检索结果-内蒙古大学图书馆

-gain control on positive impulsive system via a hybrid proportional plus integral algorithm

IET Control Theory & Applications 2019年第7期13卷 898-904页

作者： Hao Chen Tao Zhan Qinzhen Huang College of Electrical and Information Engineering Southwest Minzu University Chengdu 610041 People's Republic of China Department of Applied Mathematics University of Waterloo Waterloo Ontario N2L 3G1 Canada School of Mathematics Shandong University Jinan Shandong 250100 People's Republic of China

In this study, the -gain control issues on positive system are investigated. A hybrid proportional impulsive with integral (PII) control scheme is proposed. This impulse-time-dependent control algorithm uses the proportional control action at impulse instants for stabilising, and applies the integral control strategy between impulse time intervals for improving the state convergence, respectively. The average impulsive interval approach and co-positive Lyapunov function method are employed to derive the sufficient conditions. Then -gain performance of the impulsive positive system can be guaranteed by solving the linear programming problem. In addition, iterative convex optimisation algorithm is presented for the design of PII control gain matrices. Numerical examples illustrate the expected results of this design.

关键词： Lyapunov methods matrix algebra gain control control system synthesis linear programming time-varying systems iterative methods convex programming stability impulse time intervals co-positive Lyapunov function method impulsive positive system iterative convex optimisation algorithm PII control gain matrices positive impulsive system hybrid proportional plus integral algorithm integral control scheme impulse-time-dependent control algorithm impulse instants impulsive interval approach integral control strategy 𝒦1 stability proportional control action Kp ℒ1 -gain control issues linear programming problem

来源：评论

学校读者我要写书评

暂无评论

A linear programming approach towards individuation lighting system with optimal energy consumption

引用

Materials Today: Proceedings 2019年 17卷 168-175页

作者： Chevikala Divya Namratha Pai Department of Electrical and Electronics Engineering MIT Manipal Academy of Higher Education Manipal 576104 India

Energy consumption is considered to be scope for wide range of research. This paper is an attempt to the process of energy conservation in the field of lighting science. A classroom with multiple locations and different combinations of four luminaires were considered for the study. linear programming problem is used to optimize the energy consumption with respect to illuminance at particular location. This study depicts the relation between energy consumption and number of luminaires at certain location considering individual satisfaction as a dynamic factor. Result shows the effectiveness of the methodology on light energy consumption satisfying individual preferred illuminance.

关键词： linear programming problem Energy conservation Individual preferred illuminance

来源：评论

学校读者我要写书评

暂无评论

Optimal Signal Timing for Multi-Phase Intersections

引用

IFAC-PapersOnLine 2018年第9期51卷 476-481页

作者： Mercader, Pedro Ornik, Melkior Gutman, Per-Olof Ioslovich, Ilya Technion - Israel Institute of Technology Haifa Israel University of Texas at Austin AustinTX United States

We present an optimal signal timing policy for multi-phase intersections. The policy is optimal in the sense of minimizing the increase in the number of queuing vehicles, i.e. maximizing throughput, within one signal cycle. By introducing weights in the optimality criterion, our solution also accommodates the setting of prioritized traffic, in which it is more important for certain classes of traffic to wait for a shorter time. The proposed signal timing policy is simple to compute and implement. In particular, we show that the proposed strategy can be computed as a solution to a linear programming problem. Additionally, upon parametrizing the proposed policy with respect to the vehicle queue lengths, we analyze some aspects of the multi-cycle behavior of the closed-loop system generated by the policy, most notably convergence of the queue lengths over time. Finally, we illustrate the proposed control law with two numerical examples, one of which is based on real data collected from an existing complex multi-phase intersection. © 2018

关键词： Traffic signals Closed loop systems linear programming Queueing theory Timing circuits Traffic control linear programming problem Optimal controls Optimal signals Optimality criteria Piecewise affine systems Prioritized traffics Road traffic Vehicle queues

来源：评论

学校读者我要写书评

暂无评论

A Hybrid Difference Scheme under Generalized Approximation Condition in the Space of Undetermined Coefficients

引用

COMPUTATIONAL MATHEMATICS AND MATHEMATICAL PHYSICS 2018年第8期58卷 1270-1279页

作者： Lobanov, A. I. Mirov, F. Kh. Moscow Inst Phys & Technol Dolgoprudnyi 141700 Moscow Oblast Russia

Construction of difference schemes of high approximation orders for hyperbolic problems is still an important problem. For the construction of grid-characteristic methods, difference schemes were earlier analyzed in the space of undetermined coefficients, where the coefficients of high order derivatives in the first differential approximation of the difference scheme were used as the objective function to be minimized. Other reasonable functionals in the space of undetermined coefficients that are linear in the coefficients of the scheme may be used. By solving a linear programming problem, difference schemes meeting various conditions can be chosen. An example of the linear functional related to the approximation properties of the problem is discussed. It is proposed to call it the generalized approximation condition. Based on this condition, a difference scheme of a novel class is built that has no analogs in the literature. The presentation uses the transport equation with a constant coefficient as an example.

