The control method of rubber tyre gantry （RTG） spreader in Qingdao Port Container Terminal is logic board control,which has many shortcomings such as expensive spare parts and high faults.This paper designs a new co...The control method of rubber tyre gantry （RTG） spreader in Qingdao Port Container Terminal is logic board control,which has many shortcomings such as expensive spare parts and high faults.This paper designs a new control system using programmable logic controller （PLC） centralized control to replace the original logic board control.The new system mainly contains complete ELME spreader control scheme design,hardware selection and PLC control program development.Its field application shows that the system has characteristics of high efficiency,low running cost,easy maintenance.展开更多
In the field of industrial process control,a fast-development platform for programmable logic controller(PLC)systems is designed in order to solve two main problems of rapid development of PLC control system and progr...In the field of industrial process control,a fast-development platform for programmable logic controller(PLC)systems is designed in order to solve two main problems of rapid development of PLC control system and programmability of controlling software.In the aspect of design,the platform is composed of hardware controlling and software monitoring and is taking industrial computer as the core.Under the Windows environment,the platform establishes the control instruction set,develops the configuration function and visual programming function of the monitoring software and it integrates PLC controller based on Visual Basic software.In order to achieve the function of data monitoring,it has realized the serial communication between computer and PLC by using RS-485 and RS-232 serial ports line communication.The platform designs the intelligent instruction scheduling strategy by studying the encoding and decoding rules of the communication instruction set.It proposes a method for rapidly developing control programs by adopting the expert control mode,which enables clients to develop and modify programs conveniently by importing instructions in a non-coded manner.After experimental testing,the platform is proved successful achieving both the rapid development of PLC control system and the rapid modification of monitoring software.展开更多
The principle and working process of Vacuum Resin Shot Dosing Equipment(VRSDE) are analyzed and the characteristics of IP1612-220PLC (Programmable Logical Controller) areintroduced briefly at first. Then the authors d...The principle and working process of Vacuum Resin Shot Dosing Equipment(VRSDE) are analyzed and the characteristics of IP1612-220PLC (Programmable Logical Controller) areintroduced briefly at first. Then the authors discuss the flow of program, the assignment of PLCI/O ports, the wiring diagram, and the ladder logic program of the PLC control system of VRSDE indetail. Some application issues of the system are accounted for in addition. Finally, according tothe information acquired from users, the authors draw the conclusion: this system owns a highreliability and a-vailability and greatly improves the automatic degree of VRDE.展开更多
This article deeply analyzed the important value of the application of PLC automatic technology control in China, and put forward the specific application of PLC control technology in the electrical engineering indust...This article deeply analyzed the important value of the application of PLC automatic technology control in China, and put forward the specific application of PLC control technology in the electrical engineering industry automation technology control, in order to effectively promote the continuous development and continuous improvement of automation technology control in China's electrical engineering industry.展开更多
This paper proposes to adopt SCADA and PLC technology for the improvement of the performance of real time signaling&train control systems in metro railways.The main concern of this paper is to minimize the failure...This paper proposes to adopt SCADA and PLC technology for the improvement of the performance of real time signaling&train control systems in metro railways.The main concern of this paper is to minimize the failure in automated metro railways system operator and integrate the information coming from Operational Control Centre(OCC),traction SCADA system,traction power control,and power supply system.This work presents a simulated prototype of an automated metro train system operator that uses PLC and SCADA for the real time monitoring and control of the metro railway systems.Here,SCADA is used for the visualization of an automated process operation and then the whole opera-tion is regulated with the help of PLC.The PLC used in this process is OMRON(NX1P2-9024DT1)and OMRON’s Sysmac studio programming software is used for developing the ladder logic of PLC.The metro railways system has deployed infrastructure based on SCADA from the power supply system,and each station’s traction power control is connected to the OCC remotely which commands all of the stations and has the highest command priority.An alarm is triggered in the event of an emergency or system congestion.This proposed system overcomes the drawbacks of the current centralized automatic train control(CATC)system.This system provides prominent benefits like augmenting services which may enhance a network’s full load capacity and networkflexibility,which help in easy modification in the existing program at any time.展开更多
In this paper, the role of the air-conditioning system in the quay crane electrical room is described comprehensively. Taking the quay crane air-conditioning system of Guangzhou container terminal as an example, there...In this paper, the role of the air-conditioning system in the quay crane electrical room is described comprehensively. Taking the quay crane air-conditioning system of Guangzhou container terminal as an example, there are certain defects in the working process. Then, the feasibility of PLC optimal control of the quay crane air-conditioning system is mentioned, and in-depth thinking is carried out. At the same time, the air-conditioning system is analyzed for maintenance management.展开更多
研究基于可编程逻辑控制器(Programmable Logic Controller,PLC)的智能工业机器人控制系统,提出一种集成工业机器人、PLC、机器视觉系统及射频识别(Radio Frequency IDentification,RFID)模块的生产线控制方案。通过详细的硬件选型、通...研究基于可编程逻辑控制器(Programmable Logic Controller,PLC)的智能工业机器人控制系统,提出一种集成工业机器人、PLC、机器视觉系统及射频识别(Radio Frequency IDentification,RFID)模块的生产线控制方案。通过详细的硬件选型、通信机制确定以及软件编程,使该系统能够在复杂多变的生产环境中实现精准高效的自动化操作。调测结果表明,系统在搬运、分拣和组装等工艺流程中表现出高度的稳定性和灵活性。展开更多
基金Shandong University of Science and Technology Spring Buds Program(No.2010AZZ170)
文摘The control method of rubber tyre gantry （RTG） spreader in Qingdao Port Container Terminal is logic board control,which has many shortcomings such as expensive spare parts and high faults.This paper designs a new control system using programmable logic controller （PLC） centralized control to replace the original logic board control.The new system mainly contains complete ELME spreader control scheme design,hardware selection and PLC control program development.Its field application shows that the system has characteristics of high efficiency,low running cost,easy maintenance.
