Active mass damper system employing time delay control algorithm for vibration mitigation of building structure

2013 ◽  
Author(s):  
Dong-Doo Jang ◽  
Jeongsu Park ◽  
Hyung-Jo Jung
Keyword(s):  
Time Delay ◽  
Control Algorithm ◽  
Building Structure ◽  
Vibration Mitigation ◽  
Active Mass ◽  
Time Delay Control ◽  
Mass Damper ◽  
Delay Control ◽  
Active Mass Damper

scholarly journals Robust-adaptive dynamic programming-based time-delay control of autonomous ships under stochastic disturbances using an actor-critic learning algorithm

2021 ◽  
Author(s):  
Hossein Nejatbakhsh Esfahani ◽  
Rafal Szlapczynski
Keyword(s):  
Dynamic Programming ◽  
Time Delay ◽  
Control Algorithm ◽  
Approximate Dynamic Programming ◽  
Robust Adaptive Control ◽  
Stochastic Disturbances ◽  
Time Delay Control ◽  
Model Free ◽  
Delay Control ◽  
Robust Adaptive

AbstractThis paper proposes a hybrid robust-adaptive learning-based control scheme based on Approximate Dynamic Programming (ADP) for the tracking control of autonomous ship maneuvering. We adopt a Time-Delay Control (TDC) approach, which is known as a simple, practical, model free and roughly robust strategy, combined with an Actor-Critic Approximate Dynamic Programming (ACADP) algorithm as an adaptive part in the proposed hybrid control algorithm. Based on this integration, Actor-Critic Time-Delay Control (AC-TDC) is proposed. It offers a high-performance robust-adaptive control approach for path following of autonomous ships under deterministic and stochastic disturbances induced by the winds, waves, and ocean currents. Computer simulations have been conducted under two different conditions in terms of the deterministic and stochastic disturbances and all simulation results indicate an acceptable performance in tracking of paths for the proposed control algorithm in comparison with the conventional TDC approach.

A time-delay control algorithm for an industrial electric heater

1993 ◽  
Vol 3 (4) ◽  
pp. 219-224 ◽  
Author(s):  
Jian Chu ◽  
Hongye Su ◽  
Xiehe Hu
Keyword(s):  
Time Delay ◽  
Control Algorithm ◽  
Electric Heater ◽  
Time Delay Control ◽  
Delay Control

Building Vibration Control by Active Mass Damper With Delayed Acceleration Feedback: Multi-Objective Optimal Design and Experimental Validation

2018 ◽  
Vol 140 (4) ◽  
Author(s):  
Yuan-Guang Zheng ◽  
Jing-Wen Huang ◽  
Ya-Hui Sun ◽  
Jian-Qiao Sun
Keyword(s):  
Time Delay ◽  
Vibration Control ◽  
Stable Region ◽  
Numerical Code ◽  
Total Power ◽  
Active Mass ◽  
Multi Objective ◽  
Mass Damper ◽  
Active Mass Damper ◽  
Acceleration Feedback

The building structural vibration control by an active mass damper (AMD) with delayed acceleration feedback is studied. The control is designed with a multi-objective optimal approach. The stable region in a parameter space of the control gain and time delay is obtained by using the method of stability switch and the numerical code of NDDEBIFTOOL. The control objectives include the setting time, total power consumption, peak time, and the maximum power. The multi-objective optimization problem (MOP) for the control design is solved with the simple cell mapping (SCM) method. The Pareto set and Pareto front are found to consist of two clusters. The first cluster has negative feedback gains, i.e., the positive acceleration feedback. We have shown that a proper time delay can enhance the vibration suppression with controls from the first cluster. The second cluster has positive feedback gains and is located in the region which is sensitive to time delay. A small time delay will deteriorate the control performance in this cluster. Numerical simulations and experiments are carried out to demonstrate the analytical findings.

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