27-08-2013, 04:56 PM
Design Analysis of Phase Lead Compensation for Typical Laser Guided Missile Control System
Using MATLAB Bode Plots
Design Analysis of Phase .pdf (Size: 842.29 KB / Downloads: 44)
Abstract
A typical laser guided missile control has been
discussed. The paper describes the result comparisons that were
developed for the phase lead compensator design using Nichols
Chart and Bode plots. The implementation of classical
experiments as MATLAB m-files is described. Laser guided
missile control system can be designed to gain insight into a
variety of concepts, including stabilization of unstable systems,
compensation properties, Nichols analysis and Bode diagram.
The analysis has resulted in a number of important conclusions
for the design of a new generation of control support systems.
The final lead compensator network has been designed by using
Ogata’s lead compensation network.
INTRODUCTION
A compensator is an additional component or circuit that
is inserted into a control system to compensate for a deficient
performance. The purpose of phase lead compensator design
in the frequency domain generally is to satisfy specifications
on steady-state accuracy and phase margin.
The control system is based on the actual missile control
system. The Nichols chart is a rectangular plot of open-loop
phase on the x-axis against open-loop modulus (dB) on the y-
axis. M and N contours are superimposed so that open-loop
and closed-loop frequency response characteristics can be
evaluated simultaneously. Like the Bode diagram, the effect of
increasing the open-loop gain constant K is to move the open-
loop frequency response locus in the y direction. The Nichols
chart is one of the most useful tools in frequency domain
analysis. The data from Nichols are applied to the Bode plots
for the necessary design data.
CONCLUSIONS
In this paper the comparison between uncompensated
and compensated system has been discussed by Nichols. The
design circuit has been presented the control system point of
view. The designer has been assumed the frequency
components C1 and C2 .The Op-Amp is used as an ideal case.
In the further extension, the designers are applied with high
performance Op-Amp according to the actual missile system.