检索结果-内蒙古大学图书馆

IEEE-Power-and-Energy-Society General Meeting (PESGM)

作者： Qiu, Yiwei Lin, Jin Liu, Feng Song, Yonghua Tsinghua Univ Dept Elect Engn State Key Lab Control & Simulat Power Syst & Gene Beijing 100084 Peoples R China Univ Macau Dept Elect & Comp Engn Macau 999078 Peoples R China

ISBN: (纸本)9781728119816

Imbalance of generation and load caused by volatile generations poses challenges on frequency regulation. AGC is required to respond to the generation fluctuations without violating operational and security constraints. While explicit model predictive control (EMPC) provides an approach, the partition number of the piecewise affine control laws grows exponentially with the number of constraints and prediction/control horizons, which hinders its application in large systems. In this paper, we propose an EMPC approach for AGC by approximating the control laws using Legendre polynomial series expansions, thus entirely eliminating the partition issue. Galerkin method is applied to the KKT conditions of EMPC's multiparametric quadratic programming (mp-QP) problem to compute the approximations. Case study in New England 39-bus system verifies the performance and efficiency of the proposed controller.

关键词： Automatic generation control explicit model predictive control Galerkin method Legendre polynomials optimal control spectral method

来源：评论

学校读者我要写书评

暂无评论

model predictive control of multiphase interleaved DC-DC converters with sensorless current limitation and power balance

Model predictive control of multiphase interleaved DC-DC con...

引用

39th IEEE Power Electronic Specialists Conference (PESC 08)

作者： Mariethoz, S. Beccuti, A. G. Morari, M. Swiss Fed Inst Technol Automat Control Lab CH-8092 Zurich Switzerland

ISBN: (纸本)9781424416677

The present paper investigates the control of interleaved DC-DC converters. It proposes an alternative solution to balance the currents between the legs without using current transducer, relying instead on a feedback loop based on the measurement of the capacitor voltage ripple. The appropriate measurement circuit is proposed. The voltage control uses a model predictive control scheme, which assumes the average model of a single leg converter, the unbalance being compensated separately. The controller intrinsically limits the current during transients, achieving protection of the semiconductor devices and avoiding coil saturation. The proposed control and balance methods are validated experimentally on a two-leg interleaved converter.

关键词： explicit model predictive control Kalman Filter MPC DC-DC SMPS VRM

来源：评论

学校读者我要写书评

暂无评论

Complexity reduction in motion cueing algorithm for the ULTIMATE driving simulator

Complexity reduction in motion cueing algorithm for the ULTI...

引用

20th World Congress of the International-Federation-of-Automatic-control (IFAC)

作者： Munir, Sarmad Hovd, Morten Fang, Zhou Olaru, Sorin Kemeny, Andras Norwegian Univ Sci & Technol Engn Cybernet Dept N-7491 Trondheim Norway Virtual Real & Immers Simulat Ctr RENAULT Paris France Supelec Automat Control Dept 3 Rue Joliot Curie F-91192 Gif Sur Yvette France

The performance of a driving simulator depends on the efficiency of the embedded motion cueing algorithm. An explicit model predictive control was established recently as a pertinent design framework for the motion cueing algorithm. The complexity of the explicit solution increases manifold when the human vestibular model is considered. The present paper focuses on the complexity reduction of explicit solution using low complexity contractive sets for the motion cueing algorithm. The low-complexity explicit controller is formulated for the efficient control of the motion cueing system for the ULTIMATE driving simulator available in Renault. (C) 2017, IFAC (International Federation of Automatic control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Motion cueing algorithm explicit model predictive control Complexity reduction Driving simulator Contractive set low complexity contractive sets

来源：评论

学校读者我要写书评

暂无评论

explicit predictive control of Forward DC-DC Converter Based on an Input-Mapping Method 43

Explicit Predictive Control of Forward DC-DC Converter Based...

