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Design of PLC Control System for Automatic Door
Jiangshan Gao, Yan Zhi
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105891
Abstract:
The core of automatic door is its control system. The basic principle of au-tomatic door control system is to use PLC to output digital signal and analog signal to inverter to change working power frequency and drive motor steering, drive motor frequency conversion, change direction operation, drive automatic door to realize door opening and closing operations at different speeds. When the signal acquisition device of the automatic door detects whether a person or an object has passed, the automatic door can be automatically opened and closed to realize the function of the person coming to the door and the person to close the door. The system designed in this paper not only completes the opening and closing of the automatic door at different speeds under different conditions, but also adds more safety protection, such as anti-pinch control, emergency stop and system fault self-test, to achieve the expected design effect. The automatic door control system has the characteristics of higher safety, ease of use and stability.
Design of the Automatic Spreader Control System Based on Embedded System  [cached]
Yinglin Li,Lianhe Yang,Fang Ma,Yingzhong Li
Computer and Information Science , 2009, DOI: 10.5539/cis.v1n4p72
Abstract: The control system of the traditional automatic spreader with complex structure and inconvenient servicing is designed based on MCU, and the new control system is designed based on the embedded system. Based on the analysis of the work process and work principle for the automatic spreader, we put forward the new scheme to improve the design of the control system for traditional spreader and design the hardware structure and relative software. The new control system can not only actualize the automatic control for the spreader and possess many functions such as spreading tier setup and automatic cloth edge alignment, but also possess the functions including network and system extension and effectively reduce the price of automatic spreader, and the improved spreader will possess stronger functions, more convenient operation and simpler maintenance.
The Design of Automatic Temperature Control System for the Dyeing Machine  [cached]
Jing Dai
Modern Applied Science , 2009, DOI: 10.5539/mas.v2n5p72
Abstract: This article analyzed the temperature control system of the dyeing machine in the textile industry, adopted the technology of PLC to automatically control the temperature and realized the automatic temperature adjustment in the work process of the dyeing machine. The spot adjustment proved that this method could fulfill the basic requirement of the dyeing machine to the temperature.
Design and development of semi-automatic cutting machine for young coconuts
Satip Rattanapaskorn
Maejo International Journal of Science and Technology , 2008,
Abstract: The purpose of this research is to design, fabricate, test, and evaluate the prototype of a semi-automatic young coconut fruit cutting machine. The design concept is that fruit cutting is accomplished by pneumatic press on a young coconut sitting on a sharp knife in a vertical plane. The machine consists of 5 main parts: 1) machine frame, 2) cutting base, 3) knife set, 4) pneumatic system, and 5) tanks receiving coconut juice and cut fruits. The machine parts contacting edible parts of the fruit are made of food-grade stainless steel. In operation, a young coconut is placed on the cutting base and the pneumatic control is switched on. The coconut is automatically moved to the pressing unit and cut in half by a knife set. The coconut juice flows down to the tank while the cut fruits are separated and moved into the other tank. The machine is found to operate safely without damage to the fruits. The machine capacity is 480 fruits/hr with the total operating cost of about 2.63 USD/1000 fruits.
Unfalsified Control; Application to automatic flight control system design
Andrei-Sorin NEAMTU,Adrian-Mihail STOICA
INCAS Bulletin , 2011, DOI: 10.13111/2066-8201.2011.3.3.11
Abstract: Unfalsified Control Theory has been developed to provide a way for avoiding modeling uncertainties in controller design. It belongs to the class of control methods called Adaptive Supervisory Switching Control, which work by introducing in the control scheme a supervisory unit which chooses, from a set of candidate controllers the one most suited for the current plant. Unfalsified Control works by using a switching logic that dispenses with the need for a-priori knowledge of the dynamic model. At discrete moments of time, using the input/output data recorded up to that point, the supervisory calculates for each candidate controller a performance index, and compares it to a given threshold. Controllers surpassing that threshold are removed from the candidate controller set. This process is called falsification. If the controller in the loop is one such falsified controller it is replaced. In this paper we investigate the suitability of this method for aeronautical control applications. We review the theory behind this control scheme and adapt it to the case of controlling a fighter aircraft. We also provide a case study, where we test this control scheme on a simulated fighter aircraft.
