What kind of control is this?
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It is a polypropylene loop jacket water temperature control system; the controller operates two valves. When in automatic mode, the sum of the outputs from valve A and valve B is always 100. For example, if valve A’s output is 45, then valve B’s output is 55. What type of control system is this?
Regarding hierarchical control systems, look at the hierarchical curve
Master, is it by route or by layer? If it’s segmented, isn’t segmented control usually used for that? If it’s layered, please provide some information on layered control
Step control. The slopes of the two lines can be calculated.
Perhaps my understanding is incorrect. By segmented control, I mean that the controller acts in segments; in other words, at any given moment, the output can only go to one control valve. Is it possible to send the signal to two valves simultaneously? I know there are overlapping cases; is this considered a complete overlap? And what does slope mean?
This post was last edited by jujiangliu on 2017-1-19 at 14:59. The output of a regulator controls two valves simultaneously, in opposite directions. It should be a single-loop control system, just like controlling a three-way valve – one path sees an increase while the other sees a decrease. Personal opinion.
Step control system, intersection of the characteristic curves of the two valves
It’s awkward; I keep making typing mistakes: lol. Look at the comments below