HdrChopper wrote on Mar 10th, 2009, 6:25pm:Hi Sun,
I never saw a chopper stabilization z-domain model before. Chopper-stabilization is a continous-time modulation technique which does not involve sampling. Therefore z-domain modeling for it does not look natural to me since is NOT a discrete time system (which are the systems that can be modeled in z-domain).
Is the product box you put before and after your integrator in Matlab
synchronized with the clock?
Regards
Tosei
Hi Tosei,
Thands for your reply.
The products box that I put in simulink model are synchronized with clock. But I realized that putting products before and after the first integrator is wrong. In fact, the chopper switches should be placed before and after the opamp but the integrator. It seem to be difficult to model chopper stabilization in simulink.
now, I have realized a sigma delta modulator with chopper stabilization in veriloga. but if you have some idea to do it in simulink, I'm glad to know that.
Regards
Sun