Adaptive decentralized control with nonminimum-phase closed-loop channel zeros

2016 ◽  
Author(s):  
Syed Aseem Ul Islam ◽  
Yousaf Rahman ◽  
Dennis S. Bernstein
Keyword(s):  
Decentralized Control ◽  
Closed Loop ◽  
Nonminimum Phase ◽  
Loop Channel ◽  
Adaptive Decentralized Control

scholarly journals Adaptive Decentralized Control Scheme for a Stochastic Interconnected System

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Xiaoli Jiang ◽  
Siqi Liu ◽  
Mingyue Liu ◽  
Li Yang ◽  
Lina Liu
Keyword(s):  
State Feedback ◽  
Closed Loop ◽  
Reference Signal ◽  
Network Control ◽  
Neural Network Control ◽  
Neural Structure ◽  
Interconnected System ◽  
Feedback Scheme ◽  
Control Scheme ◽  
Adaptive Decentralized Control

This work investigates a decentralized state feedback scheme of neural network control for an interconnected system. The completely unknown associated terms are estimated directly by the neural structure. A modified approach is proposed to deal with the state feedback format. By combining the Lyapunov function and backstepping technology together, an adaptive decentralized controller is established, and we can construct the boundedness of all signals in the closed-loop structure through the controller, which can drive the formation of a given reference signal. In the end, the effectiveness of the presented strategy is referred to a simulation example.

scholarly journals Optimal and Decentralized Control Strategies for Inverter-Based AC Microgrids

Energies ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3529 ◽  
Author(s):  
Michael D. Cook ◽  
Eddy H. Trinklein ◽  
Gordon G. Parker ◽  
Rush D. Robinett ◽  
Wayne W. Weaver
Keyword(s):  
Decentralized Control ◽  
Closed Loop ◽  
Exergy Analysis ◽  
Control Strategies ◽  
Distributed Storage ◽  
Droop Control ◽  
Exergy Destruction ◽  
High Penetration ◽  
Feedforward Controller ◽  
Fully Connected

This paper presents two control strategies: (i) An optimal exergy destruction (OXD) controller and (ii) a decentralized power apportionment (DPA) controller. The OXD controller is an analytical, closed-loop optimal feedforward controller developed utilizing exergy analysis to minimize exergy destruction in an AC inverter microgrid. The OXD controller requires a star or fully connected topology, whereas the DPA operates with no communication among the inverters. The DPA presents a viable alternative to conventional P − ω / Q − V droop control, and does not suffer from fluctuations in bus frequency or steady-state voltage while taking advantage of distributed storage assets necessary for the high penetration of renewable sources. The performances of OXD-, DPA-, and P − ω / Q − V droop-controlled microgrids are compared by simulation.

Dynamic Analysis of Noncollocated Flexible Arms and Design of Torque Transmission Mechanisms

1994 ◽  
Vol 116 (2) ◽  
pp. 201-207 ◽  
Author(s):  
Jahng-Hyon Park ◽  
Haruhiko Asada
Keyword(s):  
Closed Loop ◽  
Open Loop ◽  
Design Guidelines ◽  
Phase System ◽  
Nonminimum Phase ◽  
Transmission Mechanisms ◽  
Flexible Arm ◽  
Torque Transmission ◽  
Endpoint Control ◽  
Flexible Arms

A new actuation method for one-link flexible arms is presented. The endpoint control of a flexible arm has been known as a nonminimum phase system due to the noncollocated sensor and actuator. By relocating the actuator near the endpoint, the system can be modified to approximate a minimum phase system. In order to implement this, transmission mechanisms are developed which transform the actuator torque to a combination of force and torque and transmit them to an appropriate point on the arm link. Exact pole-zero configurations are analyzed with regard to the location of the actuation point and the type of actuator used. Guidelines for design of the transmission mechanisms and the actuation points are developed with respect to the operation bandwidth, stability and controllability. A prototype flexible arm is designed based on the design guidelines and open-loop and closed-loop tests are performed to verify the effectiveness.

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