In the early of 1980s, automation instruments controlled the web-strip hot furnace popularly, whose controller is analogy PID adjuster.
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- 八十年代前期,网带式加热炉大多采用自动化仪表控制,控制器采用模拟的PID调节器,产品的质量很难达到工艺要求,合格率不高;