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；
Automatic constant pressure control of system has completed by press-sensor, PLC, frequency converter etc.
系统通过压力传感器、PLC、变频器等设备完成供水系统自动恒压控制。
Practice has proved that the frequency conversion and constant pressure fuzzy control system has advanced technique and notable benefit? It has good application value and more research value.
实践证明：变频恒压模糊控制系统具有优越的技术性能和极其显著的经济效益，有很好的推广应用价值和进一步的研究价值。
Detailed method of the constant pressure control by frequency converter is described.
介绍了采用变频调速实现恒压控制的详细方法。
Through application of frequency converter in constant pressure water supply system, the paper describes the economic feature and advantages of adopting AC frequency conversion speed control method.
通过变频器在恒压供水系统中的应用，阐述了采用交流变频调速控制方案的经济性和优越性。
As the application of the frequency control technology and programmable logic controller is flexibility, in the constant pressure water supply system they has been widely used.
由于变频调速技术和可编程程序控制器的应用灵活方便，在恒压供水系统中亦得到广泛的应用。
The paper presents the system design method and control process of applying frequency converter to realize water provision in constant pressure for high building.
本文介绍了用变频器实现高层建筑恒压供水的系统设计方法和控制过程。
The applied plan is introduced of frequency control system by the microcomputer for constant -pressure water supply to circulating pump stations, and the system is analysed.
介绍了微机控制变频恒压供水系统在循环泵站中的应用方案，并对系统进行了分析。
Finally, it is applied for the design of varied-frequency control system under constant-pressure.
最后，应用于高精度变频恒压控制系统设计中。
The constant pressure control system of finished water based on frequency adjusting is widely used in water works.
现阶段，基于变频调速的出厂水恒压控制系统，以其结构简单、容易实现等优点被国内水厂广泛采用。
A novel AC variable frequency converting control system with multiple functions is introduced. The system is suitable for maintaining constant oil pressure in main line of oil pipelines.
阐述了一种新型多功能交流变频调速控制系统，用于保持油田输油管主干线油压恒定。
In this thesis, the focus is the principle of frequency conversion constant pressure water supply control, designing frequency conversion constant pressure water supply control system.
论文讨论了变频恒压供水控制原理，设计了变频恒压供水控制系统。
In this thesis, the focus is the principle of frequency conversion constant pressure water supply control, designing frequency conversion constant pressure water supply control system.
论文讨论了变频恒压供水控制原理，设计了变频恒压供水控制系统。
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