ac motor control造句

• Dc motor has good mechanical character and is apt to accomplish varied control rules, and some theories about its controlling are still the basis of ac motor control
  直流电机具有良好的机械特性，易于实现各种控制规律，同时直流传动控制系统的一些理论仍然是交流传动的基础。
• The typical technology for ac motor control has vvvf, vsvf, vc and dtc etc . direct torque control ( dtc ) of asynchronous motors, which has been developed in the recent decades, is a power control method for motor drives
  交流电机控制技术具有代表性的有调压调频控制、转差频率控制、磁场定向控制(矢量控制)以及随后出现的直接转矩控制(dtc)等。
• But because of dc motor's complicated structure, manufacture consuming time, constant maintenance and so on, people try to replace the dc motor speed regulation with ac motor speed regulation . by the development of power electronics, pwm technology, computer control and ac motor control, ac speed regulation system is replacing ac speed regulation system by its many faults such as solidity, safety and so on
  20世纪80年代以前，要求调速的设备多用直流电动机调速，但由于直流电动机结构复杂，制造费时以及需要经常性维护等缺点，使得人们一直努力寻找能替代直流电动机调速的交流电动机调速。随着电力电子技术、pwm调制技术、计算机控制技术、交流电动机的控制技术的发展，交流调速系统由于其坚固耐用、运行可靠等众多优点，正在逐步取代以前直流调速系统，在传动领域占据主导地位。
• This d format can show the range of the data intuitively and express the real time data, which improves the speed and precision of svpwm arithmetic greatly . the ratio of carrier wave is increased and the blend of current is reduced, as a result the performance of the system is ameliorated . this thesis project has finished the debugging of the ac motor control system, and the result shows that hardware and software of the designed system is in reason
  在实现svpwm算法的汇编程序中采用了一种新型的d定标法对标幺化的数值进行定标，这种d定标法能直观的表示数值的大小范围，可以实时的对数值进行定标，提高了svpwm算法执行的精度和速度，增加了逆变器的载波比，减少了电流谐波，因而改善了交流变频调速系统的性能。
• According to the parameter of the motor and the new requirement on ac motor control system, as for the hardware, the inverter module, protection module and control module based on the tms320lf2407 is designed . several independent sources, optocouplers are used on the printed circuit board to void the interference
  根据被控电机的参数以及当前对变频调速系统的新要求，论文在硬件电路设计方面，以tms320lf2407型dsp为控制芯片，设计了变频调速系统的逆变电路、保护电路及控制电路。