scholarly journals New Results on PID Controller Design of Discrete-time Systems via Pole Placement * *This work was supported in part by the National Natural Science Foundation of China (NSFC) (No. 61374137), the IAPI Fundamental Research Funds (2013ZCX02-03), and the Fundamental Research Funds for the Central Universities (N160403003).

2017 ◽  
Vol 50 (1) ◽  
pp. 6703-6708 ◽  
Author(s):  
Honghai Wang ◽  
Jianchang Liu ◽  
Xia Yu ◽  
Shubin Tan ◽  
Yu Zhang
Keyword(s):  
Discrete Time ◽  
Natural Science ◽  
Pid Controller ◽  
Controller Design ◽  
Pole Placement ◽  
Discrete Time Systems ◽  
Pid Controller Design ◽  
Fundamental Research ◽  
Time Systems

Stability and robustness for discrete-time systems with control signal saturation

2000 ◽  
Vol 214 (1) ◽  
pp. 65-76 ◽  
Author(s):  
A R Plummer ◽  
C S Ling
Keyword(s):  
Discrete Time ◽  
Controller Design ◽  
Control Signal ◽  
Design Stage ◽  
System Control ◽  
Stability Robustness ◽  
Discrete Time Systems ◽  
The Stability ◽  
Time Systems ◽  
Signal Saturation

All practical control systems exhibit control signal saturation. The effect that this saturation has on the control system performance, especially stability and robustness, can be significant and must be understood at the controller design stage. This paper presents conditions for global asymptotic stability and measures of stability robustness for such systems. These are demonstrated through simulation examples, and it is shown how an understanding of the stability conditions can inform the controller design process. The off-axis circle criterion is used as the basis for a sufficient condition for stability, and it is argued that this is not overly restrictive in practice. The derivations are carried out in discrete time, and servo-system control is envisaged as an important application area for the techniques; however, the results are applicable more widely.

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