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- Zairong Xi, Daizhan Cheng, Qiang Lu, Shengwei Mei
- Automatica
- 2002

- Yiguang Hong, Jiankui Wang, Zairong Xi
- IEEE Trans. Automat. Contr.
- 2005

This note considers finite time stabilization of uncertain chained form systems. The objective is to design a nonsmooth state feedback law such that the controlled chained form system is both Lyapunov stable and finite-time convergent within any given settling time. We propose a novel switching control strategy with help of homogeneity, time-rescaling, and… (More)

- Zairong Xi
- Int. J. Systems Science
- 2002

- Zairong Xi, Zhengtao Ding
- Automatica
- 2007

- Zairong Xi, Gang Feng, Zhong-Ping Jiang, Daizhan Cheng
- IEEE Trans. Automat. Contr.
- 2003

This note deals with chained form systems with strongly nonlinear unmodeled dynamics and external disturbances. The objective is to design a robust nonlinear state feedback law such that the closed-loop system is globally -exponentially stable. We propose a novel switching control strategy involving the use of input/state scaling and integrator… (More)

This paper deals with chained form systems with strongly nonlinear disturbances and drift terms. The objective is to design robust nonlinear output feedback laws such that the closed-loop systems are globally exponentially stable. The systematic strategy combines the input-state-scaling technique with the so-called backstepping procedure. A dynamic output… (More)

- Zairong Xi, Gang Feng, Daizhan Cheng, Qiang Lu
- IEEE Trans. Contr. Sys. Techn.
- 2003

In this paper, a multimachine power system is first represented as the generalized Hamiltonian control system with dissipation. Then, a decentralized saturated steam valving and excitation controller, which is staticly measurable, is proposed based on the Hamiltonian function method. Last, an example of threemachine power system is discussed in detail.

- Zairong Xi, Zhengtao Ding
- Int. J. Control
- 2008

- Wei Cui, Zairong Xi, Yu Pan
- Frontiers of Computer Science in China
- 2008

We investigate the decoherence control coupled to a rather general environment, i.e., without using the Markov approximation. Markovian errors generally require high-energy excitations (of the reservoir) and tend to destroy the scalability of the adiabatic quantum computation. Especially, we find that deriving optimal control using the Pontryagin maximum… (More)

- Wei Cui, Zairong Xi, Yu Pan
- CDC
- 2009

We propose a control approach to transfer the population between selected quantum states in the nonMarkovian open quantum system. This transfers, assisted by single qubit phase shift operations can generate universal logic gates for quantum computing. We find that the occupation probability behaves differently for different environmental conditions, such as… (More)