Journal of Applied Sciences ›› 2014, Vol. 32 ›› Issue (6): 652-660.doi: 10.3969/j.issn.0255-8297.2014.06.016

• Control and System • Previous Articles    

Dual Decomposition in Subspace Predictive Control under Fault Condition

WANG Jian-hong1, XU Ying1, XIONG Zhao-hua1, XU Bo2   

  1. 1. The 28th Research Institute, China Electronics Technology Group Corporation, Nanjing 210007, China
    2. College of Astronomy and Space Science, Nanjing University, Nanjing 210093, China
  • Received:2013-11-24 Revised:2014-05-12 Online:2014-11-28 Published:2014-05-12

Abstract: This paper studies design of controllers in subspace predictive control structure under faulty conditions.
Having derived the output predictive estimations, statistic distribution of the residual and the expression
are analyzed. To optimize the prediction controller with equalities and inequalities, dual decomposition is used
to convert the former constrained optimization into unconstrained optimization. The incremental proximal
method is applied to solve the primal-dual optimization problem. With a helicopter as an example, effectiveness
of the proposed control strategy is verified.

Key words: fault, subspace predictive control, dual decomposition, regularization term

CLC Number: