til117 / hinf

A Hinf control design for an electrical device powered by the 50 Hz (100π rad/s) power grid

hinf

A Hinf control design for an electrical device powered by the 50 Hz (100π rad/s) power grid

Implemented in MATLAB for a control course at KTH.

Description

In H ∞ control design the sensitivity and complementary sensitivity function are shaped to meet certain desired specifications. The main goal here is to get a feeling for how H ∞ control design can be used to obtain desired specifications on sensitivity and robustness.

The Simulink model named servo1.mdl is used to simulate the system. A step is used as reference and disturbances can be added as band-limited white noise and a sinusoid. To run the simulation the short macro command, found on the homepage, can be used. In the beginning of the file macro.m there are some parameters that can be changed to customize the simulation. The parameters are described in the m-file.

To run the macro, the controller and system must first be saved as transfer functions named Fsim and Gsim in workspace. The macro runs the simulation and plots the results in a new figure.

Below is an example of a sequence that simulates the system. The system and controller are assumed to be defined as transfer functions in workspace with the names F and G.

Fsim=F; Gsim=G ;

% Edit parameters in macro.m

macro

Now the simulation should start and plot the results when ready.

Input system

The system to control in this lab is an electrical device powered by the 50 Hz (100π rad/s) power grid.

Instructions

Just run the MainFile.m