The model test tried on this system did not use the tachometer generator but used rotor electromotive force instead to form the speed negative feed-back system.
本绕线式电动机转子电路脉冲调速系统模拟试验，省去了测速发电机，而利用转子电势组成速度负反馈系统。
The rotor model test system is the basic and most important test facility for the research of helicopter theory and technology, and also for the development of a new helicopter.
旋翼模型试验系统是开展直升机理论与技术研究、新机研制的最基本和最重要的试验设备。
The molding test shows that the mathematic model can control effectively the quality and efficiency of helix rotor molding.
试验表明：该模型可有效控制螺旋转子的成型质量和成型效率。
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