Control System Design Package Research Articles

Magnetic Levitation Remote Control Laboratory Based on Matlab and Websockets

This work proposes a novel architecture for constructing remote laboratories, employing modular building blocks: Matlab/Simulink software for control system design and simulation, WebSocket communication technology for continuous data exchange, and a front-end application developed using the Angular framework. To facilitate WebSocket communication on the Matlab server side, the MatlabWebSocket library is implemented. Beyond the Angular framework, interactivity within the remote laboratory is further enhanced through 3D visualization of the controlled system using a Three.js based library.These combined technologies are applied in the development of a remote laboratory for a fast, unstable, and nonlinear magnetic levitation system. The laboratory allows users to remotely set desired values and control parameters for experiments, while also providing continuous data visualization in various forms, including numerical readouts, graphs, and 3D animations. This approach demonstrates the effectiveness of the proposed architecture for building remote laboratories for complex systems.

Assessment of basic control strategies through dynamic simulations: A CO2-based chiller under extreme off-design conditions

Modelling and simulation tools offer peerless possibilities to dominate the increasing complexity of industrial applications, accelerating innovation cycles by quickly exploring and exploiting new efficient, reliable, and green possible solutions. In this paper, a dynamic model of a chiller system is developed through a mixed causal and acausal modelling approach. The chiller system uses carbon dioxide as a refrigerant and satisfies the cooling needs of high energy-demanding buildings. The model is validated against experimental data under various operating conditions and can be used to investigate the performances of different control logics under a wide partialization spectrum ranging from around 15% to 100% of the design cooling power of the system. Three simple control strategies, combining rule-based control and PID control, are presented and compared through both steady load simulations and daily characterizations. Simulation results point out opportunities that arise from the integration of the presented model in Computer-aided Control System Design (CACSD) software tools.

Control system software design of tunnel automatic car washing Machine

This paper focuses on the control system of tunnel automatic car washing machine and puts forward a control scheme of automatic car washing system based on PLC control. This design uses domestic Hexin PLC as the core for control and man-machine interaction through touch screen, so as to control and monitor the work of the system. Each switch button, infrared sensor, ultrasonic sensor and limit switch are input to PLC as output signal, and then PLC controls the operation of each working part. This PLC based control system is more reliable, and easy to implement, in the actual use of simple operation, and easy to maintain, and have a good market prospects.

Un enfoque interactivo para el análisis y diseño de sistemas de control utilizando el método del lugar de las raíces

<p>El lugar de las raíces es un método clásico para el análisis y diseño de sistemas lineales de control que ha formado parte desde su irrupción en los años cincuenta de los programas de los cursos básicos de control automático. La aparición de herramientas software de diseño interactivo de sistemas de control, que dibujan fácilmente el lugar de las raíces, permite a los docentes centrarse en explicar cómo afecta al lugar de las raíces la introducción de nuevos polos/ceros en la función de transferencia en lazo abierto, en vez de en explicar sus reglas de construcción. En este trabajo se presenta una nueva metodología docente para introducir la técnica del lugar de las raíces en cursos básicos de control que fomenta la utilización de una herramienta interactiva, como por ejemplo la herramienta LCSD desarrollada por los autores, para reforzar su aprendizaje.</p>

Three Basic Theorems in Numerical Analysis in Control Engineering Course and Their Application

Control system design packages like MATLAB, SICLAB, OCTAVE, etc. have become essential components of both undergraduate and graduate courses in the field of systems and controls. In particular, the most important subject related to control system design in the undergraduate course is the analysis of a nonlinear equation that is based on iterative methods. In this paper, applications of three basic theorems, –implicit function theorem, Newton-Kantorovich theorem, and fixed point theorem– are proposed to be taught in the numerical analysis in the control engineering course. In order to demonstrate the usefulness of these theorems, several important features are discussed. Furthermore, a practice exercise based on the practical control problem is discussed for proving the useful subject of the numerical analysis in the control engineering course in the graduate level.

Multipurpose Agricultural Robot Platform: Conceptual Design of Control System Software for Autonomous Driving and Agricultural Operations Using Programmable Logic Controller

Multipurpose Agricultural Robot Platform: Conceptual Design of Control System Software for Autonomous Driving and Agricultural Operations Using Programmable Logic Controller

Wheeled Mobile Robot Based on 51 Single Chip Computer Control System Design

Controller is the core of robot control system. This design uses a dual stc89c52rc single chip microcomputer control, which processes and responds very quickly,with the campaign, obstacle avoidance, automatic tracing function. This article describes the hardware and software design of control system.

Control System Design of Pneumatic Conveying in Sand/Dust Environment Simulation Test

This paper focuses on the design of pneumatic conveying control system, including the design of both hardware and software part. The hardware part is mainly about building a test bed. Under certain wind conditions, by controlling the rotary feed valve to achieve the control of sand/dust concentration. The software part is to make the use of LabVIEW to develop a screen display program, which can achieve real-time data acquisition and control. The paper consists of three parts, the pneumatic control system hardware design, the pneumatic conveying control system software design and then Origin is used to linear fit the wind speed parameters collected back.

