基于变频器的工程测控系统

Engineering measurement and control system based on converter

针对传统工程测控设备存在的问题,为了提高测控试验中的可控性和测控精度,在对其测控实验进行多次分析的基础上,设计并开发了一套新型的测控仪器。该仪器以变频器和单片机(SCM)为主要控制单元,由上位机与下位机构成,并通过RS485实现了无线通讯;通过多次实验总结出了测控系统控制算法,并有效地消除了测试过程中的电气干扰;试验过程中通过实时监测各传感器的反馈值,实现了对测控过程的连续监督和控制。研究结果表明,相对传统的测控系统,该工程测控系统的稳定性和操控性得到了很大提高,而其测量精度则提高了10倍以上,该变频器在测控仪器中得到了很好的应用。

Aiming at overcoming the shortcomings of the traditional engineering test instrument and improving the controllability and the control precision of the testing, a new type of measurement and control instrument was developed. The instrument with single chip micyceo （SCM） and converter as the main unit component was made up of the host computer and actuator which communicate via RS485.Contro1 algorithm of the test system was a result summarized from a lot of experiments, and all electrical interferences in testing were also eliminated. The feedback of all sensors and the process were monitored in real time in order to realize continuous measurement and control. Compared with traditional instrument, this instrument has improved stability, manipulation, the control precision of the measurement and control tests increases at least 10 times. The results indicate that the application of the converter in the test instrument is very effective.