Research on safety performance of controllers in start-up phase based on step response method

doi:10.16265/j.cnki.issn1003-3033.2018.04.016

Abstract

Abstract: To analyze the characteristics of safety performance of controllers in the start-up phase, a step response model was built for job performance. The time-domain performance indicators under different damping ratio were determined based on the step response types. 20 min continuous cancellation test data on 20 controllers were collected, and the damping ratio and its time-domain performance indicators were calculated in Matlab. The results indicate that the start-up types of controllers can be divided into oscillation inertia start-up (0<ζ<1) and monotonic inertia start-up (ζ>1) based on the damping ratio, and the start-up speed is inversely proportional to the response time, and that the parameters of the step response curve can be used to identify the start-up type and the start-up speed of controllers effectively.

Key words: controller, safety performance, cancellation test, step response, damping ratio

CLC Number:

X949

LI Jingqiang, LI Kang, LI Hao, ZHAO Ning. Research on safety performance of controllers in start-up phase based on step response method[J]. China Safety Science Journal, 2018, 28(4): 91-96.

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