The Lifting Technique for Sampled-data Systems:Useful or Useless?
Wang Guang · Acta Automatica Sinica · 2005
The lifting technique is now a well recognized tool for H_∞ design and analysis of sampled- data systems.However,the efficiency of the method depends on the structure of the problem.The structure of the H_∞ sensitivity problem is analyzed in this paper.And the constraints on the H_∞-optimization problem and on the design parameters in lifting design are also discussed.Under such constraints the resulting performance from the design is generally low.Therefore,the lifting technique can not be recommended as a synthesis tool for the sampled-data systems.An example is also given in the paper.