The Temperature Control System Design of Microchip Level PCR Instrument Based on SOPC

A design approach of the temperature control of a novel microchip level PCR instrument based on SOPC technique is presented in this paper. The soft-core processor with RISC framework, NIOS II, which embedded in the FPGA (CyclonIII EP3C16F484C6) of Altera corp., is used as the key component to control the PWM controller achieving the temperature control of the micro-chamber stationary microchip level PCR instrument, to control the Avalon stream slave peripheral acquiring controller achieving the temperature signal detection by the flexible snake like copper wire temperature sensor, and to control the micro-pump and the micro-valve achieving the sample injection and sample outflow controlling. Simultaneously, the control temperature algorithm based on the Smith predictive and adaptive Fuzzy-PID is adapted in this system. The design of PCR microchip, the Smith predictive adaptive Fuzzy-PID temperature control algorithm, the hardware framework and the software design of control system are mainly introduced. And the simulation results testified the correctness of the design method and practicability. Keywords: Microchip level PCR instrument; Smith predictive and adaptive Fuzzy-PID controller; SOPC; The flexible snake like copper wire temperature sensor

Design of Magnetorheological Damper Control System for Vehicle Suspension

The damping force of Magnetorheological damper (MRD) can be controlled in a certain range by applying a steady magnetic field to reduce vehicle suspension vibration effectively. This paper presents the analysis of the damping characteristics of the twin-tube MRD, and the design of embedded control system for Twin-tube MRD used to semi-active vehicle suspension. The laws of varying damp force with current, displacement and frequency are investigated by testing for the damper, for instance the relationship curve of damping force vs. current. The control system is composed of controllable current driver and electrical control unit (ECU). ECU is developed based on MC9S12XDP512 chip. Signals that ECU acquired come from three types of sensor, i.e. digital temperature sensor, MEMS acceleration sensor and laser distance sensor embedded in MRD. The sampling frequency may exceed 400Hz. The programming is carried out in accordance with the state data acquisition and the improved On-Off control algorithm．Aiming at the high time response requirement of the MR damper, a Pulse-width modulation (PWM) current driver was designed. The hardware solutions drive circuit, interface circuit as wel1 as the software design of control system are discussed in detail. The proposed designed system has been put in actual MRD controlling application, whose test results prove its fast current response and high precision.

Model-Based Feedback Flow Control Development and Simulation for a Pitching Turret

The closed-loop control systems include dynamical and measurement-based estimators, controllers, filters, and compensators. These components are developed using both computational data from computational fluid dynamics simulations and experimental data from wind-tunnel runs within the common framework of SMARTFLOW: engineering software for flow control system design. The control systems are evaluated through a series of controlin-the-loop computational fluid dynamics simulations, demonstrating the merits of feedback control through robustness in the presence of measurement noise, modeling errors, and highly unsteady conditions. The computational fluid dynamics simulations also demonstrate reductions in actuation energy below levels required by open-loop systems.

Design on the Precise Regulating Control System for Moisture and Nutrient of Plants Based on PLC

Abstract The moisture and the concentration of K in the soil in plant ecological park was accurately controlled based on the SIMATIC S7-300 PLC controller. The hardware of control system based on PLC was set up, at the same time, the control algorithm used in the moisture and concentration of K was analyzed and the software design of control system was also completed. At last, the control system was proved to be practicality and superiority by comparing the quantity and quality of potatoes yield from the two plots, one is controlled by the designed controller and the other is in the natural growth.

The Design and Implementation of Fuzzy Neural Network Control Algorithms in Urban Sewage Treatment Control System

In this paper,the artificial intelligence control technology is used in sewage treatment plants, we use fuzzy control method in the sewage treatment process, we use the dynamic fuzzy control in the water quality of the sewage treatment process parameters , on this basis, we completed the automatic control system software design, the upper control software we use the WinCC configuration ,the next bit control softwarewe use the STEP7 5.1. We use the object-oriented programming idea to improve the efficiency of automatic control software. We developed the application communication protocol between the upper and lower computer layer, the next crew and the host computer can run independently when they are not connected,when the communication connects again, you can pass the parameters of the system from each other to avoid the loss of valid data. The central control system monitors the plant process and equipment operation all the time, the remote control substitutes for the original analog console, it is important simulation parameters to trend display, allowing the operator to better control water quality.

Research and Development on the Open PMAC-Based CNC System Software

Based on PMAC open CNC system, which features an open secondary development of space left to the designer. This topic has developed a set of application and secondary development of the NC system experimental platform, that is, IPC (industrial computer) machine + PMAC structure of open CNC system. This issue focuses on the overall structure of the numerical control system software design and the function module design and development process.

