The observer-based sliding mode controller seems to be working in MATLAB simulink, but since I couldn't implement it real-time using MATLAB real-time workshop, I've written a piece of code in C trying to implement it through dSpace card. However, I am not able to stabilise the system with the same controller which works fine in Simulink. Does the controller have to be designed specifically in discrete-time or there is another problem?
Rgds
I have implemented the observer-based sliding mode controller for DC motor drive, using the Matlah/Simnlink. All blocks enable easy graphical
programming of the different control algorithms and at the end, with the Real-Time
Workshop and the Code Composer for the C3x4x
digital signal processors, the binary executable code
can be generated from the Sirnulink model and
downloaded to the DSP controller, it is executed in real time, similar to the dSPACE controller.
Difference between the programs written by simulink block and by C codes might be
evaluation of the integrator and derivative blocks?
and some times integrator reset, limiters cause this kind of instability
m.dal
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