Control System Design and Data Communication Realization of Road Accelerated Loading Test Equipment

2011 ◽  
Vol 383-390 ◽  
pp. 315-320 ◽  
Author(s):  
Ji Wei Zhang ◽  
Xu Guang Wang ◽  
Zhi Guang Guan
Keyword(s):  
Control System ◽  
Data Communication ◽  
Road Surface ◽  
Test Equipment ◽  
Single Chip ◽  
Operational Parameters ◽  
Loading Test ◽  
Test And Evaluation ◽  
Load Action ◽  
Hardware Circuit

Road accelerated loading test equipment is an important device for making road surface test under dynamic load action, and making test and evaluation on road structure and road surface material. The paper analyzes structure and working principle of road accelerated loading test equipment, mainly researches hardware circuit design of control system. In order to realize real-time display of operational parameters, data communication between PLC and single chip microprocessor uses free port communication mode. The paper mainly introduces communication protocol and its realization method, and proposes partial key programs. Operation of road accelerated loading test equipment indicates the equipment has reliable operation, the control system has stable working, and the data communication system is simple and practical.

Based on Single Chip Microcomputer and C# Carving Machine Control System Design

2014 ◽  
Vol 494-495 ◽  
pp. 1216-1219
Author(s):  
Li Chao Ma ◽  
Ke Zhao ◽  
Li Fu Zhang ◽  
Han Yang
Keyword(s):  
Control System ◽  
Computer Control ◽  
Circuit Board ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
C Language ◽  
Compensation Plan ◽  
Machine Control ◽  
Upper Computer ◽  
Hardware Circuit

Based on AVR Single Chip Microcomputer and C# language design of a carving machine control system. It elaborated on design of the main control board hardware circuit of USB and upper computer control software workflow. For circuit board uneven problems put forward a kind of automatic engraving depth compensation plan.

Design and Simulation of the Communication Circuit on Multi Jigging Machines

2013 ◽  
Vol 321-324 ◽  
pp. 909-916
Author(s):  
Ming Xia Yang ◽  
Wei Jie Wang ◽  
Wei Guo Qian ◽  
Xin Jun Chen ◽  
Xiang Hong Kong
Keyword(s):  
Control System ◽  
Reference Data ◽  
Control Circuit ◽  
Centralized Control ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Common Mode ◽  
Manufacturing Efficiency ◽  
Hardware Circuit ◽  
Mode Interference

Squid jigging machine is an important equipment in the oceanic squid jigging fisheries. In order to take centralized control of multi jigging machines, improve manufacturing efficiency, this paper introduce the centralized control circuit between PC and single chip microcomputer for the communication within multi jigging machines by the way of RS-485 bus in detail, and we focus on describing the design of the hardware circuit for the centralized control system. The master is PC while the slave is MCS-51. The communication between them is realized by the MSComm control in VB6.0. It researches practicable ways to improve the reliability of RS-485 bus system, respectively from different aspects such as bus conflict, burst interference, common mode interference and nodes fault and so on. This study provides reference data for the researchers.

Step Motor Control Based on FPGA

2013 ◽  
Vol 397-400 ◽  
pp. 1226-1229
Author(s):  
Juan Zhu ◽  
Yue Chen
Keyword(s):  
Motor Control ◽  
Control System ◽  
Integrated Circuit ◽  
High Speed ◽  
Step Motor ◽  
Single Chip ◽  
Field Programmable ◽  
Hardware Description ◽  
Motor Control System ◽  
Hardware Circuit

Design a step motor control system based on Field Programmable Gate Array (FPGA). Give the hardware circuit of this system and the program based on very high speed integrated circuit hardware description language (VHDL). Compared to step motor control system based on single chip microcomputer, the processing speed of this system is faster.

UNIVERSAL DIGITAL CONTROL SYSTEM OF A MACHINE AND TRACTOR AGGREGATES

1970 ◽  
pp. 10-14
Author(s):  
А. Yu. Izmaylov ◽  
Ya. P. Lobachevskiy ◽  
V. К. Khoroshenkov ◽  
N. Т. Goncharov ◽  
S. E. Lonin ◽  
...  
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Digital Control ◽  
Crop Protection ◽  
Automatic Regulation ◽  
Regulation System ◽  
Information Control ◽  
Operational Parameters ◽  
Technological Processes ◽  
Control And Management

The introduction of information and digital technologies that support and support all technological processes in the field is an urgent need for the development and implementation of such technology. An organisationally complex and financially intensive project is necessary because of the wide variety of economic entities that differ in the size of production, forms of ownership and socio-economic conditions of production. Automated information control system for mobile units agricultural enterprise provides those-Niko-economic performance, optimum capacity utilization through the use of timely and reliable information on technology. Machine and tractor aggregates are appertained as control objects with variable structure, which is explained by possibility of the system formation from tractor or field machines mobile units with various purposes: tillable, cultivatable, sowing, harvesting and etc. This MTA feature was determined creation of digital control systems of two groups of automatic control and management of the basic energy and operational parameters: tractors, machines and vehicles as part of MTA. To the first group are appertained the automatic control system of tractor motor component loading, motion speed, frictional sliding. To the second group – automatic regulation system of operating depth, seed rate, treatment of liquid combined fertilizers and crop protection agents, filling and driving of various MTA. Novelty of researches consists in methodology of the organization of the centralized control and management of various technological processes at carrying out field works.