Software for modelling and simulation of a Remotely-Operated Vehicle (ROV)

This paper considers the dynamic modelling and simulation of an underactuated Remotely Operated Vehicle (ROV) designed by Robotic Research Centre (RRC), in Nanyang Technological University (NTU) using a ROV Design and Analysis (RDA) toolbox written in MATLAB/SIMULINK™. The proposed RDA provides a means to simulate the mathematical models of ROV and the control system design before planning for final hardware implementation. This is especially useful, as the ROV model is highly uncertain due to the hydrodynamic forces that are nonlinear and coupled. However, there is no commercial software for ROV control system design and analysis. (Received in May 2006, accepted in August 2006. This paper was with the authors 1 month for 1 revision.)

Integration of control system design and implementation over the internet using the Jini technology

AbstractThis paper describes an approach for the integration of control system software design, testing, and implementation over the Internet using the Java and Jini technologies. Process models and control systems are remotely designed and tested in a virtual laboratory (also called the virtual world), and then implemented in a physical plant (also called the real world) through an integrated environment. Although control system and process model designers and real‐site operators are geographically dispersed they work together as a team over the Internet to provide the maintenance support to all the authorized industrial processes. As a consequence, time and money can both be saved because there is no need for an expert of the control software supplier to travel to the site of the real plant and conduct on‐site implementation. A generic control system life cycle model is presented first in this paper. Then three enabling technologies including Java, Jini and WWW are briefly introduced. Taking advantage of the Java, Jini and WWW technologies, an Internet‐based general infrastructure is proposed to remotely facilitate process modelling, control system design, simulation, validation and on‐site implementation. An integrated environment is established to implement the infrastructure. A water tank with a liquid level control system is refereed as a case study to illustrate how the prototype of the integrated environment works over the Internet. Further work and the conclusions are given at the end. Copyright © 2003 John Wiley & Sons, Ltd.

Real-Time Simulation Using Two Personal Computers for Control Education

This paper suggests a real-time simulation using two personal computers for control systems, primarily for control education. The experiment is composed of a PC for the controllers, a PC for the plant, an open network, a general-purpose computer-aided control system design (CACSD) package, a model toolbox, and a network box. Among various models in usual textbooks, 10 models are animated and can be simulated with other PC for the controllers. To reduce the effects of the time delay, particularly for fast plants, a time-scaling method is introduced for slow and fast motions. A network box is introduced for easy connection and programming of networks. A model toolbox is introduced for the various models of control systems. It is demonstrated that this real-time software-in-the-loop simulation will be very useful, particularly for control education.

Mechatronic cine-film copying using transputer control

Copying of cine-film using panel printers produces defects in the copied films due to the sprocket drives. A new sprocketless machine has been designed using modern mechatronic techniques. The control system has been implemented on four T800 transputers and one T222 transputer to cope with the data processing after the system was simulated using the ACSL continuous system simulator, and designed using MATLAB and CONTROL-C control system design software. The performance of the new machine is nearly three times faster than previous machines, operating at film speeds up to 10 m s −1. Speed variations are reduced to less than 1% and tension variations are controlled to within 5%. The controller was sufficiently robust to allow for changes from acetate to polyester film base, which have almost a two-fold difference in stiffness and damping.

Machine tool drivetrain modelling using computer-aided control system design

This paper presents an analytical model of the interaction between the position loop controller, servo system and the table mechanism in a typical milling machine. It addresses the characterisation of the feed drive system block diagram; modelling of the frictional effects in terms of stiction, coulomb and viscous friction and identification of the position controller and servo system using a commercially available computer-aided control system design (CACSD) package. The model is given in block diagram form and can be used to study the transient and the steady state relationship between the command signal generated by the controller and the table velocity (feed rate) in a closed-loop feedback drive system.

Computer aided development of biomechanical pilot models

In this paper the computer aided development of biomechanical pilot models for the prediction of roll ratcheting (RR) is described. At first the phenomenon of RR is characterized as an aircraft-pilot coupling problem. Existing biomechanical pilot models for the prediction of RR are presented. A computer aided procedure for the establishment of biomechanical pilot models is described by setting up an existing pilot model. The procedure is based on the application of a software package for multibody system calculations (SIMPACK) and a control system design software tool (MATLAB/SIMULINK). The first is used to determine the pilot model equations of motion and the latter is applied to estimate the model parameters as well as to conduct further evaluations. With the help of this procedure, deficiencies of the existing state-of-the-art biomechanical pilot model are shown. Due to these deficiencies new pilot models have been established and are assessed on the basis of the parameters identified. According to this assessment some pilot models suitable for further applications are selected and used to investigate a RR incident. In order to predict the RR potential, the stability of the aircraft-pilot loop, which contains a biomechanical pilot model and the augmented aircraft model to be investigated, is assessed.