基金Supported by the International S&T Cooperation Program of China(No.2014DFR70280)Key Research and Development Project of Shanxi Province(No.201903D321012)+1 种基金Key Research and Development Project of Shanxi Province(No.201903D121023)Patent Promotion and Implementation Funding Research Project of Shanxi Province(No.20210521).
文摘In the field of industrial process control,a fast-development platform for programmable logic controller(PLC)systems is designed in order to solve two main problems of rapid development of PLC control system and programmability of controlling software.In the aspect of design,the platform is composed of hardware controlling and software monitoring and is taking industrial computer as the core.Under the Windows environment,the platform establishes the control instruction set,develops the configuration function and visual programming function of the monitoring software and it integrates PLC controller based on Visual Basic software.In order to achieve the function of data monitoring,it has realized the serial communication between computer and PLC by using RS-485 and RS-232 serial ports line communication.The platform designs the intelligent instruction scheduling strategy by studying the encoding and decoding rules of the communication instruction set.It proposes a method for rapidly developing control programs by adopting the expert control mode,which enables clients to develop and modify programs conveniently by importing instructions in a non-coded manner.After experimental testing,the platform is proved successful achieving both the rapid development of PLC control system and the rapid modification of monitoring software.
文摘The principle and working process of Vacuum Resin Shot Dosing Equipment(VRSDE) are analyzed and the characteristics of IP1612-220PLC (Programmable Logical Controller) areintroduced briefly at first. Then the authors discuss the flow of program, the assignment of PLCI/O ports, the wiring diagram, and the ladder logic program of the PLC control system of VRSDE indetail. Some application issues of the system are accounted for in addition. Finally, according tothe information acquired from users, the authors draw the conclusion: this system owns a highreliability and a-vailability and greatly improves the automatic degree of VRDE.
文摘This article deeply analyzed the important value of the application of PLC automatic technology control in China, and put forward the specific application of PLC control technology in the electrical engineering industry automation technology control, in order to effectively promote the continuous development and continuous improvement of automation technology control in China's electrical engineering industry.
文摘This paper proposes to adopt SCADA and PLC technology for the improvement of the performance of real time signaling&train control systems in metro railways.The main concern of this paper is to minimize the failure in automated metro railways system operator and integrate the information coming from Operational Control Centre(OCC),traction SCADA system,traction power control,and power supply system.This work presents a simulated prototype of an automated metro train system operator that uses PLC and SCADA for the real time monitoring and control of the metro railway systems.Here,SCADA is used for the visualization of an automated process operation and then the whole opera-tion is regulated with the help of PLC.The PLC used in this process is OMRON(NX1P2-9024DT1)and OMRON’s Sysmac studio programming software is used for developing the ladder logic of PLC.The metro railways system has deployed infrastructure based on SCADA from the power supply system,and each station’s traction power control is connected to the OCC remotely which commands all of the stations and has the highest command priority.An alarm is triggered in the event of an emergency or system congestion.This proposed system overcomes the drawbacks of the current centralized automatic train control(CATC)system.This system provides prominent benefits like augmenting services which may enhance a network’s full load capacity and networkflexibility,which help in easy modification in the existing program at any time.
文摘In this paper, the role of the air-conditioning system in the quay crane electrical room is described comprehensively. Taking the quay crane air-conditioning system of Guangzhou container terminal as an example, there are certain defects in the working process. Then, the feasibility of PLC optimal control of the quay crane air-conditioning system is mentioned, and in-depth thinking is carried out. At the same time, the air-conditioning system is analyzed for maintenance management.
文摘研究基于可编程逻辑控制器(Programmable Logic Controller,PLC)的智能工业机器人控制系统,提出一种集成工业机器人、PLC、机器视觉系统及射频识别(Radio Frequency IDentification,RFID)模块的生产线控制方案。通过详细的硬件选型、通信机制确定以及软件编程,使该系统能够在复杂多变的生产环境中实现精准高效的自动化操作。调测结果表明,系统在搬运、分拣和组装等工艺流程中表现出高度的稳定性和灵活性。
