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Evaluation of on-off semi-active vehicle suspension systems by using the hardware-in-the-loop approach and the software-in-the-loop approach

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PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING 2015年第1期229卷 52-69页

作者： Lozoya-Santos, Jorge de-J Morales-Menendez, Ruben Ramirez-Mendoza, Ricardo A. Tecnol Monterrey Colonia Tecnologico 64849 Monterrey Mexico

Three controllers, namely the skyhook controller, the mixed-single-sensor controller and the groundhook controller, are compared using two validation approaches, namely the hardware-in-the-loop approach and the software-in-the-loop approach. The software-in-the-loop approach considers the dynamics (e.g. the body heave, the yaw, the roll, the pitch and the force) and the geometric parameters (the motion ratio of the suspension) without the real-time constraints. This allows an easier debugging and design procedure to be carried out for the control systems. The hardware-in-the-loop approach includes a commercial magnetorheological damper for testing the dynamic and transient responses in a control system. It is of interest to compare the conclusions generated under both approaches. The hardware-in-the-loop approach considers an on-off magnetorheological damper, and a quarter-vehicle model in a real-time embedded system. Two types of test were applied: chirp surface road tests and type F surface tests (ISO 8606:1995). For the software-in-the-loop approach the non-linearities and dynamics due to the geometric and physical component characteristics of a vehicle model were simulated by CarSim (R) software, while the non-linear magnetorheological damper model and the controller were running in MATLAB (R)/Simulink (R). The classical tests for the vehicle, namely the dynamics bounce sine sweep test, the double-lane-change test and the fishhook test, were applied. In the hardware-in-the-loop approach, the best controller was the skyhook controller for comfort and the groundhook controller for road holding. In the software-in-the-loop approach, the mixed-single-sensor controller is the best for comfort, and the groundhook controller can be used in emergency driving conditions since it improves the stability, the road holding and the wheel tramp. The best controller in the hardware-in-the-loop approach and the best controller in the software-in-the-loop approach are not the sam

关键词： Quarter vehicle full vehicle magnetorheological damper ride comfort road holding computer-aided software and systems engineering computer-aided control system design

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A Development of an Intelligent Man-machine Interface for computer-aided design, Simulation and Implementation of control systems

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IFAC Proceedings Volumes 1987年第5期20卷 239-244页

作者： H.A. Barker M. Chen P.W. Grant C.P. Jobling P. Townsend Departments of Electrical and Electronic Engineering and Mathematics and Computer Science University College Swanses Singleton Park Swansea SA2 8PP UK

The philosophy. aims and recent results obtained in an investigation of improvements in the human-computer interface for computer-aided analysis. simulation and implementation of control systems are described in this paper. It is shown that descriptions of control systems in the form of block diagrams and signal flow graphs with standard mathematical text improves the interface by making it more natural. familiar and friendly for the user. The support of this natural interface. through a menu-driven. high-resolution colour graphics workstation environment with both local and networked computing resources is described. design criteria are develLlped for the data structures. data transformations and consistency-checking algorithms that are necessary to support the user and allow the system to be used in a flexible fashion. Rule-driven symbolic manipulation for system transformation. with computer algebra systems for mathematical processing at all stages of the design process, are shown to be powerful new concepts for application in this stage of computer-aided control system design and simulation.

关键词： C language computer algebra computer-aided control system design computer graphics human factors numerical analysis Prolog system analysis

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Industrial Applications in the Netherlands of computer-aided design Packages for control systems: Trends and Practice

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IFAC Proceedings Volumes 1985年第8期18卷 65-68页

作者： P.P.J. van den Bosch A.J.W. van den Boom Delft University of Technology. Department of Electrical Engineering PO Box 5031 2600 GA Delft The Netherlands Eindhoven University of Technology Department of Electrical Engineering PO Box 513 5600 MB Eindhoven The Netherlands

In this paper we will describe and illustrate some applications of CACSD packages in Dutch industry. Some typical usages of CACSD in industry will be illustrated. Further we will analyse the results of an inquiry with respect to the use and need for CACSD in industry and universities which was held in 1982/1983 in the Benelux and we will resume the activities of a working group in the Benelux which aims to promote CACSD

关键词： computer-aided design computer-aided control system design computer control control engineering computer applications Identification system Analysis

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CAEBEL - A computer-aided control systems Synthesis and Analysis system

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IFAC Proceedings Volumes 1987年第12期20卷 367-371页

作者： D.A. Hullender C.C. Blackwell K.L. Lawrence A.L. Blackwell J.K. Nisbett C.C. Ku T.L. Wood Department of Mechanical Engineering The University of Texas at Arlington P.O. Box 19023. 76019. Arlington Texas USA Bell Helicopter Textron Inc. P.O. Box 482. 76101. Fort Worth USA

This paper describes a new computer simulation package for nonlinear dynamic systems that can be described by a block diagram and/or state space equations. Graphics routines are used to draw the block diagram for the system. Elements for the diagram are selected from a menu that includes transfer functions, summers, state space equations, and several nonlinearities such as dead zone, limiters, hysteresis, etc. Once the diagram is complete, the user activates the analysis package which can be used to generate transfer functions, root locus plots, Bode plots, and/or transient response plots. A unique feature of this simulation package is the automatic formulation of the state-space equations from the graphics image of the system.

关键词： computer-aided control system design nonlinear control systems frequency response root loci transfer functions eigenvalues time-domain analysis state-space

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Comparison of stabilizing control structures for dividing wall columns

Comparison of stabilizing control structures for dividing wa...