关键词： linear transport equation difference scheme hybrid scheme linear programming problem complementary slackness conditions monotonic scheme Lagrange multipliers

来源：评论

学校读者我要写书评

暂无评论

Hardware-in-the-loop test for real-time economic control of a DC microgrid

引用

JOURNAL OF ENGINEERING-JOE 2019年第17期2019卷 4298-4303页

作者： Doroudchi, Elahe Feng, Xianyong Strank, Shannon Hebner, Robert E. Kyyra, Jorma Aalto Univ Helsinki Finland Univ Texas Austin Austin TX 78712 USA

Microgrids (MGs) utilising both renewables and energy storage to optimise onsite energy consumption rather than importing power form the utility grid, require a tertiary-level energy management system (EMS). The EMS must monitor and control the energy exchange within the nodes of MG to maximise any solar energy generation and benefit from installed storage. This paper considers a single-family house as the MG that has DC distribution circuit model. The look-ahead EMS is formulated as a linear programming problem, which has been tested in both offline simulation and hardware-in-the-loop (HIL) simulation environment. The simulation results indicate that the proposed look-ahead EMS can effectively reduce the DC MG operation cost without any operational constraint violation. In addition, the proposed look ahead energy optimisation approach has the potential to be used in a large-scale system such as a community MG with multiple buildings.

关键词： linear programming optimisation energy storage distributed power generation energy consumption energy management systems linear programming problem offline simulation simulation results look-ahead EMS DC MG operation cost energy optimisation approach large-scale system community MG hardware-in-the-loop test real-time economic control DC microgrid microgrids renewables energy storage onsite energy consumption power form utility grid tertiary-level energy management system energy exchange solar energy generation benefit installed storage single-family house DC distribution circuit model

来源：评论

学校读者我要写书评

暂无评论

Off-Grid Integrated Renewable Energy System Scheduling for an un-electrified remote area 8

Off-Grid Integrated Renewable Energy System Scheduling for a...

引用

8th IEEE Power India International Conference (PIICON)

作者： Pathak, Dixitkumar P. Khatod, Dheeraj Kumar Indian Inst Technol Roorkee Alternate Hydro Energy Ctr Roorkee 247667 Uttarakhand India Indian Inst Technol Roorkee Dept Elect Engn Roorkee 247667 Uttarakhand India

ISBN: (纸本)9781538673393

The optimum utilization of alternative sources of energy are allied with supply of electrical power to the elected area of customers underneath grid connected or standalone mode. An alternative source of energy supports the high reliability in on-site generation. Consequently, it is found many hybrid schemes all ready existence like micro wind turbine, SPV panels, Small hydro, Biomass energy and Biogas energy systems. Moreover integrated renewable energy system (IRES) is further effective in comparison to grid extension which is too expensive. The representation of IRES provides support to specific site which is located on the nearly accessible Non-conventional energy resources and load requirement. This article reveal that an optimal modeling of MHP, solar, bio-mass, wind and bio-gas energy scheme for un-electrified remote area in Gujarat. Considering this, the seven un-electrified clusters of villages in taluka, Limkheda and district, Dahod in Gujarat state have been selected as study region. The best possible daily scheduling approach for renewable energy sources (RES) like solar, wind, small hydro, biomass, and biogas system with using battery set storage system has been proposed in this paper. The proposed IRES model has been proposed that is more economical in terms of operating cost. The proposed model has been optimized using Primal- Dual Interior Point (PDIP) method in linear programming problem (LPP) technique. The proposed representation has been verified in MATLAB environment.

关键词： Hydro SPV Biomass Wind Biogas linear programming problem

来源：评论

学校读者我要写书评

暂无评论

A Study on Controlled Node Sized Network Clustering for Unweighted Network Data 10

A Study on Controlled Node Sized Network Clustering for Unwe...

