Dominant Mode Design of Third-Order Linear Control Systems: Part 2 Open Loop Poles and System Design

1973 ◽  
Vol 6 (11) ◽  
pp. 475-480
Author(s):  
A. Asbury
Keyword(s):  
Control Systems ◽  
Design Method ◽  
Dominant Mode ◽  
Open Loop ◽  
Linear Control ◽  
Linear Control Systems ◽  
Previous Issue ◽  
Third Order ◽  
New Approach ◽  
Mode Design

This completes the design method begun in the part published in the previous issue by providing loci of the corrected open loop poles required for the selected systems. Two examples are given to illustrate the new approach to performance limitations and correction methods. Pole relocation by cancellation is advocated and the consequences of inexact cancellation are discussed. The mathematics used in the program for the loci is given in two Appendices.

Stability Determination for Linear Control Systems with Distributed Lags

1972 ◽  
Vol 5 (6) ◽  
pp. 238-241 ◽  
Author(s):  
F L N-Nagy ◽  
M N Al-Tikriti
Keyword(s):  
Control Systems ◽  
Open Loop ◽  
Linear Control ◽  
Linear Control Systems ◽  
Loop Gain ◽  
Variable Parameters ◽  
Distributed Lag ◽  
Distributed Lags ◽  
Loop Transfer Function ◽  
The Stability

The paper outlines a specially adapted stability criterion for linear control systems with distributed lags. The stability is studied with respect to two variable parameters, ie the loop-gain and the distributed lag. The criterion employs an easily constructed chart prepared beforehand and only requires the plotting of two curves derived from the open-loop transfer function. The stability of a simple control system is investigated to illustrate the scheme.

OPEN-LOOP AND CLOSED-LOOP OPTIMIZATION OF LINEAR CONTROL SYSTEMS

2008 ◽  
Vol 2 (3) ◽  
pp. 155-168 ◽  
Author(s):  
R. Gabasov ◽  
F.M. Kirillova ◽  
N.V. Balashevich
Keyword(s):  
Control Systems ◽  
Closed Loop ◽  
Open Loop ◽  
Linear Control ◽  
Linear Control Systems ◽  
Loop Optimization
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