This article designed a monitoring system about single unit for air-source heat pump water heater which is based on kingview as epigynous machine and Mitsubishi programmable logic controller(PLC) as hypogynous *** thi...
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ISBN:
(纸本)9781509046584
This article designed a monitoring system about single unit for air-source heat pump water heater which is based on kingview as epigynous machine and Mitsubishi programmable logic controller(PLC) as hypogynous *** this system,the pid control algorithm as temperature control provides important protection for the stable operation of the water *** system realizes some important functions such as a user login,the real-time data-logging,alarming,printing of the parameter and data,record checking and so on.
In this paper, in order to ensure stable and efficient operation of a pilot-scale modified A(2)/O (anoxic/anaerobic/aerobic/pre-anoxic) -MBR plant, the automatic control system based on PLC is designed and introduced ...
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ISBN:
(纸本)9783037854174
In this paper, in order to ensure stable and efficient operation of a pilot-scale modified A(2)/O (anoxic/anaerobic/aerobic/pre-anoxic) -MBR plant, the automatic control system based on PLC is designed and introduced from the views of system configuration and unit control methods. The master computer undertakes the monitoring and managing task by Siemens WINCC 7.0 configuring software, while the slave computer implements the function of data collection and automatic control based on Siemens S7-300 PLC. Intelligent pid algorithm is utilized to precisely control the influent flow rate, recycled flow rate and DO concentration in aerobic tank in this system. The commissioning. and operation practice has proved that the PLC-based automatic control system greatly improved the degree of automation and achieved high nutrient removal efficiency in this plant.
Control core of Intelligent automatic patrol car track (photovoltaic group) uses G128 chip, which function modules include: laser sensor, speed control module, the servo control module. The basic principle is that the...
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ISBN:
(纸本)9783038353140
Control core of Intelligent automatic patrol car track (photovoltaic group) uses G128 chip, which function modules include: laser sensor, speed control module, the servo control module. The basic principle is that the control center sends a signal to the laser sensor module, which controls laser tube launching and receives data by laser receiver returning. According to the data of the receiver, the core module synchronously controls servo module and the speed module. The main program uses a pid algorithm by C language.
In this study, the optimization of a pid routing algorithm implemented by a mobile robot that tries to reach its destination by avoiding obstacles is described. Simiam mobile robot application which has been done in t...
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ISBN:
(纸本)9781538668788
In this study, the optimization of a pid routing algorithm implemented by a mobile robot that tries to reach its destination by avoiding obstacles is described. Simiam mobile robot application which has been done in this subject has been examined. Simiam mobile robot using pid algorithm can not avoid obstacles when changing the obstacle in the environment. The Simiam test environment was used to demonstrate the effectiveness of the algorithm used. It has been observed that pid optimization produces a successful result in a test environment in which the position of the obstacles changes when the simulation outputs are examined.
Electrospinning, which is a technology to make nano fiber, has quite high requirements of the speed of feeding. In order to solve the unstable phenomenon, salivation, and achieve the stability of quality, numerical si...
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ISBN:
(纸本)9783037852828
Electrospinning, which is a technology to make nano fiber, has quite high requirements of the speed of feeding. In order to solve the unstable phenomenon, salivation, and achieve the stability of quality, numerical simulation is used to compute the nozzle exit pressure and exit velocity, while recursive least squares is used to identify of the results of the simulation. At last, pid algorithm and recursive least squares methods are combined together to form a model for the feeding system controller. And the pneumatic device and pressure sensor are used to build electrospinning feeding system. Finally, experimental verification PEO solution is used to verify this method, no drooling electrospinning phenomenon happens.
The liquid level accurate control of multiple water tanks system has become a research focus due to the nonlinear process and multiple variables. The experimental platform of multiple water tanks system is designed ba...
