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1. A closed-loop system constantly recycles the same materials over and over again, just as Bio2 does or a space capsule should.

2. This controller not only can make the closed-loop system quadratically stable but also can make the norm of the closed-loop system less than a given bound.

3. In the closed-loop system, even if external disturbances and model uncertainties exist, precise attitude control can still be accomplished.

4. Simulation results show that, in the closed-loop system, precise attitude control is accomplished in spite of the uncertainties and external disturbances in the system.

5. By using this method, the closed-loop system not only keeps integrity but also is robust stable in given disk area for all admission parameter uncertainties when sensor faults occur.

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6. With the application of mixed position closed-loop system in the high-speed precise laser sub-marker, the response has been increased greatly and constant error has been decreased.

7. Sufficient conditions for stabilization of the closed-loop system are derived by constructing proper Lyapunov functionals .

8. In this paper, the mathematical models of open loop system and feedback closed-loop system of a micro feed servo system using magnet are studied.

9. Using this extended quadratic optimization theorem, the necessary and sufficient condition for the existence of stable quadratic optimal closed-loop system is obtained.

10. It was proved that the tracking error converges to the prescribed boundary layer and all the signals in the closed-loop system were bounded .

11. Simulation results show that this method can suppress the vibration of this flexible plate and improve closed-loop system robustness effectively.

12. By Lyapunov candidate function method, this paper concludes that the closed-loop system is globally uniformly asymptotically stable at origin.

13. It is proved that the proposed method can not only guarantee the stability of the closed-loop system, but also make the tracking error converge to the origin or its small neighborhood.

14. According to auto-control theoretic, dead band is one of the popular nonlinearity phenomena in a closed-loop system which arose from the feedback channels with disproportion feedback coefficient.

15. Moreover, the parameters of state transfer matrix and controllability matrix of the closed-loop system are computed when solving the Riccati equation.

16. A model for this kind of differential capacitance detection circuit was established to analyze the system errors and the effect of the system parameters on the closed-loop system.

17. The length of laser resonate cavity was changed by high voltage amplifier to compensate frequency drift so that to obtain closed-loop system.

18. Using this virtual instrument, the frequency characteristics of both open-loop system and closed-loop system can be measured.

19. Stimulating the NC system with the M-sequence signal produced by computer and sampling its output data, this method identifies the model of the closed-loop system with the Least Square Estimation.

20. Lyapunov stability theory is used in this paper to establish the stability of the closed-loop system after using closed-coupled valve, and SIMULINK is used to simulate the whole system.

21. Internal model control is proposed for the compounded pseudo-linear system. The robust stability of the closed-loop system with modeling errors is analysed.

22. It is proved that globally asymptotical stability and convergence of the resulting closed-loop system are guaranteed by the range of the prediction horizon.

23. With double-loop controller, the effect of flexibility coefficient on stability region of closed-loop system is analyzed.

24. The simulation results show that the system output can track the desired output exponentially and all states of the closed-loop system are uniformly ultimately bounded.

25. Based on the linear matrix inequality and adaptive approach, a state feedback adaptive controller is designed, which make the closed-loop system is asymptotically stable.

26. Based on the estimation of a controlled plant's transfer function model, a method for the self-tuning of PID controllers in closed-loop system is proposed.

27. In order to speed up the simulation process, has established the SG1524B chip behavior model according to the switching power controller behavior in closed-loop system.

28. The authors begin with some intrinsic characteristics of the closed-loop system, e. g. , overshoot and undershoot , on account of open-loop unstable poles and zeros. Then, a controller is designed.

29. In this paper, a tree-shaped network of strings equipped with velocity feedback controllers is considered, and the exponential stability of the closed-loop system is obtained.