Design Of Automatic Control System Research Articles

Feedback Control of the Plate Heating Process with Optimization of the Locations of Sources and Control

We consider the synthesis problem for concentrated controls of the plate heating process, where the locations of heat sources and state control are both optimized. For its numerical solution, we obtain formulas for the gradient of the objective functional using efficient first-order optimization methods. We present the results of computer experiments. The proposed approach can be used in the design of automatic control systems for many other processes and objects with distributed parameters.

Design of Automatic Control Systems at Loader Output of Snap Gauge Machine in Manufacturing Industry

The process of making an engine valve is through a machining process in the machining area. One of the machines in the machining area is a snap gauge machine. This snap gauge machine is used for the engine valve dimension inspection process. In this snap gauge machine, there is a section called the output loader. The existing condition is the low height of the output loader. This causes the operator to bend when carrying out the engine valve. The impact is on the decline of operator morality, especially the enthusiasm and level of operator fatigue at work. Next, we design a mechanism to increase the output loader height so that the inner process runs automatically. The design of the Automatic Output Loader is to automatically increase the output loader’s height. In this Automatic Output Loader it will use PLC as a control, programmed according to the desired working system and use the pneumatic cylinder as an increase in the output loader height. The height of the previous loader was 40 cm, after making this tool it increased to 65 cm and the operator did not have to bend again as before.

Vehicle vibration safety estimation area

It is known that the problem of mathematical modeling of the car vibration isolation system can be solved in the frequency and time domain. As the primary vehicle vibration isolation system has non-linear elements, the question arises: how does the linearized dynamic system solution in the frequency domain corresponding to the calculations of the accepted parameters in the time domain? The problem is solved at random kinematic perturbation from the road surface. Therefore, when working in the time domain to estimate the adequacy of solutions, it is necessary to make a choice of the method of statistical linearization from the known in practice design of automatic control systems. Four methods of statistical linearization are considered, using which calculations in the frequency domain have been carried out. For the chosen dynamic system with initial and statistically linearized nonlinear elements similar actions in the time domain were carried out. It is shown that the first method of statistical linearization is the most flexible, according to the amplitude-frequency response of the system. Such calculations were carried out for two surfaces corresponding to the cobblestone and subsoil roads at different speeds of the vehicle movement. The results of the research are separate-frequency and integral parameters. The last ones do not give any priority in the choice of the calculation field, under the condition of vehicle movement safety, i.e. there is no tire contact loss with the supporting surface.

Characteristics of humidity in classrooms with stack ventilation and development of calculation models of humidity based on the experiment

The purpose of the paper is to analyse air humidity in classrooms with stack ventilation. Based on experimental research, new humidity models in classrooms were developed. Experimental studies were conducted in five classrooms of the Faculty of Civil and Environmental Engineering at Bialystok University of Technology in north-eastern Poland (23°10′E, 53°08′N). The tests were performed for both unventilated classrooms and those ventilated by opening windows before and between classes. A linear increase in relative humidity during classes was reported in all classrooms. Stack ventilation provides a low, constant flow of air through the room. It should be noted that stack ventilation was equal to about 0.45 air changes per hour (ACH). The increase in relative humidity in rooms of this type depends primarily on the volume of the room and the number of people in the room. The developed models can be used in engineering practice for the design of automatic control systems in ventilation systems. The results indicate a need to control humidity in educational buildings. In this study, the approximate value of the moisture emitted by one class participant was also determined by comparing the moisture balance in the classroom and experimental data.

Design and Implementation of PLC Traffic Signal Intelligent Control System

Intelligent traffic signal system plays an indispensable role in the current intelligent system of urban transportation, and it plays a vital role in urban development and economic construction. PLC (Programmable Logic Controller) is a general-purpose industrial control device widely used in the design of automatic control systems for industrial automation and mechanical production. With its various functions, low price and easy to use, PLC has become more and more important in industrial production. This paper will design an intelligent traffic signal system based on PLC that can handle complex traffic conditions at intersections.

