检索结果-南通市图书馆

Optimal switching policy for performance enhancement of distributed parameter systems based on event-driven control

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2014年第7期23卷 211-217页

作者：穆文英崔宝同楼旭阳李纹 key laboratory of advanced process control for light industry (ministry of education) Jiangnan University

This paper aims to improve the performance of a class of distributed parameter systems for the optimal switching of actuators and controllers based on event-driven control. It is assumed that in the available multiple actuators, only one actuator can receive the control signal and be activated over an unfixed time interval, and the other actuators keep dormant. After incorporating a state observer into the event generator, the event-driven control loop and the minimum inter-event time are ultimately bounded. Based on the event-driven state feedback control, the time intervals of unfixed length can be obtained. The optimal switching policy is based on finite horizon linear quadratic optimal control at the beginning of each time subinterval. A simulation example demonstrate the effectiveness of the proposed policy.

关键词： distributed parameter systems optimal switching policy event-driven

Consensus Problem of Heterogeneous Multi-agent Systems with Time Delay under Fixed and Switching Topologies

在线全文

学校读者我要写书评

暂无评论

International Journal of Automation and computing 2014年第3期11卷 340-346页

作者： Ping-Ping Dai Cheng-Lin Liu Fei Liu key laboratory of advanced process control for light industry (ministry of education) Jiangnan University

Consensus problem is investigated for heterogeneous multi-agent systems composed of first-order agents and second-order agents in this paper. Leader-following consensus protocol is adopted to solve consensus problem of heterogeneous multi-agent systems with time-varying communication and input delays. By constructing Lyapunov-Krasovkii functional, sufficient consensus conditions in linear matrix inequality(LMI) form are obtained for the system under fixed interconnection topology. Moreover, consensus conditions are also obtained for the heterogeneous systems under switching topologies with time delays. Simulation examples are given to illustrate effectiveness of the results.

关键词： Consensus problem heterogeneous multi-agent systems switching topologies communication delay input delay.

A Fusion Kalman Filter and UFIR Estimator Using the Influence Function Method

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2022年第4期9卷 709-718页

作者： Wei Xue Xiaoli Luan Shunyi Zhao Fei Liu IEEE the key laboratory of advanced process control for light industry(ministry of education) Institute of AutomationJiangnan University

In this paper,the Kalman filter(KF)and the unbiased finite impulse response(UFIR)filter are fused in the discrete-time state-space to improve robustness against *** avoid the problem where fusion filters may give up some advantages of UFIR filters by fusing based on noise statistics,we attempt to find a way to fuse without using noise *** fusion filtering algorithm is derived using the influence function that provides a quantified measure for disturbances on the resulting filtering outputs and is termed as an influence finite impulse response(IFIR)*** main advantage of the proposed method is that the noise statistics of process noise and measurement noise are no longer required in the fusion process,showing that a critical feature of the UFIR filter is *** numerical example and a practice-oriented case are given to illustrate the effectiveness of the proposed *** is shown that the IFIR filter has adaptive performance and can automatically switch from the Kalman estimate to the UFIR estimates according to operating ***,the proposed method can reduce the effects of optimal horizon length on the UFIR estimate and can give the state estimates of best accuracy among all the compared methods.

关键词： Fusion filter influence function Kalman filter(KF) robustness unbiased finite impulse response(FIR)

Improved control for distributed parameter systems with time-dependent spatial domains utilizing mobile sensor-actuator networks

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2017年第9期26卷 7-16页

作者：张建中崔宝同庄波 key laboratory of advanced process control for light industry(ministry of education)jiangnan University Wuxi 214122China

A guidance policy for controller performance enhancement utilizing mobile sensor-actuator networks （MSANs） is proposed for a class of distributed parameter systems （DPSs）, which are governed by diffusion partial differential equations （PDEs） with time-dependent spatial domains. Several sufficient conditions for controller performance enhancement are presented. First, the infinite dimensional operator theory is used to derive an abstract evolution equation of the systems under some rational assumptions on the operators, and a static output feedback controller is designed to control the spatial process. Then, based on Lyapunov stability arguments, guidance policies for collocated and non-collocated MSANs are provided to enhance the performance of the proposed controller, which show that the time-dependent characteristic of the spatial domains can significantly affect the design of the mobile scheme. Finally, a simulation example illustrates the effectiveness of the proposed policy.