引用

43rd Chinese control Conference (CCC)

作者： Gu, Xiang Li, Dewei Ma, Aoyun Yu, Yaru Shanghai Jiao Tong Univ Dept Automat Shanghai Engn Res Ctr Intelligent Control & Manag Key Lab Syst Control & Informat ProcMinist Educ Shanghai 200240 Peoples R China

ISBN: (纸本)9798350366907;9789887581581

In the practical application of model predictive control in power electronics, both online computational burden and model accuracy are crucial. This paper presents an explicit model predictive control method based on input-mapping method. To address the issue of parameter drift in the forward DC-DC converter system, the input-mapping method is introduced to compensate for model deviations using historical data. Firstly, the average model of the forward DC-DC converter system is introduced. For the control objective of voltage tracking, an explicit predictive control using the incremental model is adopted. Subsequently, input-mapping method is integrated with explicit predictive control. During offline computation, analytical forms of the input-mapping combination coefficients and the optimal solution function of explicit model predictive control are derived. Online computation of combination coefficients is conducted to obtain the optimal solution rapidly. The effectiveness of the proposed method is verified through simulations in MATLAB.

关键词： Forward DC-DC converter explicit model predictive control input-mapping method

来源：评论

学校读者我要写书评

暂无评论

A Multiobjective MPC Approach for Autonomously Driven Electric Vehicles

引用

IFAC-PapersOnLine 2017年第1期50卷 8674-8679页

作者： Peitz S. Schäfer K. Ober-Blöbaum S. Eckstein J. Köhler U. Dellnitz M. Department of Mathematics Paderborn University Warburger Str. 100 Paderborn 33098 Germany Department of Engineering Science University of Oxford Parks Road Oxford OXI 3PJ United Kingdom Hella KGaA Hueck & Co. Beckumer Str. 130 Lippstadt 59552 Germany

We present a new algorithm for model predictive control of non-linear systems with respect to multiple, conflicting objectives. The idea is to provide a possibility to change the objective in real-time, e.g. as a reaction to changes in the environment or the system state itself. The algorithm utilises elements from various well-established concepts, namely multiobjective optimal control, economic as well as explicit model predictive control and motion planning with motion primitives. In order to realise real-time applicability, we split the computation into an online and an offline phase and we utilise symmetries in the open-loop optimal control problem to reduce the number of multiobjective optimal control problems that need to be solved in the offline phase. The results are illustrated using the example of an electric vehicle where the longitudinal dynamics are controlled with respect to the concurrent objectives arrival time and energy consumption. © 2017

关键词： Electric vehicles explicit model predictive control model predictive control Motion planning Multiobjective optimisation

来源：评论

学校读者我要写书评

暂无评论

Comparison of Inverted Pendulum Stabilization with PID, LQ, and MPC control 29

Comparison of Inverted Pendulum Stabilization with PID, LQ, ...

引用

29th International Conference on Cybernetics & Informatics (K&I)

作者： Bakarac, Peter Klauco, Martin Fikar, Miroslav Slovak Univ Technol Bratislava Bratislava Slovakia

ISBN: (纸本)9781538644218

This paper covers mathematical modeling of the inverted pendulum process and design of three types of controllers: PI, linear-quadratic (LQR), and model predictive controller (MPC). Since the dynamics of the inverted pendulum process is in range of milliseconds, the explicit version of MPC is applied. All three controllers are implemented and experimentally tested on a laboratory scale of the inverted pendulum device.

关键词： inverted pendulum explicit model predictive control complexity reduction

来源：评论

学校读者我要写书评

暂无评论

Some Necessary and Sufficient Conditions for Correctness of Linear Machine in Presence of Numerical Errors 21st

Some Necessary and Sufficient Conditions for Correctness of ...

引用

21st IFAC World Congress on Automatic control - Meeting Societal Challenges

作者： Sharma, Aditi Bhushan, Mani Indian Inst Technol Dept Chem Engn Bombay Maharashtra India

