性，降低了系统的实现成本。
The speed sensorless vector control of induction motor technology enhances the reliability of AC driving system, and reduces the realization cost.
因此，基于无速度传感器的直接转矩控制技术成为目前交流传动的研究热点。
The direct torque control technology based on speed sensorless had become the current researching hotspot of AC drive.
系统采用无环流交-交变频控制方案、应用无速度传感器的矢量控制技术对拖动煤矿主扇风机的感应电动机进行控制。
The system is designed as circulation absent and A-A VF controlled one, in which a responsive motor driving the main ventilation fan is controlled in a vector control technology without speed sensor.
仿真结果表明，所提出的无网侧电动势传感器控制技术具有良好的辨识速度，且辨识精度高，系统鲁棒性强。
Simulation results show that the designed source voltage sensorless control technology has a good recognition rate, and high identification precision, a strong robustness.
带有自动调谐的无速度传感器矢量控制技术提供200%的启动力矩和高级低速力矩控制。
Sensorless vector control with autotuning provides 200 percent starting torque and advanced low-speed torque control.
带有自动调谐的无速度传感器矢量控制技术提供200%的启动力矩和高级低速力矩控制。
Sensorless vector control with autotuning provides 200 percent starting torque and advanced low-speed torque control.
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