Development of Automatic Person Detection System to Control AC Fan & Room Lights
RAHUL MISHRA,SHAHIDRAZA,ZULQUARNAIN,RACHNAARYA
International Journal of Innovative Research in Science, Engineering and Technology , 2013,
Abstract: The work on “Development of automatic person detection system to control electrical fan and lights” using Microcontroller is a reliable circuit that takes over the task of controlling the room lights in museums very accurately. When somebody enters into the Museum then the light in the museum will be switched ON and count also incremented by one when any one leaves the room then count will be decremented by one. If the total count will be zero, the light will be automatically switched OFF. The microcontroller does the above job. It receives the signals from the sensors, and this signal is operated under the control of software which is stored in ROM. Pic Microcontroller 16F887A continuously monitor the sensors, A IR Sensor is which controls the switching on/off of the light when it detects the any person entered into the museum. The implementation is made simpler by using sensor to detect person. The system includes IR sensor, microcontroller, LCD display and a 5v power is supplied to run the system. The system uses a compact circuitry built around pic microcontroller programs are developed in Embedded C. Flash magic is used for loading programs into Microcontroller.
Design and development of the CSNS ion source control system  [PDF]
Lu Yan-Hua,Li Gang,Ouyang Hua-Fu
Physics , 2013,
Abstract: After the CSNS ion source test stand has been stably working for years, an online control system for CSNS ion source aiming to be more stable and reliable is now under development. F3RP61-2L, a new PLC CPU module under Linux system, is introduced to the system as an IOC, to function together with the I/O modules of FA-M3 PLC on the PLC-bus. The adoption of the new IOC not only simplifies the architecture of the control system, but also improves the data transmission speed. In this paper, the design and development of the supervisory and control system for CSNS ion source are described.
Design of Artificial Intelligent Controller for Automatic Generation Control of Two Area Hydrothermal System  [cached]
Coppisetty Srinivasa Rao
International Journal of Electrical and Computer Engineering , 2012, DOI: 10.11591/ijece.v2i2.111
Abstract: This paper presents the design of controller based on the principles of Neural networks. The concept of artificial intelligent techniques greatly helps in overcoming the disadvantages posed by the conventional controllers. A hierarchical architecture of three layer feed forward neural network (NN) is proposed for controller design based on back propagation algorithm (BPA). Area Control Error (ACE) is considered as input to the neural network controller and the output of the controller is provided to the governor in each area. The proposed controllers are tested for a two area hydrothermal system. Simulation results show that the limitations of conventional controller can be overcome by including Neural concept and thereby the dynamic response of the system with respect to peak time, overshoot and settling time can be improved drastically. Keywords: Automatic Generation Control, Hydrothermal system, Neural network, Back propagation algorithm, Area control error
DESIGN OF AUTOMATIC CHANGE OVER SWITCH WITH GENERATOR CONTROL MECHANISM
L.S. Ezema,B.U. Peter,O.O. Harris
Academic Research International , 2012,
Abstract: Power supply in Nigeria and most developing countries of the world is anything but stable.This has adverse effects on the consumers of the electricity and the equipments that are operated from the mains sources of electricity supply in these parts of the world. In this paper, we provide an automatic switching mechanism that transfers the consumer loads to a power source from a generator in the case of power failure in the mains supply. It automatically detects when power has been restored to the mains supply and returns the loads to this sourcewhile turning off the power from the generator set. This mechanism has been tested and we recorded a great result. It thus holds an important key in the provision of a continuous power supply through a near seamless switching between the mains supply and an alternative standbysource like the generator set.
DEVELOPMENT OF AN AUTOMATIC CONTROL SYSTEM OF MODES OF FOREST CLEANING CUTTING Разработка автоматизированных систем управления режимами рубок ухода за лесом  [PDF]
Petrovskiy V. S.,Malyshev V. V.,Murzinov Y. V.
Polythematic Online Scientific Journal of Kuban State Agrarian University , 2012,
Abstract: In the article the methods of the development of mathematical models of growth of even-aged stands is considered. We have developed the mathematical provision of the automated control systems (ACS) of modes of cleaning cutting of a forest with the target function of the productivity of forest stands. We have also obtained the numerical performance of the ACS modes of forest cleaning cuttings by means of the results of the experiments
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