Control Valve Modeling: Get Physical Representations & Convert to State-Space

[bropaulonwe]

1. I'm carrying out the modeling of control valve using Physical method as part of my project. The first step is to get the physical model representation of a valve and then carry out the modeling. Secondly, I need to incorporate friction in the modeling to see the effect. I've seen a number of valve (friction) physical models but the authors did not go beyond stating the equations. I need to be able to get a true model representations of valves and valves with friction and then convert them to state-space or any other suitable form that can be programmed in MATLAB. Any help will be highly appreciated. Thanks

Homework Equations

The Attempt at a Solution

 

[Valkarie]

The first step is to find the mathematical model of the valve. This can be done using a variety of approaches, such as data fitting, model structure identification, and system identification. Once the model is identified, you can then incorporate friction into the model. Depending on the type of friction, there are several different models that can be used. For example, if the friction is viscous, you can use a linear or nonlinear friction model. If the friction is Coulomb, then a simple linear friction model can be used. Once you have the model, you can then convert it to a state-space or other suitable form in MATLAB.