Design and Simulation of Automatic Temperature Control and Alert System Based PIC16F887

In this research, the design and simulation of an automatic system for temperature control using embeddedsystem in order to automatically control of multi appliances depend on the temperature value. The appliances will becontrolled are ventilation, cooling, heating and alert. This is an order to avoid or reduce to human intervention andincrease system reliability. An important feature of this automation process is to reduce or eliminate the possibility ofrelying on the human factor operator for industries, warehouses and laboratories, and to improve working andperformance environments. The system in this paper used the microcontroller PIC16F887 as the central control unit,LM35 temperature sensor as a temperature source,16x2 liquid crystal display (LCD) as indicator to display thedifferent system working status an addition to some of drivers, relay and light emitting diodes (LED) as indicators todisplay the corresponding working appliance driver. The implementation and simulation of the system work has beenachieved by using Proteus professional software v8.0 and mikroc pro for pic v.6.6.1 software to write the equivalentprogram and generate. Hex file for system working.

An Automatic Self-Tuning Control System Design for an Inverted Pendulum

A control problem of an inverted pendulum in the presence of parametric uncertainty has been investigated in this paper. In particular, synthesis and implementation of an automatic self-tuning regulator for a real inverted pendulum have been given. The main cores of the control system are a swing-up control method and a stabilisation regulator. The first one is based on the energy of an inverted pendulum, whereas the second one uses the linear-quadratic regulator (LQR). Because not all of the inverted pendulum parameter values are exactly known an automatic self-tuning mechanism for designed control system has been proposed. It bases on a devised procedure for identifying parameters. The entire derived control system enables effective a pendulum swing-up and its stabilisation at an upper position. The performance of the proposed control system has been validated by simulation in Matlab/Simulink environment with the use of the inverted pendulum model as well as through experimental works using the constructed inverted pendulum on a cart.

Design of ship course-keeping system via active disturbance rejection control

Abstract The article discusses the classic problem of ship course-keeping automatic control system design. The proposed design approach uses a relatively new methodology called Active Disturbance Rejection Control (ADRC). A comparative analysis of simulation results obtained via ADRC versus a traditional autopilot based on the PID algorithm was performed. The results obtained indicate a significantly higher efficiency of the ADRC autopilot compared to the PID variant. Another important positive feature of using ADRC control over PID is the elimination of the tuning problem.

The Design of a Microcontroller-based Automatic Liquid Level Control System

In this paper, a liquid level control system was designed and fabricated. Control of the liquid level was accomplished by adjusting the sup-ply voltage to a centrifugal pump that is delivering the liquid from a reservoir tank to an upper tank. The liquid level control system was implemented on an ATmega328 microcontroller. Three control strategies are implemented, manual mode, ON/OFF controller, and PID controller. Serial communication is used to establish the communication between the ATmega328 and a computer running MATLAB soft-ware. A graphical user interface was constructed to allow users to interact with the system. The system model is obtained using an experi-mental approach. The obtained model is then used for the design of the PID controller. Experimental results are provided to highlight the performance of the implemented controllers.

Arduino based Fan Speed Control System

The ascent of temperature on the planet can be caused because of a few elements like an unnatural weather change, ozone harming substance discharge and numerous other such factors. Climate change is one of the most discussed logical issues of the previous 20 years. The worldwide temperature of the earth has expanded on a normal of about 0.8 degree Celsius (1.4 degree Fahrenheit) since 1880. Since the control of this rising temperature is not in our hands, we have built a project that helps us control the speed of the fan in a room depending on the rise and fall of the room temperature. This paper discusses temperature based fan control fan speed control and monitoring the system using an Arduino system. The system uses an Arduino board to implement a control system. The study was conducted with the design and manufacture of automatic fan control system. Along with Arduino, we have use a temperature sensor LM35 to sense the temperature of the room. The fan control system discussed in this paper is economical, efficient and very reliable.

IoT based automatic monitoring system for water nutrition on aquaponics system

Aquaponics is an activity to cultivate plants and fish. Giving the organic liquid fertilizer as a nutrient enhancer will improve the quality of catfish and lettuce yields. However, this causes the water to become dirtier. The deteriorating water is characterized by the TDS value in aquaponic ponds exceeding 500 PPM. If the TDS value exceeds 500 PPM, water drainage will be applied. For treatment of aquaponic, experts use manual control. The system is designed to solve it. The method used in this Final Project is the study of literature to find the basic theory in aquaponics and analyze the problems. The next thing to do is designing the system, starting from the design of automatic control systems to remote monitoring systems. Afterwards, testing tools is conducted to see whether the system is able to run well. Based on the test results, the system can run well; however, a number of deviations are found, including the RTC test showing a delay time for 00.02.10 of RTC compared to the national standard time and an error of 2.4% found on a calibrated TDS sensor testing. The success rate of sending monitoring data is 100% of Antares connectivity testing.

