USES frequency conversion control system, can real time monitoring gas supply lines gas pressure, make the gas supply pipe gas pressure constant, improve the production efficiency and product quality.

采用变频控制系统后，可以实时监测供气管路中气体的压力，使供气管路中的气体的压力保持恒定，提高生产效率和产品质量；

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In order to realize synchronous control, distributed motor synchronous control system based on PLC and frequency conversion and PID control arithmetic are adopted.

本文提出了基于PLC和变频调试技术的集散式同步控制方案和采用PID控制算法实现多电机的同步控制。

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This paper introduces three kinds of energy modifying technology, multi-control system, frequency conversion technology and digital scroll technology.

介绍了空调系统中的压缩机几种能量调节技术：多级控制系统、变频技术和数码涡旋技术。

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