引用

Joint 10th International Conference on Soft Computing and Intelligent Systems (SCIS) / 19th International Symposium on Advanced Intelligent Systems (ISIS)

作者： Nakano, Shusuke Hamasuna, Yukihiro Endo, Yasunori Kindai Univ Grad Sch Sci & Engn 3-4-1 Kowakae Higashiosaka Osaka 5778502 Japan Kindai Univ Sch Sci & Engn 3-4-1 Kowakae Higashiosaka Osaka 5778502 Japan Univ Tsukuba Fac Engn Info & Syst 1-1-1 Tennodai Tsukuba Ibaraki 3058573 Japan

ISBN: (纸本)9781538626337

The Louvain method is one of the typical network clusterings. It is well-known that the Louvain method obtains better cluster partition in a short time. However, there are several network data which are not obtained better cluster partition by the Louvain method. One of the reasons for the above is that the Louvain method focuses on an only edge connection. We proposed the method which focuses on node size. The proposed method optimizes the objective function of k-medoids by solving the linear programming problem under the constraints on node size. We verified the usefulness of the proposed method in the viewpoint of calculation time and accuracy with an artificial and benchmark unweighted network datasets. The numerical examples show that the proposed method is faster and obtains better cluster partition than the Louvain method. The Euclidean distance in adjacency matrix does not obtain better cluster partition for the datasets, which consist of terminal nodes or high degree nodes.

关键词： network clustering linear programming problem modularity k-medoids controlled size

来源：评论

学校读者我要写书评

暂无评论

Asynchronous l1 positive filter design for switched positive systems with overlapped detection delay

引用

IET CONTROL THEORY AND APPLICATIONS 2017年第3期11卷 319-328页

作者： Ren, Yu Er, Meng Joo Sun, Guanghui Harbin Inst Technol Res Inst Intelligent Control & Syst Harbin 150080 Peoples R China Nanyang Technol Univ Sch Elect & Elect Engn Singapore 639798 Singapore Wuhan Univ Sci & Technol Sch Machinery & Automat Wuhan 430081 Peoples R China

In this study, the asynchronous l positive filtering problem for a class of switched positive system with detection delay is investigated. The switched sequence satisfies modal-dwell-time (MDT) condition and the detection delay is both time-varying and allowed to be overlapped with each other. A new linear copositive Lyapunov function, which is time-dependent, mode-dependent and MDT-dependent, is constructed and the stability of the underlying filtering error system is established. Based on the established stability result, conditions guaranteeing the l stability of the corresponding filtering error system are further derived. The allowable total running time of the unmatched sub-filters is presented to be upper bounded by a linear combination of those running on matched sub-filters. An asynchronous positive filter with l disturbance suppression performance for the underlying switched positive system with overlapped detection delay is designed by solving a linear programming problem. The effectiveness of the proposed filter is illustrated by a numerical example.

关键词： delays switching systems (control) Lyapunov methods linear systems linear programming asynchronous (1) positive filter design switched positive systems overlapped detection delay switched sequence modal-dwell-time condition DT linear copositive Lyapunov function filtering error system unmatched subfilters linear combination linear programming problem

来源：评论

学校读者我要写书评

暂无评论

Decentralised stabilisation of positive fractional-order interconnected systems

引用

IET CONTROL THEORY AND APPLICATIONS 2017年第14期11卷 2391-2395页

作者： Le Van Hien Chu Trong Kinh Hanoi Natl Univ Educ Dept Math 136 Xuan Thuy Hanoi Vietnam Hanoi Pedag Univ Dept Math 2 Phuc Yen Vinhphuc Vietnam

This study addresses the stabilisation problem via decentralised controllers for continuous-time positive fractional-order (FO) interconnected systems. By virtue of the positivity, a necessary and sufficient condition is first derived for asymptotic stability of the interconnected closed-loop system. Then, necessary and sufficient conditions for designing a decentralised state-feedback controller are formulated in the form of a linear programming problem which can be effectively solved by using various convex optimisation algorithms. The effectiveness of the obtained theoretical results is demonstrated by a numerical example in positive FO circuits.

关键词： interconnected systems asymptotic stability continuous time systems closed loop systems state feedback linear programming convex programming decentralised control decentralised controllers decentralised stabilisation positive fractional-order interconnected systems continuous-time FO systems asymptotic stability closed-loop system state-feedback controller linear programming problem convex optimisation algorithms

来源：评论

学校读者我要写书评

暂无评论

Delay-dependent stability and stabilisation of two-dimensional positive Markov jump systems with delays

引用

IET CONTROL THEORY AND APPLICATIONS 2017年第10期11卷 1603-1610页

作者： Le Van Hien Hieu Trinh Deakin Univ Sch Engn Geelong Vic 3217 Australia Hanoi Natl Univ Educ Dept Math Hanoi Vietnam

This study considers the problem of exponential mean stability and stabilisation of two-dimensional positive Markov jump systems with delays. Necessary and sufficient delay-dependent conditions for exponential mean stability of the closed-loop system are first derived. Then, a design scheme based on a linear programming problem is proposed for obtaining parameters of a mode-dependent controller that makes the closed-loop system positive and exponentially mean stable. Finally, two numerical examples are presented to illustrate the effectiveness of the obtained results.

关键词： delays stochastic systems closed loop systems linear programming asymptotic stability Markov processes mode-dependent controller linear programming problem closed-loop system exponential mean stability Markov jump systems delay-dependent stability

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：