检索结果-内蒙古大学图书馆

8th International-Federation-of-Automatic-Control (IFAC) Symposium on Mechatronic systems (MECHATRONICS) / 11th International-Federation-of-Automatic-Control (IFAC) Symposium on Nonlinear Control systems (NOLCOS)

作者： Mae, Masahiro Ohnishi, Wataru Fujimoto, Hiroshi Univ Tokyo 5-1-5 Kashiwanoha Kashiwa Chiba 2778561 Japan

Perfect tracking control method using multirate feedforward control is a very effective control method in high-precision positioning systems since this method provides zero tracking error for a nominal plant at every reference sampling point theoretically. When we design a multirate feedforward controller for a multi-input multi-output system, it is known that several types of controllers can be designed depending on how to select input multiplicities. Although multirate feedforward controllers provide perfect tracking at every reference sampling point theoretically, intersample behavior is different. In this paper, we propose the stable state trajectory generation method and the guideline to design an optimal multi-input multi-output multirate feedforward controller considering the 2-norm of control input and improve the intersample behavior. The effectiveness of the proposed method is verified in the simulation. (C) 2019, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Feedforward control Digital control multirate multi-input/multi-output systems Inverse system

来源：评论

学校读者我要写书评

暂无评论

Efficient Implementation of a Binary Iterative Learning Control 21st

Efficient Implementation of a Binary Iterative Learning Cont...

引用

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

作者： Arnold, Florian Topalovic, Daniel King, Rudibert Tech Univ Berlin Chair Measurement & Control Dept Proc Engn Str 17 Juni 135 D-10623 Berlin Germany

Iterative learning control (ILC) is an adequate control approach to handle various types of cyclic control tasks. However, when in each iteration the calculation of the control trajectory requires the solution of a high dimensional constrained quadratic program, the algorithm is bound to be infeasible for real-time applications with very small cycle lengths in the order of milliseconds due to the prohibitively large computational cost. In this contribution, an approach is presented to reduce the computational burden to solve an optimization-based iterative learning control that is restricted to a binary domain by orders of magnitude. The method is suitable for control trajectories that contain only few 1's, but a large number of 0's in each iteration for a specific class of problems, e.g., for cyclic firing synchronization of combustion tubes. The presented setup is tested experimentally at an acoustic mock-up of an annular pulse detonation combustor to determine an appropriate fire synchronization. More specifically, it is used to adjust the firing pattern of multiple simulated combustion tubes in order to reduce pressure fluctuations measured downstream in an annular plenum, which is a prerequisite to apply such a new thermodynamically efficient combustion process in a real gas turbine. Copyright (C) 2020 The Authors.

关键词： Learning control optimal control quadratic programming binary control discrete-time systems multi-input/multi-output systems

来源：评论

学校读者我要写书评

暂无评论

Considerations on loop pairing in MIMO processes. A multi-criteria analysis.

Considerations on loop pairing in MIMO processes. A multi-cr...

引用

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

作者： Herrero, J. M. Reynoso-Meza, G. Ramos, C. Blasco, X. Univ Politecn Valencia Inst Univ Automat & Informat Ind Camino de Vera S-N Valencia 46022 Spain Pontifical Catholic Univ Parana PUCPR Polytech School Ind & Syst Engn Grad Program PPGEPS Rua Imaculada Conceiccio 1155 BR-80215901 Curitiba PR Brazil

In this paper a new multi-objective approach for loop pairing in multi-input/multioutput processes is studied. Each controller structure of proposed input-output pairing is considered as a possible design concept. Under the meaningful objective space, defined by the control engineer, the concepts are compared and a final controller with a given trade-off is chosen. By means of an example, the paper establishes several findings: first, the controller type can be relevant when deciding on possible pairings and second, it is even more relevant the objectives chosen by the designer and his/her preferences. These findings point to multi-objective approach pairing as a powerful and promising technique. (C) 2017, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

关键词： multi-input/multi-output systems multi-objective optimization multiloop control loop pairing

来源：评论

学校读者我要写书评

暂无评论

MIMO multirate feedforward controller design with selection of input multiplicities and intersample behavior analysis

引用

MECHATRONICS 2020年 71卷 102442-102442页

作者： Mae, Masahiro Ohnishi, Wataru Fujimoto, Hiroshi Univ Tokyo Tokyo Japan

Inversion-based feedforward control is a basic method of tracking controls. The aim of this paper is to design MIMO multirate feedforward controller that improves continuous-time tracking performance in MIMO LTI systems considering not only on-sample but also intersample behavior. Several types of MIMO multirate feedforward controllers are designed and evaluated in terms of the 2-norm of the control inputs. The approach is compared with a conventional MIMO single-rate feedforward controller in simulations. The approach improves the intersample behavior through the optimal selection of input multiplicities with MIMO multirate system inversion.

