what do the variable P,I and D mean in PID(z) in simulink?
5 次查看(过去 30 天)
显示 更早的评论
Hello, As you saw in my question, do P.I and D means Ku(ultimate gain),Ti and Td respectively when using the PID from simulink? thanks
1 个评论
采纳的回答
更多回答(3 个)
Jim Riggs
2018-2-5
See the link to help in Guillaume's comment:
Proportional
Integral
Differential
0 个评论
Birdman
2018-2-6
This question can be answered in different aspects but let me start from explaining them in this way:
If you are going to write IDEAL(not reasonable in this form) PID structure, you may write it as follows:
PID(s)=(Kd*s^2+Kp*s+Ki)/s
and also, a second form, which is also widely used IDEAL(not reasonable in this form), is as follows:
PID(s)=Ku*(1+(1/Ti*s)+(Td*s))
Which one to use is totally up to the user. In the first form, you can think of each term as independent because every term has its gain and by setting each of them, you design a PID. In second form, you have a global gain for your PID and time constants Ti and Td decides the weight of I and D term in your controller respectively.
1 个评论
Birdman
2018-2-7
Answer to
Hello Birdman and Thank you so much for your help. So what I understood is that I have to write the value in the PID(z) in simulink as showed in the pictures.is it correct!
See the attached figures, for both ideal and parallel PID, the thing that I explained in my answer.
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 PID Controller Tuning 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!