Simulink Control Design™ - MathWorks

Tuning for Multiple Values of Plant Parameters

This example shows how to use Control System Tuner to tune a control system when

there are parameter variations in the plant. The control system of this example is an

active suspension on a quarter-car model. The example uses Control System Tuner to

tune the system to meet performance objectives when parameters in the plant vary from

their nominal values.

Quarter-Car Model and Active Suspension Control

A simple quarter-car model of the active suspension system is shown in Figure 1. The

quarter-car model consists of two masses, car chassis of mass and the wheel assembly

of mass. There is a spring and damper in between to model the passive spring

and shock absorber. The tire between the wheel assembly and the road is modeled by the

spring.

Active suspension introduces a force between the chassis and wheel assembly and

allows the designer to balance driving objectives such as passenger comfort, road

handling using a feedback controller.

13 Control System Tuning Examples