QI Guo-yuan, CHEN Zeng-qiang, Xue Wei, et al. A New Differential State Estimator and Controller for Nonlinear Stochastic System[J]. Acta Electronica Sinica, 2004, 32(4): 693-696.
QI Guo-yuan, CHEN Zeng-qiang, Xue Wei, et al. A New Differential State Estimator and Controller for Nonlinear Stochastic System[J]. Acta Electronica Sinica, 2004, 32(4): 693-696.DOI:
This paper presents a new differential state estimator
which does not rely on the model of the estimated system and has higher accuracy with a few parameters.Its parameters are distributed through root-locus and pole requirements.Stability and convergence of the estimator are proved.Frequency characteristic analysis shows its high quality filtering property. Further more
based on the estimator a high order differential feedback controller is designed
which does not rely on the model of the nonlinear system