Experimental Research on Pulsating Two-Phase Flow Pressure Drop Characteristics in Horizontal Rectangular Channel

2014 ◽  
Author(s):  
Chong Zou ◽  
Puzhen Gao ◽  
Wei Pan ◽  
Zheng Yang ◽  
Xianbing Chen
Keyword(s):  
Control System ◽  
Rectangular Channel ◽  
Hysteresis Effect ◽  
Regulation System ◽  
Single Chip ◽  
Industrial Control ◽  
Correctional Programs ◽  
Control Computer ◽  
Industrial Control Computer ◽  
And Control

We preliminarily designed a power tracking and control system using single-chip computers and industrial control computer in the electric heating simulated power loop. The system is an innovational design based on the proven simulated nuclear power loop, with increased techniques of step-less power regulation system and modeling nuclear feedback effect correctional programs. We promoted both hardware and software designs of this power tracking and control system in this paper. It used single-chip computers as the core control chips and an industrial control computer as the additional correctional program and record carrier. The process and implementation of the control software are presented, which is designed as a fuzzy theoretical nonlinear system. In order to ensure the subsequent updates, the access interface of the system is open for following correctional programs, including the correctional program of void fraction effect, temperature effect, hysteresis effect and heat power distribution effect. Taken hysteresis effect correctional program as an example, we use an offset tic-tac clock replacing the inherent tic-tac clock in different devices of the system in order to reduce the hysteresis effect of measuring and corresponding errors. We also put out a preliminary analysis of the accurate synchronization for the system at the end of the paper.

Application of the Real-Time EtherCAT Technology in Wind Power Control System

2012 ◽  
Vol 580 ◽  
pp. 155-159
Author(s):  
Xiang Ming Wang ◽  
Jin Chao Wang ◽  
Dong Hua Sun
Keyword(s):  
Control System ◽  
Real Time ◽  
Wind Power ◽  
High Speed ◽  
Communication Protocol ◽  
Data Communication ◽  
Data Acquisition System ◽  
Slave System ◽  
The Real ◽  
Wind Power System

In this paper, the real-time EtherCAT technology is introduced in detail, which including operating principle, communication protocol and the superiority performance of EtherCAT i.e. synchronicity, simultaneousness and high speed. To show how to design a slave system that considering the characteristics of application, the method of developing systems based no EtherCAT technology are proposed. Finally, a data acquisition system based on EtherCAT technology is designed. Application of EtherCAT technology can improve the real-time characteristics of data communication in wind power system.

Research on the Character of a Synchronous Control System with Wireless Data Communication

2010 ◽  
Vol 455 ◽  
pp. 206-210
Author(s):  
Jun Li Liu ◽  
Yan Yan Yan ◽  
G.Q. He
Keyword(s):  
Control System ◽  
Time Delay ◽  
Data Transmission ◽  
Data Communication ◽  
Control Model ◽  
Data Loss ◽  
Wireless Data ◽  
Synchronous Control ◽  
Wireless Data Transmission ◽  
Set Up

It discusses the reasons of the data transmission time delay and packets loss based on the theory of net data transmission. Aimed to the question of the time delay of data transmission and packets loss, the control system models are set up to analyze their influence to the performance of the control system. Based on the synchronous control model analysis with wireless data transmission, a method to control the system is reached with the state prediction when the communication error or data loss appears. It can control constantly when communication errors appear, and also it can get the most error period by numerical analysis.

The Study of Control Strategy for Sensor-Less PMSM

2014 ◽  
Vol 1006-1007 ◽  
pp. 575-580
Author(s):  
Qing Xie Chen ◽  
Jing Jing Chen ◽  
Yi Biao Fan
Keyword(s):  
Control System ◽  
Permanent Magnet ◽  
High Precision ◽  
Control Strategy ◽  
Control Algorithm ◽  
Simulation Experiment ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Single Chip

Targeting development of control system of a permanent magnet synchronous motor applied to high precision requirement, A strategy is researched to develop a single chip with built-in sensor-less control algorithm which is used as the control core of PMSM control system, the composition of the hardware and the realization of software of the chip are designed, and the simulation experiment is carried out to verify feasibility and rationality of the control strategy as well.

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