Linear machine (LM) has been recently proposed (Airan et al., 2017) for solving the point location problem which arises in explicit model predictive control (e-MPC). LM associates a linear discriminant function with each critical region identified in the offline phase in e-MPC. The solution to the online point location problem in the LM approach then simply corresponds to the region whose discriminant function attains the largest value amongst all the discriminant functions. LM involves two steps: (i) identification of neighbouring critical regions, and (ii) finding the discriminant functions by writing constraints involving discriminant functions of neighbouring pairs of regions. Both these steps involve solving linear programming (LP) problems. Similar to any other optimization problem, the constraints of the LP are satisfied with some tolerances. Even though theoretically sound, the resulting LM may not accurately identify the critical region due to the numerical errors arising from these tolerances. In the current work, we identify some conditions which can be used as an aid by the user to judge the accuracy of LM results. In particular, we give a necessary condition for step (i) whose violation will yield incorrect misclassification for some point location problems. We also propose a sufficient condition whose satisfaction guarantees the accuracy of linear machine solution despite numerical errors which may have crept in during step (ii) of the LM design. This condition needs to be evaluated for each specified point during the point location phase. We illustrate thee ideas on the well known quadruple tank system. Copyright (C) 2020 The Authors.

关键词： point location explicit model predictive control multi-parametric programming

来源：评论

学校读者我要写书评

暂无评论

Multiparametric linear programming with applications to control

Multiparametric linear programming with applications to cont...

引用

44th IEEE Conference on Decision control/European control Conference (CCD-ECC)

作者： Jones, C. N. Baric, M. Morari, M. ETH Automat Control Lab Zurich Switzerland

Parametric programming has received a lot of attention in the control literature in the past few years because model predictive controllers (MPC) can be posed in a parametric framework and hence pre-solved offline, resulting in a significant decrease in on-line computation effort. In this paper we survey recent work on parametric linear programming (pLP) from the point of view of the control engineer. We identify three types of algorithms, two arising from standard convex hull paradigms and one from a geometric intuition, and classify all currently proposed methods tinder these headings. Through this classification, we identify a third standard convex hull approach that offers significant potential for approximation of pLPs for the purpose of control. We present the resulting algorithm, based on the beneath/beyond paradigm, that computes low-complexity approximate controllers that guarantee stability and feasibility.

关键词： parametric linear programming approximation explicit model predictive control

来源：评论

学校读者我要写书评

暂无评论

explicit spline-based continuous-time MPC: a study on design and performance 21st

Explicit spline-based continuous-time MPC: a study on design...

引用

21st IFAC World Congress on Automatic control - Meeting Societal Challenges

作者： Rohal-Ilkiv, Boris Gulan, Martin Minarcik, Peter Slovak Univ Technol Bratislava Inst Automat Measurement & Appl Informat Fac Mech Engn Namestie Slobody 17 Bratislava 81231 Slovakia

This paper presents a continuous-time model predictive control scheme based on B-spline functions used for signals and model approximation. The proposed controller offers two interesting advantages. First, it formulates the control signal as a continuous polynomial spline function, the nature of which is determined by its control polygon that is subject of optimization. Second, all continuous constraints assumed over prediction horizon are consistently transformed into constraints imposed on a finite number of elements of this control polygon. Using parametric quadratic programming we further show how to obtain an explicit representation of the proposed controller, which is known for its efficient online implementation. The featured simulation study demonstrates that by a suitable choice of number and position of knots of the spline function over the prediction horizon it is possible to substantially reduce the number of critical regions of the explicit controller while preserving control performance, and to mitigate the direct correlation between number of regions and chosen length of prediction horizon. Copyright (C) 2020 The Authors.

关键词： explicit model predictive control parametric programming linear systems B-spline functions continuous-time control efficient implementation

来源：评论

学校读者我要写书评

暂无评论

Unique polyhedral representations of continuous selections for convex multiparametric quadratic programs

Unique polyhedral representations of continuous selections f...

引用

American control Conference 2005 (ACC)

作者： Spjotvold, J Tondel, P Johansen, TA Norwegian Univ Sci & Technol Dept Engn Cybernet N-7491 Trondheim Norway

ISBN: (纸本)0780390989

A method which ensures uniqueness of the polyhedral partition of the parameter space for convex multiparametric quadratic programs (mp-QP) is presented. When the mp-QP has non-unique solutions, the norm of the solution vector is minimized and a unique affine optimizer function is identified for each region. It is proven, that under certain assumptions on the problem data, a globally continuous piecewise affine optimizer function is selected.

关键词： multiparametric programming constrained optimal control quadratic programming normal cone optimality condition explicit model predictive control

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

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

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

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

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：