液位装置串级控制系统的设计.pdfVIP

液位装置串级控制系统的设计 摘 要 由于工业上对流量计有一定的检定标准，所以需要有一套专门检定流量计的液 体流量标准装置，本次设计的对象就是一套液位标准装置。设计主要目的是使之得 到一个标准液位，使流体能够一直保持一个稳定的输出流量。设计的主要内容是根 据装置特性，选择液位—流量串级控制系统，并对其中的调节器、调节阀进行选型 以及计算。经过对装置的设计，选择气关阀为调节阀，控制器选择反作用式。串级 控制系统由于副控制回路的存在，实现了对副变量的控制，大大地克服了副变量干 扰的影响，使主变量变得比较平稳。这套装置属于复杂控制实验装置，具有一定的 实用性，可行性。 关键词：流量、标准装置、标准液位、调节阀、复杂控制 - １- 液位装置串级控制系统的设计 Abstract As a result of there are some test-standard of flowmeter in industry, so we need a specialism equipment of the standard equipment of liquid flux. The object of this plan is a standard equipment of flux. The purpose of this designing is to gaineding a standard liquid. It could be keep a jarless output. The main of design is choose a system of strand-loop(Liquid-discharge) cortrol, and choose the type as well as count for the adjustment. By the designing of the equipment, choosing the valve of close when lost air. The director I choosed the type of feed back. Because the control loop of the secondary flow is exist , the strand-loop system realize the control to the secondary variable, and it’s out and away conquer the effect of the secondary variable’s interfere, make the primary variable became more smooth. The device belongs to a complicated control experimental device and can be used in many applications. Keywords ：flux、equipment of jarless －tension 、jarless air pressure 、standard liquid adjustment proportional control