Scheduled System Maintenance on May 29th, 2015:
IEEE Xplore will be upgraded between 11:00 AM and 10:00 PM EDT. During this time there may be intermittent impact on performance. We apologize for any inconvenience.
By Topic

Improved condition for the optimality of decentralised control for large-scale systems

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Yang, T.-C. ; Univ. of Manchester Inst. of Sci. & Technol., UK ; Munro, N. ; Brameller, A.

For a linear constant large-scale system composed for interconnected subsystems, if a decentralised control law which minimises a quadratic cost function with respect to individual decoupled subsystems is used, this simple control strategy is shown to result in a globally optimal interconnected system, provided the condition given by M. Ikeda and D.D. Siljak (1982) is satisfied and the quadratic cost function is modified to include the additional terms arising from the subsystem interactions. An improved condition for the global optimality is given, which implies that, as long as a local eigenvalue condition given in the paper is satisfied for the decentralised local optimal control and the global detectability condition is satisfied, global optimality can also be ensured. It can be expected that, owing to this new simple condition, some of the difficulties in the application of decentralised optimal control approaches could be overcome.

Published in:

Control Theory and Applications, IEE Proceedings D  (Volume:136 ,  Issue: 1 )