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11th IFAC Symposium on Dynamics and control of Process systems including Biosystems

作者： Qian, Xing Jia, Shengkun Skogestad, Sigurd Yuan, Xigang Tianjin Univ State Key Lab Chem Engn Collaborat Innovat Ctr Chem Sci & Engn Tianjin Sch Chem Engn & TechnolChem Engn Res Ctr Tianjin 300072 Peoples R China Norwegian Univ Sci & Technol NTNU Dept Chem Engn N-7491 Trondheim Norway

The focus of this paper is to investigate stabilizing control (single-loop PID control) of a dividing wall column (DWC) for separating ethanol, n-propanol and n-butanol at atmospheric pressure. Three control structures arc studied: control structure with fixed split ratios (CS1), control structure with an active liquid split (CS2) and control structure with an active vapor split ratio (CS3). The dynamic performances of the three proposed control structures prove that the three control structures are able to handle feed disturbances inserted into DWC. The simple control structure with fixed split ratios (CS1) is more applicable in industry. Considering the vapor split ratio disturbance, CS2 and CS3 are better than CS1. If the feed composition of A rarely changes, CS3 is able to handle the other feed disturbances. This paper proves that the three-product DWC can be controlled with only three temperature controllers. (C) 2016;IFAC (International Federation of Automatic control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Distillation columns Automatic process control computer-aided control system design systems engineering Process simulators Numerical simulation

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Nonlinear Economic Model Predictive control for Microgrid Dispatch

Nonlinear Economic Model Predictive Control for Microgrid Di...

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10th IFAC Symposium on Nonlinear control systems (NOLCOS)

作者： Zachar, Michael Daoutidis, Prodroutos Univ Minnesota Dept Chem Engn Minneapolis MN 55455 USA

This paper addresses dispatch of a microgrid system using nonlinear economic model predictive control. Constraints in the model predictive control formulation are used to ensure that microgrid units stay within their desired operational range (i.e. power output, storage level, and temperature) and that the net energy exchange with the macrogrid over each hour stays within some scheduled bounds. A dynamic, continuous-time microgrid model is developed and used to test this dispatch strategy over a 24-hour period. The proposed dispatch strategy is able to satisfy the bounds on energy exchange and desired temperature.

关键词： Model based control Predictive control Electric power systems Renewable energy systems computer-aided control system design

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Economic dispatch for microgrids with constrained external power exchange

Economic dispatch for microgrids with constrained external p...

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11th IFAC Symposium on Dynamics and control of Process systems including Biosystems

作者： Zachar, Michael Daoutidis, Prodromos Univ Minnesota Dept Chem Engn & Mat Sci Minneapolis MN 55455 USA

This paper examines microgrid unit dispatch, with hourly bounds on energy exchange with the macrogrid and minimum storage level constraints. These goals can be used to meet market constraints and to ensure there is sufficient energy reserved for future periods, respectively. In particular, economic model predictive control is used to minimize cost while ensuring these scheduling goals and other operational constraints are satisfied. Simulation of a dynamic microgrid system over a 24-hour period shows that the proposed dispatch strategy is able to effectively reject forecasting errors and meet the established energy exchange and storage level goals. (C) 2016, IFAC (International Federation of Automatic control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Model based control Stochastic control Electric power systems Renewable energy systems computer-aided control system design

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Dynamic Optimization Case Studies in Matlab&Simulink and Dynopt

Dynamic Optimization Case Studies in Matlab&Simulink and Dyn...

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11th IFAC/IEEE International Conference on Programmable Devices and Embedded systems (PDeS)

作者： Ozana, S. Wagner, P. Pies, M. Tech Univ Ostrava Fac Elect Engn & Comp Sci Dept Cybernet & Biomed Engn Ostrava Czech Republic

ISBN: (纸本)9783902823144

The paper deals with the case studies concerning the problems of dynamic optimization. It introduces the following examples: problem with free time and fixed end point, problem with fixed time and free end point, and problem with fixed time and fixed end point. It shows the construction of the models in Matlab&Simulink and Dynopt toolbox, and their solution and verification of the results.

关键词： computer-aided control system design optimization problems Matlab Dynopt optimal control

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control of a laboratory robot using an open DSP-based controller

Control of a laboratory robot using an open DSP-based contro...

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UKACC International Conference on control 98

作者： Barambones, O Etxebarria, V Univ Basque Country E-48080 Bilbao Spain

ISBN: (纸本)085296708X

This paper describes the design and implementation of an external DSF-based controller for a laboratory robot. This external controller has an open architecture and is easily programmable, so that it can be used far implementing a wide variety of central schemes on a single device. A simple independent-joint PID control is implemented and experimentally tested, and the results are compared with those obtained with the robot's internal built-in controller, which uses a similar central strategy. To further illustrate the flexibility of the presented external controller a simple sliding-made central scheme is also implemented and tested.

关键词： robotics non-linear systems computer-aided control system design

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Multi-objective optimization based tuning tool for industrial 2doF PID controllers

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IFAC-PapersOnLine 2017年第1期50卷 7511-7516页

作者： Gamboa C. Rojas J.D. Arrieta O. Vilanova R. Escuela de Ingeniería Eléctrica Universidad de Costa Rica United States Instituto de Investigaciones en Ingeniería Universidad de Costa Rica United States Departament de Telecomunicació i d'Enginyeria de Sistemes Universitat Autònoma de Barcelona Spain

A computer-aided control system design tool is presented. This tool is able to take advantage of a database of Pareto optimal PID controllers. The idea is to give to the control engineer an useful tool to close the gap between the optimization procedure and the final selection of the parameters. The input to the tool are the allowed degradation of the considered cost functions, the desired level of robustness and the information of the plant, in the form of second order plus time delay model or a set of input-output data. The tool is written as a graphical user interface in MATLAB© and freely available to anyone. © 2017

关键词： computer-aided control system design Industrial control Multiobjective optimisations PID control system identificacion

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