Decentralized Control Approach Research Articles

Hierarchical Controlled Component Synthesis of Large Space Structures

This paper describes a new framework called Controlled Component Synthesis for the design of multi-level decentralized controllers for large flexible structures. In contrast to the existing decentralized control approach in which the design begins with a given dynamic model of the flexible structure, controlled components are built and assembled into a controlled flexible structure that meets performance specifications. A simple truss structural control problem is employed to illustrate the design procedures, as well as demonstrate the potentials of the developed method for controlling very large dimensional truss structures.

Decentralized multirate control

The objective of the study is to introduce a decentralized control approach to multirate linear systems. Each control channel is assigned a single sample rate, which provides simplicity in design of local controllers. This control strategy is natural for plants with widely different characteristic frequencies, and it is suitable for implementation using multiprocessor schemes. >

Transient Stabilization of Multimachine Power Systems by Variable Structure System Control

In this paper, the variable structure control system theory is applied to design the transient stability control law for multimachine power systems, which is a decentralized control approach where local controllers can guarantee the asymptotically stability of the system by obtaining and calculating subsystem's state information only. Furthefmore, we extend above approach to the case where the change of the system structure need not be known exactly, with known the changing range only.The proposed approaches are verified by a test power system, the simulating results show that those control approaches are effective.

New overlapped decentralized controller for large-scale systems

This paper is devoted to the development of a new decentralized control approach for large-scale interconnected dynamical systems. The proposed decentralized control structure is based on the concept of overlapping decomposition. The controller gains for the overlapped subsystems are calculated only once and they are easy to compute since all operations are carried out at the subsystems level. Since the proposed decentralized controller operates under a completely decentralized information pattern, the inaccessible states for each augmented subsystem are estimated using a set of overlapped decentralized estimators. A sufficient condition is developed for the stability of the global system with the decentralized control scheme subject to structural perturbations. It is shown that with the satisfaction of this condition, the proposed controller provides a robust design which is insensitive to structural perturbations.

Decentralized control approach to complex planning processes

Macroeconomic planning is considered as a multicriterial decision problem with respect to the controlled distribution of resources and national product. By overlapping decomposition possibilities for decentralized control approach to multicriterial decision making and control are studied. A general method of interactive multicritical decision is proposed.

A quantitative comparison between two decentralized control approaches

Abstract An overall evaluation of the computational efficiency of two decentralized optimal control approaches, namely, the non-singular perturbation and the hierarchical control approaches, is performed in order to provide the grounds for a quantitative comparison between them. The linear-quadratic regulator problem is adopted as the vehicle to conduct the comparative study. Major conclusions drawn from this comparison are the computational superiority, wide applicability and potential flexibility of the hierarchical control approach over the non-singular perturbation approach.