Modeling DCS of Nuclear Power Plant With Extended GO-FLOW Methodology

2017 ◽  
Author(s):  
Lu Hongxing ◽  
Yang Ming ◽  
Dai Xinyu ◽  
Li Wei ◽  
Yoshikawa Hidekazu
Keyword(s):  
Control System ◽  
Flow Model ◽  
Modeling Method ◽  
System Structure ◽  
Control Action ◽  
Volume Control ◽  
Flow Modeling ◽  
Control Logic ◽  
And Control ◽  
The Relationship

GO-FLOW model is a success-oriented system modeling method which describes how the system configures its resources to achieve required functions by using basic functional units in terms of substances and demand flows in the system. The GO-FLOW models, which are directly built according to system structure drawings, can be used to analyze the reliability of a system with time and phased mission problems. With the development of Digital Control System (DCS), the reliability analysis of whole DCS has become an important task. However, there are some shortcomings using the traditional GO-FLOW methodology to model DCS: 1. There are not abundant operators in the GO-FLOW model to describe the control logic in DCS; 2. It is hard to model the relationship between the control actions and hardware devices using traditional GO-FLOW methodology; This paper presents an extended GO-FLOW modeling method. In this study, the GO-FLOW model is supplemented and improved, which can accurately describe the relationship and control logic between the hardware and control action (or human control action) in the running process of the DCS. In this paper, taking the Chemical and Volume Control System (CVCS) as an example, using the extended GO-FLOW modeling method established the model of CVCS, and the model of DCS control logic. This improved modeling method can be applied to the reliability modeling and evaluation of DCS.

scholarly journals Design of Tracked Model Vehicle Measurement and Control System Based on VeriStand and Simulink

2018 ◽  
Vol 175 ◽  
pp. 03047
Author(s):  
Hao Chang ◽  
Dafang Wang ◽  
Hui Wei ◽  
Qi Zhang ◽  
GuangLi Dong
Keyword(s):  
Control System ◽  
Data Processing ◽  
Vehicle Control ◽  
Logic Model ◽  
Motor Speed ◽  
Control Logic ◽  
Measurement And Control System ◽  
Working Principle ◽  
And Control ◽  
Measurement And Control

This paper presents the composition and working principle of the hardware and software of the measurement and control system based on VeriStand and Simulink for a tracked model vehicle. The hardware of the system is composed of a CompactRIO controller and acquisition cards, torque/speed sensors and a gyroscope. The vehicle control logic model and data processing model are built in Matlab/Simulink. VeriStand is adopted to manage models and interact with people. The system can control motor speed on both sides of the vehicle and collect data such as sprocket torque and speed, vehicle attitude on real-time. At last, we test and verify the system can work successfully.

A Study on Control System for Four-Wheels Independent Driving and Steering Electric Vehicle

2014 ◽  
Vol 701-702 ◽  
pp. 807-811 ◽  
Author(s):  
Xin Lai ◽  
Xin Bo Chen ◽  
Xiao Jun Wu ◽  
Dong Liang
Keyword(s):  
Control System ◽  
Electric Vehicle ◽  
Control Algorithm ◽  
Rear Wheel ◽  
Network Control ◽  
System Structure ◽  
Zero Radius ◽  
All Wheel Steering ◽  
Dynamics Models ◽  
And Control

The structure and principle of four-wheels independent driving and steering (4WIS-4WID) electric vehicle are presented firstly, and on this basis the structure of network control system base on CAN bus is built. Kinematics and dynamics models of typical steering modes (such as all wheel steering, front (rear) wheel steering, parallel steering, zero-radius steering) are built, and the control strategy is presented. The experimental results show that the control system structure and control algorithm are effective.

Modeling and Vibration Control of a Flexible Rotor by Using Magnetic Bearings

2011 ◽  
Author(s):  
Takuya Nomoto ◽  
Daisuke Hunakoshi ◽  
Toru Watanabe ◽  
Kazuto Seto
Keyword(s):  
Control System ◽  
Control Method ◽  
Design Procedure ◽  
Modeling Method ◽  
Magnetic Bearings ◽  
Active Magnetic Bearings ◽  
Flexible Rotor ◽  
Modeling And Control ◽  
Elastic Modes ◽  
And Control

This paper presents a new modeling method and a control system design procedure for a flexible rotor with many elastic modes using active magnetic bearings. The purpose of our research is to let the rotor rotate passing over the 1st and the 2nd critical speeds caused by flexible modes. To achieve this, it is necessary to control motion and vibration of the flexible rotor simultaneously. The new modeling method named as Extended Reduced Order Physical Model is presented to express its motion and vibration uniformly. By using transfer function of flexible rotor-Active Magnetic Bearings system, we designed a Local Jerk Feedback Control system and conducted stability discrimination with root locus. In order to evaluate this modeling and control method, levitation experimentation is conducted.

