Figure 7 Simulation result for a sine wave reference input
The simulation result shows that the solenoid based linearly movable
armature system with H infinity mixed-sensitivity controller track the
reference speed better than the solenoid based linearly movable armature
system with mixed H 2 /H∞ with regional pole placement controller.
Conclusion
In this paper, modelling, design and control of the solenoid based
linearly movable armature system using H infinity mixed-sensitivity and
mixed H 2 /H∞ with regional pole placement controllers have been
successfully done with the aid of Matlab/Simulink Toolbox. The proposed
controllers improved the performance of the position controlling
mechanism and comparison of the system with the two controllers for
tracking a reference displacement signals (step and sine wave) is done.
The solenoid based linearly movable armature system using H infinity
mixed-sensitivity controller has better percentage overshoot and
settling time in the step reference displacement signal and better
tracking the input signal in the sine wave reference displacement signal
than the solenoid based linearly movable armature system with mixed H 2
/H∞ with regional pole placement controller.