With the aim of increasing momentum jet and obtaining better environmental adaptability, this study designs a new type actuator combining sparkjet combustion-driven actuator. Numerical simulation shows that has higher velocity mass rate compared to when length orifice diameter are 6.5 mm 1.3 mm, respectively, while saturation work frequency is almost same. A parameter as volume increases, press...

This paper investigates the problem of stabilization of time delay linear singular systems subject to actuator saturation. A polytopic approach is used to describe the saturation behavior. By using an augmented Lyaponuv-Krasovskii functional and adopting the delay partitioning technique, less conservative sufficient conditions are established to ensure the closed loop system to be locally admis...

For a class of linear dynamical systems with unknown parameters a direct model reference adaptive control framework is developed that provides stable adaptation in the presence of input constraints. The proposed design methodology, termed “positive μ-modification”, protects the control law from actuator position saturation. Moreover, the design is Lyapunov based and ensures global asymptotic tr...

For a class of nonlinear systems with input saturation, a kind of adaptive fuzzy control law based on multiple-model structure is presented in this paper. First, a basic fuzzy controller is designed with adaptive weight parameters determined by multiplemodel switching performance indexes. Then a dynamic structure adaptive neural network is introduced for ensuring the system stable, while the co...

The technique of input shaping has recently been successfully applied to the problem of maneuvering exible structures without excessive residual vibration. In the method of input shaping, positive impulses are often desired because they can be used with any arbitrary (un-shaped) commands and do not cause actuator saturation (if these original unshaped commands do not cause ac-tuator saturation)...

Reduced-order, multiobjective optimal controllers are developed for the Notre Dame structural control building model benchmark. Standard H 2 /LQG optimal control excels at noise and disturbance rejection, but may have difficulty with actuator saturation and plant uncertainty. The benchmark problem is adapted to a multiobjective optimal control framework, using l 1 and H ∞ constraints to improve...

3001 convex hull of a group of ellipsoids, instead of a single ellipsoid that would have resulted from the use of a single Lyapunov function. A numerical example was worked out to illustrate the results obtained in the technical note. REFERENCES [1] K. J. Astrom and L. Rundqwist, " Integrator windup and how to avoid it, " in Proc. An antiwindup approach to enlarging domain of attraction for lin...

of Dissertation Presented to the Graduate School of the University of Florida in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy LYAPUNOV-BASED CONTROL OF SATURATED AND TIME-DELAYED NONLINEAR SYSTEMS By Nicholas Fischer December 2012 Chair: Warren E. Dixon Major: Mechanical Engineering Time delays and actuator saturation are two phenomena which affect the performa...