Dear friends:
While one can easily write an *.m file for implementing a sliding mode control,
for example, to stabilize a control system, integral sliding mode control is also
a popular scheme and used in many papers.
I like to know how to write an *.m file for implementing integral sliding mode control?
I like to kindly request Sliding Mode Control (SMC) experts to illustrate this control
and MATLAB code with a simple example of a control system on the plane (with twostates x1, x2) and how to set up the integral sliding mode control in MATLAB.
Thanks a lot!
With best wishes, Sundar
basically when we device an integral sliding mode control we have a surface say s = s0 + z, where z is known as the integral term. which we get by integrating \dot{z} and \dot{z} is obtained by evaluating \dot{s} = 0,
Now in simulation what you have to do is to just find a solution to \dot{z} by using any of the technique say ode45. this is done similar to your other two other states.
Important to note that you must take care of the initial conditions keep the initial conditions such that s(0) = 0.
Another possible alternative is to use a hybrid of Simulink model and the M code. The sliding mode controller can be written without the 'integration' in the 'MATLAB user defined function block' in Simulink model. The integrator block (continuous or discrete) is then connected externally to the SMC. The solver for simulation can be chosen from the various options that simulink provides.
Dear Arshad:
Thanks for your advice on sliding mode control techniques.
MATLAB is new to me.. I wish I can write codes like experts here!
Hopefully I am learning research every day..
With regards, Sundar
I think the following book is useful for you
" Sliding mode control using MATLAB"
Jinkun Liu , Academic Press ,2017
Best regards
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