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ISBN:
(纸本)9783642286575;9783642286582
The liquid level accurate control of multiple water tanks system has become a research focus due to the nonlinear process and multiple variables. The experimental platform of multiple water tanks system is designed based on the network control systems-4000 (NCS4000) in order to study and implement the advanced PI D control for this system. The mathematical model of the system is established. Finally the Lyapunov approach is used to design the pid controller for the multiple water tanks system. Therefore the experiments proved the effectively and accuracy of the pid control method for the liquid level control of platform.
While a pendulum swings freely in fluid, the number of swings reflects the effect of fluid damping. Swinging during a fixed period as a gravity pendulum of a certain weight, the swing of the pendulum decays faster if ...
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ISBN:
(纸本)9781538630136
While a pendulum swings freely in fluid, the number of swings reflects the effect of fluid damping. Swinging during a fixed period as a gravity pendulum of a certain weight, the swing of the pendulum decays faster if the damping is larger, and more slowly if the damping is smaller [1]. An active pendulum device for damping measurement is presented in this paper. By measuring the power of the pendulum compensation when the pendulum swings with the same amplitude and frequency in fluids with different damping effects, the device can calculate the overall effect of fluid damping. First, a conical pendulum mechanical model of a free pendulum is established based on the principle of virtual displacement and D'Alembert's principle, and then the space trajectory of free pendulum motion and conical motion is studied by solving the Lagrange equation and taking into consideration the motion law of free swing compensation. Next, the pid algorithm is used to analyze the pendulum attitude data measured by the sensor, adjust the wind speed of the DC fan output and maintain the dynamic balance of the pendulum. The pendulum tested in the fan drive performs a simple harmonic swing in different fluids according to the given amplitude and frequency. The power of the system compensation is related to the fluid damping.
The article analyses a auto-tuning method for a fuzzy pid controller based on the relay experiment. The algorithm was implemented and tested on a real plant for redox agent stabilisation in a paper mill. Experiments h...
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ISBN:
(纸本)9783319071725;9783319071732
The article analyses a auto-tuning method for a fuzzy pid controller based on the relay experiment. The algorithm was implemented and tested on a real plant for redox agent stabilisation in a paper mill. Experiments have discovered some unsolved, practical problems which were discussed in the paper i.e. determination of the ON-OFF parameters, the non-shocked switching from the ON-OFF tuning algorithm into a continues fuzzy pid algorithm.
In the paper a method for the design of the control system is presented. With the use of an evolutionary methods an initial structure of the controller is adjusted such that the designed controller fulfills the contro...
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ISBN:
(纸本)9783319393780;9783319393773
In the paper a method for the design of the control system is presented. With the use of an evolutionary methods an initial structure of the controller is adjusted such that the designed controller fulfills the control objective in the best way possible. This elastic structure consists of basic functional blocks and filters. The proposed method is able to find such the structure and parameters of the controller, which make it immune to measurement noise that could disrupt the work of the control system. As a result, the process of controller design is performed easier and faster.
In this paper,the morphing trailing edge is designed to achieve the up and down defection under the aerodynamic *** a detailed and accurate computational analysis to determine the SMA specifcations and layout programs...
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In this paper,the morphing trailing edge is designed to achieve the up and down defection under the aerodynamic *** a detailed and accurate computational analysis to determine the SMA specifcations and layout programs,a solid model is created in CATIA and the structures of the morphing wing trailing edge are produced by CNC machining.A set of DSP measurement and control system is designed to accomplish the controlling experiment of the morphing wing trailing *** last,via the force analysis,the trailing edge is fabricated with four sections of aluminum alloy,and the arrangement scheme of SMA wires is *** of precise control integral has been performed to survey the control *** experiment consists of defection angle tests of the third joint and the integral ***,the ultimate defection angle is tested in these two ***,the controlling experiment of different angles could be performed within this *** results show that the defection error is less than 4%and response time is less than 6.7 s,the precise controlling of the morphing trailing edge is preliminary realized.
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