Bifurcation and control of a planktonic ecological system with double delays by delayed feedback control

2021 ◽  
Author(s):  
Zhichao Jiang ◽  
Yan Zhao ◽  
Xueli Bai ◽  
Zexian Zhang
Keyword(s):  
Feedback Control ◽  
Delayed Feedback ◽  
Ecological System ◽  
Delayed Feedback Control ◽  
And Control

scholarly journals Time-Delayed Feedback Control of Piezoelectric Elastic Beams under Superharmonic and Subharmonic Excitations

2019 ◽  
Vol 9 (8) ◽  
pp. 1557 ◽  
Author(s):  
Jian Peng ◽  
Mingjiao Xiang ◽  
Luxin Li ◽  
Hongxin Sun ◽  
Xiuyong Wang
Keyword(s):  
Feedback Control ◽  
Elastic Beam ◽  
Delayed Feedback ◽  
Subharmonic Resonance ◽  
Delayed Feedback Control ◽  
Feedback Gain ◽  
Control Gain ◽  
Resonance Response ◽  
And Control ◽  
Time Delayed Feedback

The time-delayed displacement feedback control is provided to restrain the superharmonic and subharmonic response of the elastic support beams. The nonlinear equations of the controlled elastic beam are obtained with the help of the Euler–Bernoulli beam principle and time-delayed feedback control strategy. Based on Galerkin method, the discrete nonlinear time-delayed equations are derived. Using the multiscale method, the first-order approximate solutions and stability conditions of three superharmonic and 1/3 subharmonic resonance response on controlled beams are derived. The influence of time-delayed parameters and control gain are obtained. The results show that the time-delayed displacement feedback control can effectively suppress the superharmonic and subharmonic resonance response. Selecting reasonably the time-delayed quantity and control gain can avoid the resonance region and unstable multi-solutions and improve the efficiency of the vibration control. Furthermore, with the purpose of suppressing the amplitude peak and governing the resonance stability, appropriate feedback gain and time delay are derived.

scholarly journals Delayed feedback control in quantum transport

2013 ◽  
Vol 371 (1999) ◽  
pp. 20120468 ◽  
Author(s):  
Clive Emary
Keyword(s):  
Feedback Control ◽  
Master Equation ◽  
Quantum State ◽  
Transport System ◽  
Quantum Transport ◽  
Delayed Feedback ◽  
The State ◽  
Delayed Feedback Control ◽  
Control Operation ◽  
And Control

Feedback control in quantum transport has been predicted to give rise to several interesting effects, among them quantum state stabilization and the realization of a mesoscopic Maxwell's daemon. These results were derived under the assumption that control operations on the system are affected instantaneously after the measurement of electronic jumps through it. In this contribution, I describe how to include a delay between detection and control operation in the master equation theory of feedback-controlled quantum transport. I investigate the consequences of delay for the state stabilization and Maxwell's daemon schemes. Furthermore, I describe how delay can be used as a tool to probe coherent oscillations of electrons within a transport system and how this formalism can be used to model finite detector bandwidth.

Giant Improvement of Time-Delayed Feedback Control by Spatio-Temporal Filtering

2002 ◽  
Vol 89 (7) ◽  
Author(s):  
Nilüfer Baba ◽  
Andreas Amann ◽  
Eckehard Schöll ◽  
Wolfram Just
Keyword(s):  
Feedback Control ◽  
Delayed Feedback ◽  
Delayed Feedback Control ◽  
Temporal Filtering ◽  
Spatio Temporal ◽  
Time Delayed Feedback

scholarly journals Time-delayed feedback control of diffusion in random walkers

2017 ◽  
Vol 96 (1) ◽  
Author(s):  
Hiroyasu Ando ◽  
Kohta Takehara ◽  
Miki U. Kobayashi
Keyword(s):  
Feedback Control ◽  
Delayed Feedback ◽  
Delayed Feedback Control ◽  
Random Walkers ◽  
Time Delayed Feedback
Sign in / Sign up

Export Citation Format

Share Document