关键词： Feedforward control Inverse system multirate multi-input/multi-output systems Digital control Position control

来源：评论

学校读者我要写书评

暂无评论

NOISE REJECTION STRATEGY FOR A LARGE SPACE STRUCTURE: THE GRANTECAN TELESCOPE

引用

IFAC Proceedings Volumes 2002年第1期35卷 283-288页

作者： L. Acosta M. Sigut G.N. Marichal S. Torres J.A. Méndez F. Martín Dept. of Fundamental and Experimental Physics Electronics and Systems University of La Laguna Dept. of Fundamental Mathematics University of La Laguna Avda. Francisco Sánchez s/n. La Laguna – CP:38204 - Tenerife (SPAIN) Phone: +34 922 318286 – Fax: +34 922 319085

In this paper, a series of results related to the decoupling of the 10m diameter Grantecan's primary mirror dynamics and its influence on the design of a controller for the mirror are presented. Firstly, an algebraic approach of the decoupling method, together with its general lines are shown. Some modifications of this procedure with respect to the way it was originally proposed with the aim of its simplification and improvement are also presented. Finally, a discussion about the design of a robust H ∞ controller for any of the SISO subsystems obtained after the decoupling and the corresponding results is carried out.

关键词： Large space structures multi-input/multi-output systems multivariable control systems Decoupling problems H-infinity control

来源：评论

学校读者我要写书评

暂无评论

MODELLING, IDENTIFICATION AND SIMULATION OF A DOUBLE CLOSED-LOOP INDUSTRIAL WET GRINDING CIRCUIT

引用

IFAC Proceedings Volumes 2012年第23期45卷 72-77页

作者： Moïse Mukepe Kahilu Michel Kinnaert Pierre Kalenga Ngoy Jean-Marie Moanda Ndeko Department of Automatic Control and Systems Analysis Université Libre de Bruxelles (ULB) 50 Av F.D. Roosevelt 1050 Brussels e-mail:{mmukepek michel.kinnaert}@ulb.ac.be Polytechnic Faculty Université de Lubumbashi (UNILU) DR Congo e-mail:kalenga.ngoy@unilu.ac.cd Polytechnic Faculty Université de Kinshasa (UNIKIN) DR Congo e-mail: jmariemoanda@unikin.cd

In this paper, a comprehensive approach for modelling, parameter estimation and global simulation of the grinding circuit of the Kolwezi Concentrator is presented. This process can be described by a nonlinear distributed parameter system. To differentiate between wet and dry grinding, the derived model takes into account the increase of the specific rate of breakage in the wet grinding process. In order to determine material transport dynamics within the mills, a new experimental method has been developed. Due to the lack of a colorant or a radioactive sensor, this procedure is based on the use of the G41 foaming as tracer. Both steady-state and dynamic simulation results are discussed and are shown to be in agreement with the experimental data.

关键词： Concentrators distributed parameter systems dynamic modelling multi-input/multi-output systems nonlinear models process parameter estimation process simulators

来源：评论

学校读者我要写书评

暂无评论

Self-tuning Control based on Discrete-time Sliding Mode with Applications

引用

IFAC Proceedings Volumes 2011年第1期44卷 774-779页

作者： Katsuhisa Furuta Akira Ohata Akihiko Sugiki Tokyo Denki University 2-2 Kanda Nishikicyo Chiyoda-ku Tokyo 101-8457 JAPAN Toyota Motor Corporation Higashifuji Technical Center 1200 Mishuku Susono Shizuoka 410-1193 JAPAN Nikki Denso Co. Ltd. 1-4-2 Osaku Sakura Chiba 285-0802 JAPAN

Abstract A multi-variable self-tuning controller is presented in this paper using the idea of discrete-time sliding mode. It was successfully applied to the engine start control on an automotive V6 engine model provided from SICE in 2006 of which the order was over 50. The requirements of the control were to suppress the engine speed overshoot just after the ignition and to regulate the engine speed 650 ± 50( rpm ) within 1.5( s ). The control results show the effectiveness of the proposed control.

