Help on hydraulic actuator controller(pid)

Can someone help me on the pid cascade controller for a hydraulic actuator? I'm using the basic setup which includes a proportional valve to control the flow and a normal hydraulic cylinder for actuation. as far as I know, it's not possible to control the system using just 1 pid, since the functionality and signal type for the directional valve and the feedback are different... can someone help on the control system .....!!! please

[Nicolas Schmit]

Could you post your model or a sketch of your system?

Answer 1

[Nicolas Schmit]

If is just a problem if interfacing a Simulink PID with a Simscape valve, there are Simulink-PS Converter blocks to do that.

Answer 2

[ayoub reffai]

Hello everyone

iam again in need of your hel^p

im trying to model a hydraulic actuator in matlab , but the thing is its has to be commanded by a PID , i was wondering in you can help me out , its wont command

the screens are in joint file

please help

[Sam Chak]

Hi @ayoub reffai,

Please post a new question.

If you want to solve this problem effectively, post the equivalent mathematical model that describes the linearized dynamics of what is shown in your Simscape model. For example,

[ayoub reffai]

hello

the PID do not work in state presentation ; and also the model isnt lineair , we do not know the equations