Simulink Control Design™ - MathWorks

The controller must regulate the voltage Vchip delivered to the device to track the

setpoint Vcmd and be insensitive to variations in load current iLoad. The control

structure consists of a feedback compensator and a disturbance feedforward

compensator. The voltage Vin going into the amplifier is limited to. The

controller sampling rate is 10 MHz (sample time Tm is 1e-7 seconds).

Performance Requirements

This application is challenging because the controller bandwidth must approach the

Nyquist frequency pi/Tm = 31.4 MHz. To avoid aliasing troubles when discretizing

continuous-time controllers, it is preferable to tune the controller directly in discrete

time.

13 Control System Tuning Examples