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In this paper, the synchronization problem is studied for complex networks under impulsive control with packet loss. At some impulsive instant, if the control packet from the controller to the actuator is lost, then we assume that the impulsive strength is zero. By using the comparison principle, a sufficient condition is derived to guarantee that exponential synchronization of complex networks is...
Cooperative guidance for multiple flight vehicles against single moving target is studied in this paper. Two finite-time consensus protocols are developed for multi-agent system with input saturation which underlay the design of cooperative guidance law. The cooperative guidance approaches are investigated to solve the many-to-one interception problem, where two novel guidance laws considering the...
In this paper, the reliable control problem is studied for a class of discrete linear Markovian jump singular systems with actuator failures. A more practical model of actuator failures than outage is considered. It is important that the transition probabilities of the jumping process are assumed to be partly unknown. The failures of actuator are quantified by a variable taking values in a given interval...
This paper considers decentralized reliable control for networked interconnected system. By considering synthesis effects of transmission delay, packet dropout and random actuators' faults, new kind of interconnected system model is proposed. In order to reduce the packet transmission, decentralized event triggering scheme is proposed. Using the proposed scheme and using Lyapunov-Krasovskii method,...
In this paper, robust actuator fault reconstruction for satellite attitude control systems (ACSs) in the presence of space environmental disturbances and actuator faults is investigated via a learning observer (LO). First, a nonlinear mathematical model of the satellite ACS satisfying Lipschitz constraint is established; then an LO is constructed to achieve robust reconstruction of satellite attitude...
A nonlinear control allocation scheme is developed using hybrid optimization algorithm. To achieve nonlinear control allocation results, a hybrid optimization algorithm is presented in which the ant colony algorithm and differential evolution algorithm are employed. The nonlinear control allocation problem is divided into two optimal problems which are selecting optimal truncation point combination...
This paper is concerned with networked predictive controller design and stability analysis of the networked predictive control system. A new networked predictive control method based on linear interpolation is proposed. Compared with the networked predictive control method in the literature, the proposed method can reduce the size of the data packet significantly. The closed-loop system is converted...
This paper considers the problem of stabilization bound of the discrete singularly perturbed system (SPSs), which is subject to actuator saturation. An approach to design a state feedback controller which can stabilize the discrete SPSs is proposed. A method to estimate the basin of attraction is constructed. In order to reduce the conservatism of the estimation of the basin of attraction, a convex...
This paper studies the stabilization for networked control systems with medium access constraint via controller and protocol co-design. The closed-loop networked control system is modeled as a discrete-time switched system. Sufficient conditions are presented for the exponential stability of the closed-loop networked control system by the average dwell time method. Based on the conditions, stabilizing...
A quick and precise clutch pressure control is essential for a good gearshift. In this paper, firstly a control-oriented nonlinear model of Proportional Pressure Solenoid Valve (PPSV), the electro-hydraulic actuator of clutches in Dual Clutch Transmission(DCT) is established and then the triple-step method is proposed to control the output pressure of PPSV. The control objective is to make the output...
This paper presents a method of designing robust H∞ reliable controllers for a class of Lipschitz nonlinear delay switched systems. External disturbances and parameter uncertainties in the systems are assumed that they are unknown time-varying and norm-bounded. When faults exist on actuators, robust H∞ reliable controllers are proposed by using Lyapunov stability theory and dwell time approach so...
In this paper, the attitude control for rapid maneuvers with Rodrigues parameters representation is addressed. We consider the bounded finite-time stability problem by using a combing control strategy. Considering the efficiency of control and disturbance effect, a constrained domain is designed, based on which a combined control law is proposed for the rapid maneuvering task. Finally, a simulation...
This paper is concerned with the finite-time stabilization for a class of linear systems subject to actuator fault using limited information. A sufficient condition is derived which reveals the relationship among the sampling period, the norm of the transition matrix of the open-loop system over one sampling period, the input matrix, the feedback gain and the vertex set of the actuator fault to achieve...
This article deals with torque allocation for multi-reaction wheel in spacecraft. First of all, an energy-based optimal allocation strategy is derived under the constraints of reaction wheel maximum output torque. Secondly, to address the shortened life time problem which results from too large torque output of some specific reaction wheel in energy-based optimal allocation strategy, the concept of...
The set invariance problem is discussed for actuator saturation uncertain systems with disturbance. Under the linear state feedback control, the new condition of invariance ellipsoid is given for the addressed systems. By using composite quadratic Lyapunov function method and combining the convex additivity of linear matrix, it is shown that the convex hull of some invariant ellipsoids is also an...
Spacecraft micro-vibration is still an important issue that influences space remote-sensing resolution and satellite laser communication pointing precision. As its favorable low frequency oscillation suppression performance, active vibration control becomes a main research direction in the micro-vibration abatement. This paper adopts magnetic suspension vibration isolation control method to construct...
This paper deals with H∞ controller design problem for event-triggered networked control systems (NCSs), where the next task release time and finishing time are predicted based on the sampled states. A new model of NCSs that involves the network conditions, state and event-triggered communication strategy is proposed. Based on this model, some novel criteria for the asymptotic stability analysis and...
Reliable control problems for T-S fuzzy systems with sensor faults are studied in this paper. For a class of fuzzy systems, the premise variables of which are dependent on the system states, a type of new conditions for designing fuzzy reliable controllers are proposed by applying the properties of product inference engines. In contrast to the existing approach, the new conditions are with less conservatism...
The quaternion-based, high precision, large angle rapid reorientation of rigid spacecraft is the main problem investigated in this study. The operation is accomplished via a hybrid thrusters and reaction wheels strategy where thrusters are engaged in providing a primary maneuver torque in open loop, while reaction wheels provide fine control torque to achieve high precision in closed-loop control...
This paper addresses the robust stabilization problem for a class of cascade nonlinear switched systems subject to input saturation under asynchronous switching. Convex hull skills are utilized in order to deal with input saturation. A state feedback controller is proposed under the dwell time such that the resulting closed-loop system is exponentially robust stable.
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