Design of Multi-Performance Monitoring and Control System for an Experimental BIPVs/BAPVs

2012 ◽  
Vol 614-615 ◽  
pp. 1352-1356
Author(s):  
Jin Jiang Zhang ◽  
Yong Ping Zheng
Keyword(s):  
Control System ◽  
Performance Monitoring ◽  
Interaction Mechanism ◽  
Electrical Energy ◽  
System Structure ◽  
Electrical Performance ◽  
Monitoring And Control ◽  
Monitoring And Control System ◽  
Component Reliability ◽  
And Control

Photovoltaics systems effectively used in buildings will contribute to reduce electrical energy consumption and carbon emissions significantly. Main characteristics and recent development of BIPVs and BAPVs and is analyzed firstly. The system structure and major equipment for an experimental BIPVs/BAPVs system is presented. And a multi-performance comprehensive monitoring and control system integrated both BIPVs and BAPVs is designed as well. It established an important system platform for further analysis of the interaction mechanism among the electrical performance, component reliability, and environmental adaptability of BIPVs particularly.

Software System Development of Measurement and Control System for a Nonlinear Absorber by Virtual Instrument

2011 ◽  
Vol 188 ◽  
pp. 236-240
Author(s):  
Cong Ling Zhu ◽  
Wei Zhu Jin ◽  
D.R. Ci ◽  
Zhi Gang Ding ◽  
S.T. Wu
Keyword(s):  
Control System ◽  
Virtual Instrument ◽  
System Development ◽  
System Structure ◽  
Software System ◽  
Measurement And Control System ◽  
Nonlinear Absorber ◽  
New Development ◽  
And Control ◽  
Measurement And Control

Measurement and control system is the key equipment for testing and analyzing of the dynamic characteristics for a nonlinear absorber.It is the necessary means of accomplishing to design the rationalization of the nonlinear absorber. This article has conducted the detailed research in the new development of absorber test equipment to the desing of system structure, The constituent of software system, and The process design, and The development of the computer program based on virtual techniques. Debugging and running this software system have shown that the precision and reliability of it have been proved.

scholarly journals Design and Implementation of Scalable Beam Steering Control System for Phased Array Radar

2019 ◽  
Vol 8 (9) ◽  
pp. 2984-2989
Keyword(s):  
Control System ◽  
Phased Array ◽  
Beam Steering ◽  
Control Unit ◽  
Steering Control ◽  
Control Logic ◽  
Phase Gradient ◽  
Phased Array Radar ◽  
And Control ◽  
Control System Architecture

Transmit/Receive (T/R) modules plays important role in advanced phased array radar system consists of array of antenna elements. In order to produce beam pattern for multiple radiating elements, the phase angle for each T/R module should be assigned with calculated value. When phase gradient is sent to T/R unit, phase values are calculated for array of elements associated with them. The paper presents a beam steering control system architecture consists of Graphical user interface, group controller with scalable T/R control unit (TRCU) having two hexa decagon T/R module controllers (HTRMCs) and control logic unit for parallel data flow. Calculation of 6 bit phase value from the phase gradient carried out using FPGA. Also, use of logic core and quantization of phase values are discussed. The paper also reports the area factor for the proposed architecture

Overview on the Design Approach for the CVCS I & C of the EPR™ Nuclear Power Plant in Taishan

2013 ◽  
Author(s):  
Antonio Ciriello ◽  
Daniela Kohler ◽  
Terry Morton ◽  
Thomas Lang
Keyword(s):  
Control System ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Engineering Design ◽  
Nuclear Power ◽  
Control Design ◽  
Volume Control ◽  
Functional Safety ◽  
Control Loop ◽  
And Control

The I & C (Instrumentation and Control) design of the CVCS (Chemical and Volume Control System) for the EPR™ nuclear power plant in Taishan (TSN NPP) is shortly introduced and the corresponding I & C module assignment procedure, according to the functional safety class principle, is described. An example of the I & C module assignment procedure is given for a control loop of the CVCS. In addition, the corresponding advantages and drawbacks are described and discussed. The approach described introduces a new method for the concerned I & C design by improving the interface between the system, process, and I & C engineering design. In fact, a fruitful collaboration was reached between the system and I & C design for the EPR™ project in Taishan, for the concerned interface.

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