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。
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。
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。
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 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 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。
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。
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。
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