A family of circulant megastable chaotic oscillators, its application for the detection of a feeble signal and PID controller for time-delay systems by using chaotic SCA algorithm

2021 ◽  
Vol 148 ◽  
pp. 110992
Author(s):  
Karthikeyan Rajagopal ◽  
Murat Erhan Cimen ◽  
Sajad Jafari ◽  
Jay Prakash Singh ◽  
Binoy Krishna Roy ◽  
...  
Keyword(s):  
Time Delay ◽  
Pid Controller ◽  
Delay Systems ◽  
Time Delay Systems ◽  
Chaotic Oscillators

Optimal tuning of PID controller in time delay system: a review on various optimization techniques

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Thomas George ◽  
V. Ganesan
Keyword(s):  
Time Delay ◽  
Pid Control ◽  
Pid Controller ◽  
Optimization Techniques ◽  
Operating Conditions ◽  
Delay Systems ◽  
Pid Controllers ◽  
Time Delay Systems ◽  
Process Industries ◽  
First Order

AbstractThe processes which contain at least one pole at the origin are known as integrating systems. The process output varies continuously with time at certain speed when they are disturbed from the equilibrium operating point by any environment disturbance/change in input conditions and thus they are considered as non-self-regulating. In most occasions this phenomenon is very disadvantageous and dangerous. Therefore it is always a challenging task to efficient control such kind of processes. Depending upon the number of poles present at the origin and also on the location of other poles in transfer function different types of integrating systems exist. Stable first order plus time delay systems with an integrator (FOPTDI), unstable first order plus time delay systems with an integrator (UFOPTDI), pure integrating plus time delay (PIPTD) systems and double integrating plus time delay (DIPTD) systems are the classifications of integrating systems. By using a well-controlled positioning stage the advances in micro and nano metrology are inevitable in order satisfy the need to maintain the product quality of miniaturized components. As proportional-integral-derivative (PID) controllers are very simple to tune, easy to understand and robust in control they are widely implemented in many of the chemical process industries. In industries this PID control is the most common control algorithm used and also this has been universally accepted in industrial control. In a wide range of operating conditions the popularity of PID controllers can be attributed partly to their robust performance and partly to their functional simplicity which allows engineers to operate them in a simple, straight forward manner. One of the accepted control algorithms by the process industries is the PID control. However, in order to accomplish high precision positioning performance and to build a robust controller tuning of the key parameters in a PID controller is most inevitable. Therefore, for PID controllers many tuning methods are proposed. the main factors that lead to lifetime reduction in gain loss of PID parameters are described in This paper and also the main methods used for gain tuning based on optimization approach analysis is reviewed. The advantages and disadvantages of each one are outlined and some future directions for research are analyzed.

Stabilizing Gain Regions of PID Controller for Time Delay Systems

2013 ◽  
Vol 313-314 ◽  
pp. 432-437
Author(s):  
Fu Min Peng ◽  
Bin Fang
Keyword(s):  
Stability Analysis ◽  
Time Delay ◽  
Pid Controller ◽  
Delay System ◽  
Nyquist Plot ◽  
Delay Systems ◽  
Time Delay Systems ◽  
Frequency Range ◽  
Time Delay System ◽  
Key Points

Based on the inverse Nyquist plot, this paper proposes a method to determine stabilizing gain regions of PID controller for time delay systems. According to the frequency characteristic of the inverse Nyquist plot, it is confirmed that the frequency range is used for stability analysis, and the abscissas of two kind key points are obtained in this range. PID gain is divided into several regions by abscissas of key points. Using an inference and two theorems presented in the paper, the stabilizing PID gain regions are determined by the number of intersections of the inverse Nyquist plot and the vertical line in the frequency range. This method is simple and convenient. It can solve the problem of getting the stabilizing gain regions of PID controller for time delay system.

An optimal PID controller via LQR for standard second order plus time delay systems

2016 ◽  
Vol 60 ◽  
pp. 244-253 ◽  
Author(s):  
Saurabh Srivastava ◽  
Anuraag Misra ◽  
S.K. Thakur ◽  
V.S. Pandit
Keyword(s):  
Time Delay ◽  
Pid Controller ◽  
Second Order ◽  
Delay Systems ◽  
Time Delay Systems

PID controller design in the frequency domain for time-delay systems using direct method

2016 ◽  
Vol 40 (3) ◽  
pp. 940-950 ◽  
Author(s):  
Noha Medhat Darwish
Keyword(s):  
Time Delay ◽  
Pid Controller ◽  
Controller Design ◽  
Reference Model ◽  
Direct Method ◽  
Delay Systems ◽  
Time Delay Systems ◽  
Delay Term ◽  
Linear Algebraic Equations ◽  
Pid Controller Design

In this paper, a proportional–integral–derivative (PID) controller design method for stable and integrating time-delay systems with and without non-minimum phase zero (inverse response) using the direct method is proposed. The PID controller gains are obtained by matching the frequency response of the closed-loop control system to that of the reference model with a minimum weighted integral squared absolute error in the bandwidth region. The reference model is chosen to satisfy the desired maximum sensitivity Ms. As a result, three linear algebraic equations in three unknowns are obtained and the solution of them gives the PID controller gains. The proposed method can be applied to low- and high-order systems, and the Pade approximation of the time-delay term e−Ls is not required.

GA tuned two degree of freedom PID controller for time delay systems

2018 ◽  
Vol 17 (1/2) ◽  
pp. 123
Author(s):  
P. Febina Beevi ◽  
T.K. Sunil Kumar ◽  
Jeevamma Jacob
Keyword(s):  
Time Delay ◽  
Pid Controller ◽  
Degree Of Freedom ◽  
Delay Systems ◽  
Time Delay Systems ◽  
Two Degree Of Freedom

scholarly journals Fractional-Order PID Controller Design for Time-Delay Systems Based on Modified Bode’s Ideal Transfer Function

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 103500-103510
Author(s):  
Nie Zhuo-Yun ◽  
Zheng Yi-Min ◽  
Wang Qing-Guo ◽  
Liu Rui-Juan ◽  
Xiang Lei-Jun
Keyword(s):  
Time Delay ◽  
Transfer Function ◽  
Pid Controller ◽  
Controller Design ◽  
Delay Systems ◽  
Time Delay Systems ◽  
Pid Controller Design ◽  
Bode’S Ideal Transfer Function ◽  
Fractional Order Pid ◽  
Fractional Order Pid Controller
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