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In the modern industrial production, level of equipments and vessels is checked and controlled usually. According to volume delay of double tank and disadvantage of single loop low properties, introduces Cascade control scheme. This paper selects controller based on Siemens S7-200 and control strategy based on PID, It realizes high-precision control and real-time display of double water tank by PLC...
The system introduced here is an experimental study which helps in controlling the characteristics and ON/OFF states of a control valve. A graphical user Interface has been developed using supervisory control and data acquisition (SCADA) and the programming of the control system has been done using programmable logic control (PLC). A descriptive study has been incorporated in this paper to formulize...
This paper presents the control system of the pipeline loop leakage test system and describes the structure of the hardware and software of the control system. Field applications show that the control system not only can collect the parameters of the pipeline loop but also make the pipeline loop leakage test system run in steady state.
In this paper, a mining automatic drainage monitoring and control system based on Siemens PLC is designed according to the actual situation of the central pump house of some coal mine. The specific principle of the automatic drainage monitoring and control system is introduced. The flow chart of the main system control program is given. The algorithm implementation of the of instantaneous and accumulative...
As the central air conditioning, design of improved fuzzy adaptive PID controller. It will achieve dynamic data exchange between MATLAB and PLC, using OPC technology to achieve intelligent control.
The performance of thermal power plant fly ash conveying system depends largely on its control system performance. The control strategy of the backward and control scheme is not reasonable will constrain the conveyance of the dust the normal operation of the system, which affects the normal operation of the power production. Based on a power plant unit 2 25Mw control ash system performance requirements,...
The system applies PLC of OMRON CJ1M-series as a lower control computer to conduct a field control in the KK Filter system of Jilin Chemical Fiber group. It utilizes King view 6.53 for PC monitor. The paper mainly describes the application and the communication of PLC and inverter in this system. Then the design of operating screen in PC, the attention about the installation of communication lines...
The old drawbead test bed, which can not satisfy the requirement of new experiment and research, has the problems such as seriously equipments aging, less test mode and high energy consumption. By adopting PLC control system based on the field bus (CAN-BUS) instead of relay control system in the new test bed, the new electric control system of drawbead test bed which makes the scope of the test bed...
This paper mainly introduces the application of FX-ON40MR PLC in the hydraulic control system of SZ-40 injection molding machine, the working principle of the hydraulic system in addition to the hardware and software used in PLC control system. The advanced design have endowed the molding machine advantages as follow: simple operation, high reliability, strong anti-interference ability and simple...
In order to ensure the sewage treatment equipment operation cycle and the suction pump intermittent work and realize automatic SBMBR sewage treatment equipment intelligently, this paper selected MITSUBISHI FX2N series PLC to introduce SBMBR sewage treatment system for control system. By analyzing of automatic control system targets, program design process is given. Eventually, designed automatic control...
Developing monitoring in Distributed Control System is a major industrial concern since those systems are more and more complex and involved in many safety critical application fields. The Distributed Control System (DCS) is being widely used in Power, Steel manufacturing, Oil and Gas, and Petrochemicals for monitoring, advance process control, regulatory and sequential control and various other functions...
The biomass energy is a kind of renewable resources. After using the prototyping machine to press bio-energy into block in ordinary temperature, it can be used as a fuel. This paper introduces a kind of two-way extrusion fuel prototyping machine, which can transform crop stalks into the biomass energy by normal forming technology. This system uses Siemens S7-200 PLC as the control core, and by programming...
In this study we discussed automatic transmission method of vehicles utilizing fuzzy technology and composed a control unit using PLC( programmable logical controller) and HMI(human machine interface). With characteristic of complexities of vehicle automatic transmission and it is difficult to set up exact mathematic model, using practice experience of driver to form the fuzzy control rules. The rules...
With the techniques of mechantronics and pneumatics, this paper has developed the automatic conveying system for dangerous goods that consists of a vehicle and a manipulator. The vehicle transports the barrels with dangerous goods to the designated place; the manipulation pours out the dangerous goods from the barrel and puts back the barrel on the vehicle. The control subsystem is master-slave mode...
The base of operating magnetic-valve controllable reactor (MCR) is the power electronics device which can create steady pulses. In this paper, a model of MCR is introduced and a novel control device for the MCR is proposed, this device uses a special circuit to get a synchro signal from line-to-line voltage first, and then divided into six controllable trigger pulses precisely, the method can be implemented...
This paper presents the modeling and control of a nonlinear coupled three tank system (CTTS). In this work, nonlinear state space dynamics of CTTS are derived. The objective is to control the level and temperature of water in each tank. The control is achieved using classical nonlinear feedback linearization technique. Input and output scaling is done according to the interface with a standard PLC...
A supervisory and control system for oil tanks area based on PLC S7-300 and configuration software Force-Control is introduced in this paper. The hardware structure of the system and the software design are both described in detail. In this system, Superior computers communicate with PLC through Industrial Ethernet. The superior computers system adopts duplex redundancy and the PLC adopts software...
The KSTAR components requiring cryogenic helium coolant for superconducting magnet operations are connected to the helium refrigeration system (HRS) through the helium distribution system (HDS), the final helium distribution station. Twenty eight cryogenic valves including 4 quench protecting valves, many sensors such as temperature sensors, pressure transmitters, and flowmeters are mounted on the...
An intelligentized, comprehensive and high efficiency test system of solenoid valve for oil medium is designed in this paper, aiming to the disadvantage of current test devices in most solenoid valve factories in China. Serial communication of OPC-SERVER, sequential control of PLC, frequency conversion speed regulation technology and data acquisitions by LabVIEW are all achieved in this system; modeling...
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