[1] [1] GUARDABASSI G.Virtual reference direct method:An off-line approach to data-based control system design［J］.IEEE Transactions of Automatic Control 2002 45(5):954-960.

[2] [2] CAMPI M C.Virtual reference feedback tuning:A direct method for the design of feedback controlllers［J］.Automatica 2002 38(4):1337-1346.

[3] [3] CAMPI M C LECHINI A.An application of the virtual reference feedback tuning method to a benchmark problem［J］.European Journal of Control 2003 9(2):66-76.

[4] [4] CAMPI M C.Direct nonlinear control design:The virtual reference feedback tuning approach［J］.IEEE Transactions of Automatic Control 2006 51(1):14-27.

[5] [5] TANG D Z WANG D B WANG J H.Virtual reference feedback tuning control design for closed-loop systems［J］.Journal of Huazhong University Science and Technology: Natural Science Edition 2011 39(2):48-52.

[6] [6] LJUNG L.Theory and practice of recursive identification ［M］.Cambridge:The MIT Press 1983.

[7] [7] BOYD S VANDENBERGHE L.Convex optimization［M］.UK:Cambridge University Press, 2008.

[8] [8] JAKOB K.A design algorithm using external perturbation to improve iterative feedback tuning convergence［J］.Automatica 2011 47(2):2665-2670.

[9] [9] HILDERBRAND R.Prefiltering in iterative feedback tuning:Optimization of the prefilter for accuracy［J］.IEEE Transactions of Automatic Control 2004 49(8):1801-1805.

[10] [10] WANG J H.Research on control strategies based on advanced identification and their application［D］.Nanjing:Nanjing University of Aeronautics and Astronautics 2011.

[11] [11] BOYD S VANDENBERGHE L.Convex optimization［M］.UK:Cambridge University Press 2008.