The principle of PAM PWM compound control and the power transistor AC adjustable speed system based on that principle are presented in this paper.
本文介绍PAM、PWM复合控制原理和按此原理研制的大功率晶体管宽调速交流调速系统。
This paper presents the methods of transfer function analysis and engineering design for variable frequency adjustable speed system of induction motor supplied by current source inverter.
本文提出了一种异步电动机电流型变频调速系统传递函数的分析及工程设计方法。
This paper discusses the theoretical and experimental studies on the KASKAD 8a A. C. Cascade adjustable speed system which was imported by Guangzhou Water Company from Emphasis ASEA Company.
本文对广州自来水公司从瑞典asea公司引进的KASKAD8a交流串级调速装置进行了理论和实验的研究。
Comparing with frequency converting driving system for asynchronous machine and adjustable speed for DC motor, the driving system has a wide application foreground.
与变频异步电机驱动系统和直流电机调速系统相比，开关磁阻电机驱动系统有着广阔的应用前景。
Its vector control system is one of the most complicated ac adjustable speed control systems.
其矢量控制系统也是最复杂的交流电机调速控制系统之一。
No commutator motor is a new variable-speed motor, its adjustable-speed performance is more advantage than dc system.
无换向器电动机是一种新型的可调速电机，其调速性能优于直流调速系统。
The ACS 5000 variable speed drive system enables Boeing to run the fan in adjustable speed mode or at constant speed, depending on the protocols and parameters of each test.
ACS 5000变速驱动系统使得波音公司可以根据每个测试的规程和参数，自由设定可调速度模式或者恒速模式。
And adjustable speed the variable air volume air conditioning automatic control system saves energy through setting different static pressure values in different time periods.
变风量空调控制系统以变频调速为手段，分时段设定静压值以实现节能。
Make use of adjustable fan unit system touching switchgear adjust voltage keep the wind speed of working area always in perfect status.
采颐可调风量风机系统，轻触式开关调节电压，保证工作区风速始终处于理想状态。
Therefore, the paper combines fuzzy control with other intelligent control methods and modern control methods in order to study the intelligent control and optimization in AC speed-adjustable system.
本文将模糊控制思想分别和其它智能方法以及现代控制理论相结合，对交流调速系统的智能化控制及其优化进行了研究。
By using BP neural networks to oltain the model of AC speed adjustable system; another CMAC is used for adaptive controller.
该方法采用一个三层BP网络辩识交流调速系统的特性，用另一个CMAC神经网络作为自适应控制器。
A practical method of designing speed-adjustable system of sensorless vector control which base on PLC hierarchical intelligent control is proposed in this paper.
本文提出了一种实用的基于PL C分级递阶分布式控制的多电机无速度传感器矢量控制调速系统设计的新方法。
The system has been debugged and the massive experiments have been done in the laboratory, and adjustable-speed function has been realized.
在实验室里对整个系统进行了调试和大量的实验，实现了调速的功能。
A new scheme based on the optimal model intelligent adaptive control of AC speed adjustable system is presented.
对交流调速，文章提出了一种最优模式智能自适应控制的新方案。
The principle of braking unit for Frequency-variable Speed-adjustable System was introduced, by analysing, a simple braking circuit of energy-consumed was designed.
阐述了变频调速系统中制动单元的工作原理，基于分析能耗制动工作方式的基础上，设计了一种简单的能耗制动电路。
Make use of adjustable fan unit system, touching switchgear adjust voltage, keep the wind speed of working area always in perfect status.
采用可调风量风机系统，轻触式开关调节电压，保证工作区风速始终处于理想状态。
The data collection and adjustable frequency solution: using state machine to control A/D conversion controller, the system could get higher speed and higher reliability;
数据采集及可变频率的解决方案：采用状态机实施对A/D转换器的控制，速度高，可靠性高；
The disclosed excitation unit of rotatable electronic converter supplies stable adjustable dc excitation for synchro motor, promoting competitive power of speed control system of synchro motor.
本发明的可旋转电力电子变换器同步电机励磁装置能为同步电机提供稳定可调的直流励磁，可大大提升同步电动机调速系统的竞争力。
A new digital adjustable speed DC system controlled by the single chip microcomputer 8098 is presented.
提出一种采用80 98单片机控制的新型全数字式直流调速系统。
Recent years, multilevel inverter has been applied widely in the large-capacity electrical energy transformation of high-voltage and ac speed adjustable system.
近年来，多电平逆变器在高压大容量电能变换及交流电机调速中得到广泛应用。
The design method of this brushless DC motor speed-adjustable system is introduced. It is shown that the design is rational by prototype trial. The fine applying result is obtained in practice.
文中介绍了该无刷直流电机的设计和控制方法，通过样机的试验和应用效果良好。
Random PWM technology is a direct and effective way to alleviate acoustic noise in adjustable-speed system.
随机脉宽调制是解决交流调速系统中声学噪声的直接有效方法。
Random PWM technology is a direct and effective way to alleviate acoustic noise in adjustable-speed system.
随机脉宽调制是解决交流调速系统中声学噪声的直接有效方法。
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