关键词： Discrete-time systems Automotive engine control Lyapunov function multi-input/multi-output systems Self-tuning control Sliding mode

来源：评论

学校读者我要写书评

暂无评论

INFORMATIVE EXPERIMENT DESIGN AND NON-PARAMETRIC IDENTIFICATION OF 6-DOF MOTION PLATFORM

引用

IFAC Proceedings Volumes 2005年第1期38卷 680-685页

作者： M.I. Parra Calvache O.H. Bosgra P. Valk Delft University of Technology Delft Center for Systems and Control Mekelweg 2 2628CD Delft The Netherlands

In this paper the input design and non-parametric identification of a 6-input, 6-output Stewart Platform is considered. The approach takes into account the information matrix for the choice of realization combination of experiments. It considers as well a least squares recovery of frequency domain components. This approach makes maximum use of periodic excitations taking into account the constraints on the experimental conditions imposed over the system such as limited velocity and acceleration in order to recover the frequency response of the system from closed-loop data.

关键词： System identification Non-parametric identification multi-input/multi-output systems Frequency domain Closed-loop Identification

来源：评论

学校读者我要写书评

暂无评论

Identification of multivariable Canonical State-Space Representations

引用

IFAC Proceedings Volumes 2009年第10期42卷 1638-1643页

作者： L. Bako G. Mercère S. Lecoeuche Ecole des Mines de Douai Département Informatique et Automatique 941 rue Charles Bourseul 59508 Douai Cedex France Université de Poitiers Laboratoire d'Automatique et d'Informatique Industrielle 40 avenue du recteur Pineau 86022 Poitiers France

The paper introduces a method to estimate a linear state-space model from its input-output data. Its starting point is the conversion of the state-space model into an input-output ARMAX-like model. In order to conveniently estimate the parameters of this ARMAX model, it is necessary, given the structural characteristics of the initial state-space model, to assume that the dynamic state matrix A is nonderogatory. Under this condition, it is shown that the input-output model and the state-space model from which it is derived have the same order. Based on this important result in linear system realization theory, a canonical state-space representation is finally obtained through a simple construction technique. The developed method can be regarded as an alternative to the standard subspace methods particularly in situations where the state coordinates basis need to be maintained constant with respect to the input-output realization used for the estimation.

关键词： Least-squares algorithm State-space representation Canonical form ARMAX model multi-input/multi-output systems

来源：评论

学校读者我要写书评

暂无评论

Discrete-Time Robust Steady-State Control of Nonlinear multivariable systems: A Unified Approach

引用

IFAC Proceedings Volumes 2014年第3期47卷 8140-8145页

作者： Leonid S. Zhiteckii Valerii N. Azarskov Klavdiia Yu. Solovchuk Olga A. Sushchenko Int. Centre of Inform. Technologies & Systems Institute of Cybernetics 03680 MSP Kiev Ukraine National Aviation University 03058 Kiev Ukraine

The steady-state control of multivariable nonlinear discrete-time, time-invariant systems in the presence of arbitrary unmeasurable but bounded disturbances is addressed in this paper. The pseudoinverse model approach as a unified concept to cope with possible noninvertibility and to achieve a desired behavior of a wide class of both linear and of nonlinear multi-input multi-output square and also nonsquare systems is proposed. It is assumed that the number of the system outputs is not less than the number of its control inputs. Some results regarding equilibrium states are given. In particular, it is shown that the equilibrium state may not exist, in general. A simple linear pseudoinverse-based controller of the integral action is designed for regulating these nonlinear multivariable systems. The properties of robust stability and the boundedness of all signals caused by this controller are derived. Numerical examples are given to support the theoretical investigations.

关键词： Discrete time feedback control methods model-based control multi-input/multi-output systems nonlinearity robustness stability analysis

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：