CAJ | 학술논문

驱动系统在科氏质量流量计中起到了非常重要的作用,驱动性能的好坏直接影响着质量流量测量的准确性;非线性幅值控制算法是一种好的驱动增益控制算法,其中的PI控制器有2种实现方法,即积分分离的PI控制器和积分限幅的PI控制器;为了比较不同控制方法的效果,文章基于科氏传感器的时变参数模型,根据实际驱动电路来建立Simulink仿真模型,用驱动电路驱动CNG050传感器得到的实验数据,来验证模型参数设置的正确性,通过Simulink仿真,研究了2种不同控制方法,结果表明,积分限幅的PI控制器的控制效果较好.
구동계통재과씨질량류량계중기도료비상중요적작용,구동성능적호배직접영향착질량류량측량적준학성;비선성폭치공제산법시일충호적구동증익공제산법,기중적PI공제기유2충실현방법,즉적분분리적PI공제기화적분한폭적PI공제기;위료비교불동공제방법적효과,문장기우과씨전감기적시변삼수모형,근거실제구동전로래건립Simulink방진모형,용구동전로구동CNG050전감기득도적실험수거,래험증모형삼수설치적정학성,통과Simulink방진,연구료2충불동공제방법,결과표명,적분한폭적PI공제기적공제효과교호.
The driving system plays a very important role in the Coriolis mass flowmeter because its performance affects the measurement accuracy of the Coriolis mass flowmeter. The non-linear amplitude control algorithm is a good approach to control the driving gain. There are two kinds of PI controllers in this algorithm. One is the separate-type integral PI controller, and the other is the limiting-type integral PI controller. According to the time-varying parameter model of the Coriolis sensor, a simulation model is built up by Simulink modules based on the actual driver circuit in order to make a comparison between different controlling methods. The driver circuit is developed to drive the CNG050 type sensor, and the experimental data are used to verify the parameters of the simulation model. Simulink simulations are performed to study two kinds of PI controllers. The results show that the control effect of the limiting-type integral PI controller is better than that of the separate-type integral PI controller.