A special PLC is designed for the control system of garbage truck,based on the feature and applications of vehicular electrical device.The purpose is developing a kind of mature products to control the hydraulic syste...A special PLC is designed for the control system of garbage truck,based on the feature and applications of vehicular electrical device.The purpose is developing a kind of mature products to control the hydraulic system.The general design plans are described,in detail,and the design points are analyzed and summarized.展开更多
To make magnetic separator more excellent in beneficiation, an advanced automatic control system for magnetic separator was designed. This paper designs automatic control system for magnetic separators, combination wi...To make magnetic separator more excellent in beneficiation, an advanced automatic control system for magnetic separator was designed. This paper designs automatic control system for magnetic separators, combination with PLC and technology of vary frequency. This system can wholly supervise and control the parameters of work course of magnetic separators.展开更多
This paper designs a set of ventilation and dust removal in coal mine test device and PLC monitoring system. The ventilation and dust removal test device has a set of ventilation and dust removal functions, can automa...This paper designs a set of ventilation and dust removal in coal mine test device and PLC monitoring system. The ventilation and dust removal test device has a set of ventilation and dust removal functions, can automatically monitor air volume, air pressure, resistance and other performance parameters of ventilator and precipitator. The PLC monitoring system can remotely start and stop the variable frequency speed control on the ventilation machine and dust collector, and it can real-time monitor operation state, such as the running current and the parameters of ventilator and dust collector. The paper simulate and realize computer remote centralized monitoring of underground ventilation for mine ventilation system. The actual application shows that： the system is stable and reliable, simple operation, strong scalability.展开更多
Aiming at the existing problems of safety, reliability and flexibility in the traditional coal mine belt transport system, this paper designed the mine centralized control system transmitted by CAN bus and PLC as the ...Aiming at the existing problems of safety, reliability and flexibility in the traditional coal mine belt transport system, this paper designed the mine centralized control system transmitted by CAN bus and PLC as the core, and use comparison instructions and trigger of Siemens S7-200 PLC, the article has elaborated the four level conveyor belt sequence control, realized the sequence start, reverse sequence stop and fault processing and other functions for four level conveyor belt, the compared with traditional timer control instructions scheme, the design has clear thinking, simple design program, and is easy to be extended to multilevel belt drive sequence control.展开更多
With consideration to the acid gas incinerator burned and the problems identified during its application, renovation program has been proposed. According to the new design, draught burners with automatic control syste...With consideration to the acid gas incinerator burned and the problems identified during its application, renovation program has been proposed. According to the new design, draught burners with automatic control system shall be used to eliminate problems encountered during application of original burner. In addition to implement automatic control of combustion processes, the new system may minimize labor intensity and enhance safety of facilities.展开更多
This paper presents the solution of regulating the wind rate automatically by means of fuzzy control technology and implementing it with PLC (programmable logical controller) under the circumstance of many influence f...This paper presents the solution of regulating the wind rate automatically by means of fuzzy control technology and implementing it with PLC (programmable logical controller) under the circumstance of many influence factors, which exists in the axial flow fans wind rate regulation system during the process of mine ventilation, and has difficulty in modifying the mathematic model to obtain the satisfied result by normal control ways. According to this analysis, the intelligent and analytic treatment of fuzzy controller has been made and fuzzy control scheme involving self regulation divisor and intelligent integral has been deeply proposed. Test result shows that this system based on the scheme above is obviously prior to others in its responsibility such as high speed, overshoot, control precision and robustness. The system furnishes the great reliability of mine working safety and fans running efficiency.展开更多
A remote control system for the ECR ion source and LEBT device based on Siemens S7-300 PLC is introduced in the paper.A PROFIBUS-DP is used to exchange message between the host-computer and PLC.Human Machine Interface...A remote control system for the ECR ion source and LEBT device based on Siemens S7-300 PLC is introduced in the paper.A PROFIBUS-DP is used to exchange message between the host-computer and PLC.Human Machine Interface(HMI)is developed by Siemens WinCC software,with the functions of interlock,control,and data acquisition.Some detail problems such as structure,reconstructing incontrollable equipment,hardware and software designing are presented.展开更多
文摘A special PLC is designed for the control system of garbage truck,based on the feature and applications of vehicular electrical device.The purpose is developing a kind of mature products to control the hydraulic system.The general design plans are described,in detail,and the design points are analyzed and summarized.
文摘To make magnetic separator more excellent in beneficiation, an advanced automatic control system for magnetic separator was designed. This paper designs automatic control system for magnetic separators, combination with PLC and technology of vary frequency. This system can wholly supervise and control the parameters of work course of magnetic separators.
文摘This paper designs a set of ventilation and dust removal in coal mine test device and PLC monitoring system. The ventilation and dust removal test device has a set of ventilation and dust removal functions, can automatically monitor air volume, air pressure, resistance and other performance parameters of ventilator and precipitator. The PLC monitoring system can remotely start and stop the variable frequency speed control on the ventilation machine and dust collector, and it can real-time monitor operation state, such as the running current and the parameters of ventilator and dust collector. The paper simulate and realize computer remote centralized monitoring of underground ventilation for mine ventilation system. The actual application shows that： the system is stable and reliable, simple operation, strong scalability.
文摘Aiming at the existing problems of safety, reliability and flexibility in the traditional coal mine belt transport system, this paper designed the mine centralized control system transmitted by CAN bus and PLC as the core, and use comparison instructions and trigger of Siemens S7-200 PLC, the article has elaborated the four level conveyor belt sequence control, realized the sequence start, reverse sequence stop and fault processing and other functions for four level conveyor belt, the compared with traditional timer control instructions scheme, the design has clear thinking, simple design program, and is easy to be extended to multilevel belt drive sequence control.
文摘With consideration to the acid gas incinerator burned and the problems identified during its application, renovation program has been proposed. According to the new design, draught burners with automatic control system shall be used to eliminate problems encountered during application of original burner. In addition to implement automatic control of combustion processes, the new system may minimize labor intensity and enhance safety of facilities.
文摘This paper presents the solution of regulating the wind rate automatically by means of fuzzy control technology and implementing it with PLC (programmable logical controller) under the circumstance of many influence factors, which exists in the axial flow fans wind rate regulation system during the process of mine ventilation, and has difficulty in modifying the mathematic model to obtain the satisfied result by normal control ways. According to this analysis, the intelligent and analytic treatment of fuzzy controller has been made and fuzzy control scheme involving self regulation divisor and intelligent integral has been deeply proposed. Test result shows that this system based on the scheme above is obviously prior to others in its responsibility such as high speed, overshoot, control precision and robustness. The system furnishes the great reliability of mine working safety and fans running efficiency.
文摘A remote control system for the ECR ion source and LEBT device based on Siemens S7-300 PLC is introduced in the paper.A PROFIBUS-DP is used to exchange message between the host-computer and PLC.Human Machine Interface(HMI)is developed by Siemens WinCC software,with the functions of interlock,control,and data acquisition.Some detail problems such as structure,reconstructing incontrollable equipment,hardware and software designing are presented.
