Who can explain the control laws of automatic control systems?
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Who can explain the control laws of automatic control systems?
I’m not sure what the pattern is; it seems too general. It is usually set according to specific needs; the rules are established by humans. For reference.
I also think this question is too vague; it would be better to be more specific, otherwise there’s no way to proceed!
This is the answer given for the question in our exam: 1. Automatic control systems are classified according to (), and can be divided into proportional, proportional-integral, proportional-differential, proportional-integral-differential, and other types of control systems. A. Control variable B. Controlled variable C. Control law. 2. Automatic control systems can be classified according to (), and they can be divided into control systems for temperature, pressure, flow rate, liquid level, rotational speed, etc. A. Controlled variable B. Manipulated variable. All of the correct answers given are controlled variables, which confused me. C. Control law
This is the answer given for the question in our exam: 1. Automatic control systems are classified according to (), and can be divided into proportional, proportional-integral, proportional-differential, proportional-integral-differential, and other types of control systems. A. Manipulated variable B. Controlled variable C. Control law Answer: C, Control law 2. Automatic control systems can be classified according to (), and they include control systems for temperature, pressure, flow rate, liquid level, rotational speed, etc. A. Controlled variable B. Manipulated variable Answer: A, Controlled variable. For question 2, the only options given are A and B; there is no option C, so it is clearly incorrect to state that the answer to question 2 is C.
Thanks, I agree with your answer.
In general terms, it involves incorporating the process (equipment) characteristics related to reaction/heat transfer/pressure transmission into the “DCS control scheme”. Since it is deviation control, the output must move in the opposite direction of the process characteristics in order to correct the deviation and maintain stability.
There’s nothing truly special. If you’re lucky, it can be fixed no matter what; if you’re not lucky, it’s hard to fix no matter how you try. Getting it done is the key; rules are only applicable in general cases
Hahahah, is what the original poster is doing exam questions for instrument skills? I just want to say that those who created these questions didn’t understand them at all; there are tons of mistakes. For one set of questions, one set of answers is given, while for another set of questions, a different set of answers is provided. The exam reference books provided have incorrect formatting; it’s part of the exam-oriented education system – there’s no need to be too precise. One can read books on instrumentation or just search on Baidu, as information is so readily available these days. :P