Experimental results show that the exhaust tuning chamber can improve the engine performance at the middle low speed range.
试验表明，采用排气调谐腔能有效改善发动机在中低速区的性能。
The result shows that the dynamic performance of twelve-section control scheme is superior to that of six-section control scheme, especially in the low speed range.
结果显示，十二分区方案在动态性能方面，特别是在低速区，要明显优于六分区方案。
The flow-induced self-sustaining oscillation and standing wave resonance of protruding and trap cavities are studied at the low speed range.
本文研究了低流速范围内突出式和陷落式圆柱形腔的流激自持振荡和驻波共振问题。
By means of the tuning chamber, the tuning speed range of exhaust system is widened. Thus, the two-stroke petrol engine performance at the middle-low speed range can be improved.
本文采用加装排气调谐腔的方法，拓宽了摩托车用二冲程汽油机排气系统的调谐转速范围，有效地改善了发动机在中低速区的性能。
Due to the large torque ripple of direct torque control in low speed range, a torque Angle adjustor based on fuzzy neural network and PI control was adopted to improve the control effect.
针对直接转矩控制低速时转矩脉动大的问题，采用基于模糊网络与PI控制结合的转矩角调节器来改进控制效果。
The device may increase the electric braking force of the locomotive at low speed range. It fulfills the requirement for locomotive listed in Artical 214 of Railway Technical Specificat on.
该装置能增加机车低速运行区的电制动力，满足了“技规”第214条对机车的要求。
Experiments show that the motor phase current controlled by this kind of SPWM inverter can be strictly sinusoidal and the running of the motor can remain steady for the ultra low speed range.
实验结果表明，这种SPWM逆变器控制的电机相电流严格正弦，能在超低速下平稳运行。
The sensorless of induction motor field-oriented control employing stator voltages and currents has difficulty in estimating rotor flux in the low-speed range.
在低速范围内，对无传感器感应电动机进行矢量控制时用定子电压和电流推算转子磁通是比较困难的。
The low. speed range comes to 30 percent of synchronous speed of the machine.
低速工作转速范围达同步转速的30％。
The low. speed range comes to 30 percent of synchronous speed of the machine.
低速工作转速范围达同步转速的30％。
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