关键词： distributed parameter systems time-dependent spatial domains mobile actuator-sensor networks,Lyapunov stability

State-dependent event-triggered control of multi-agent systems

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2014年第11期23卷 215-222页

作者：齐斌崔宝同楼旭阳 key laboratory of advanced process control for light industry (ministry of education) Jiangnan University Wuxi Institute of Technology

Event-triggered control has been recent/y proposed as an effective strategy for the consensus of multi-agent systems. We present an improved distributed event-triggered control scheme that remedies a shortcoming of some previous event- triggered control schemes in the literature. This improved distributed event-triggered method has no need for continuously monitoring each agent＇ neighbors. Moreover, each agent in the multi-agent systems will not exhibit the Zeno behavior. Numerical simulation results show the effectiveness of the proposed consensus control.

关键词： distributed event-triggered control consensus rendezvous multi-agent systems

Iterative Learning Fault Diagnosis Algorithm for Non-uniform Sampling Hybrid System

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2017年第3期4卷 534-542页

作者： Hongfeng Tao Dapeng Chen Huizhong Yang key laboratory of advanced process control for light industry(ministry of education) Jiangnan UniversityWuxi 214122China

For a class of non-uniform output sampling hybrid system with actuator faults and bounded disturbances,an iterative learning fault diagnosis algorithm is ***,in order to measure the impact of fault on system between every consecutive output sampling instants,the actual fault function is transformed to obtain an equivalent fault model by using the integral mean value theorem,then the non-uniform sampling hybrid system is converted to continuous systems with timevarying delay based on the output delay ***,an observer-based fault diagnosis filter with virtual fault is designed to estimate the equivalent fault,and the iterative learning regulation algorithm is chosen to update the virtual fault repeatedly to make it approximate the actual equivalent fault after some iterative learning trials,so the algorithm can detect and estimate the system faults *** results of an electro-mechanical control system model with different types of faults illustrate the feasibility and effectiveness of this algorithm.

关键词： Equivalent fault model fault diagnosis iterative learning algorithm non-uniform sampling hybrid system virtual fault

Distributed event-triggered consensus tracking of second-order multi-agent systems with a virtual leader

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2016年第5期25卷 487-492页

作者：曹劼吴治海彭力 key laboratory of advanced process control for light industry of the ministry of education School of Internet of Things Engineering Jiangnan University

This paper investigates the consensus tracking problems of second-order multi-agent systems with a virtual leader via event-triggered control. A novel distributed event-triggered transmission scheme is proposed, which is intermittently examined at constant sampling instants. Only partial neighbor information and local measurements are required for event detection. Then the corresponding event-triggered consensus tracking protocol is presented to guarantee second-order multi-agent systems to achieve consensus tracking. Numerical simulations are given to illustrate the effectiveness of the proposed strategy.

关键词： consensus tracking event-triggered control sampled-data second-order multi-agent systems

Consensus of heterogeneous multi-agent systems based on sampled data with a small sampling delay

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2014年第10期23卷 617-625页

作者：王娜吴治海彭力 key laboratory for advanced process control of light industry of the ministry of education School of Internet of Things Engineering Jiangnan University

In this paper, consensus problems of heterogeneous multi-agent systems based on sampled data with a small sampling delay are considered. First, a consensus protocol based on sampled data with a small sampling delay for heterogeneous multi-agent systems is proposed. Then, the algebra graph theory, the matrix method, the stability theory of linear systems, and some other techniques are employed to derive the necessary and sufficient conditions guaranteeing heterogeneous multi-agent systems to asymptotically achieve the stationary consensus. Finally, simulations are performed to demonstrate the correctness of the theoretical results.

关键词： heterogeneous multi-agent systems consensus sampled-data small sampling delay

Dynamical Consensus Algorithm for Second-Order Multi-Agent Systems Subjected to Communication Delay

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2013年第6期59卷 773-781页

作者：刘成林刘飞 key laboratory of advanced process control for light industry (ministry of education) Institute of AutomationJiangnan University

To solve the dynamical consensus problem of second-order multi-agent systems with communication delay,delay-dependent compensations are added into the normal asynchronously-coupled consensus algorithm so as to make the agents achieve a dynamical consensus. Based on frequency-domain analysis, sufficient conditions are gained for second-order multi-agent systems with communication delay under leaderless and leader-following consensus algorithms respectively. Simulation illustrates the correctness of the results.

关键词： dynamical consensus second-order multi-agent systems communication delay delay-dependentcompensation