ESTIMATION OF MEASUREMENT ERRORS IN A SINGLE-CHANNEL PLATFORM ANGULAR POSITIONING CONTROL SYSTEM BASED ON AN ANGULAR VELOCITY SENSOR

This work is devoted to the important problem of the contemporary automatic control theory – creation of integrated technologies of design of ACS (Automatic Control Systems). Such technologies must provide complex solution of the controlled object’s state evaluation and synthesis of the control law. The main practical result would be ACS accuracy increase. The new concept of ACS design for realization of integrated technologies conditions the urgency to confirm its efficacy’s by applied results in creation of concrete working systems. Research in this direction of automatic control theory is at its initial stage, at which it is important to evaluate possibilities of new technologies on simple ACS’ functioning models. The author presents a model of a one-channel attitude control system for a platform based on an angular velocity sensor providing instantaneous posterior estimation of platform’s rotation angle error. Values of the disturbance torque, acting on the platform, and angular velocity measurement errors on the considered observation interval are set as random numbers that stay constant on this interval. The author presents the analysis of control and state evaluation for the object of control, implemented by the synthesized system for two versions of the object: in the absence and in the presence of its own damping torque. The author demonstrates a modification of adjuster’s structure to achieve accuracy increase for the platform’s parameters evaluation.

Design and Development of Automatic Traffic Light control system

Design and Development of Automatic Traffic Light control system

Design of Dynamic Automatic Control System for Mariculture Water Quality under Internet of Things Environment

Zhang, S. and Chen, J., 2018. Design of dynamic automatic control system for mariculture water quality under internet of things environment. In: Liu, Z.L. and Mi, C. (eds.), Advances in Sustainable Port and Ocean Engineering. Journal of Coastal Research, Special Issue No. 83, pp. 637–641. Coconut Creek (Florida), ISSN 0749-0208.The dynamic automatic control system of mariculture water quality was proposed, the main control processor of system used Mini2440 development board. The data transmission module used ZigBee wireless communication module and USB WIFI module to complete the data transmission network, which was forwarded by the Zigbee router. The control part communicated through the communication module and the control cabinet of aquaculture pond site, so as to realize the remote control and dynamic automatic control for farming equipment. Users could complete the remote access through the monitoring platform. Experimental result shows that the system can effectively improve the level of dynamic management of mariculture water quality. It has superior control performance.

Design and Implementation of Automatic Vehicle Control and Accident Avoidance System

Design and Implementation of Automatic Vehicle Control and Accident Avoidance System

Sistem Kontrol Irigasi Sprinkler Otomatis Bertenaga Surya di Kelompok Tani Kecamatan Meureubo Kabupaten Aceh Barat

Penerapan teknologi irigasi sprinkler otomatis berbasis tenaga surya dapat dirancang dengan memanfaatkan teknologi digital, mikrokontroler dan jaringan sensor. Penelitian ini bertujuan untuk menganalisis kinerja sistem kontrol irigasi sprinkler otomatis bertenaga surya di lahan usaha tani. Penelitian ini dibagi dalam beberapa tahapan yaitu analisa tanah lahan percobaan, perancangan sistem kontrol otomatis dan jaringan irigasi sprinkler, pengujian dan penerapan lapang, dan analisis kinerja irigasi sprinkler otomatis. Mikrokontroler Arduino Uno ATMega328P digunakan sebagai sistem kendali otomatis untuk pengaturan on-off pompa irigasi berdasarkan kelembaban tanah yang dideteksi oleh YL-69 sensor kelembaban tanah. Berdasarkan hasil analisis kadar air tanah, pengaturan tingkat kelembaban tanah 13,58% sebagai nilai set point bawah dan 28,29% sebagai nilai set point atas untuk acuan pengaturan on-off pompa irigasi dapat menjaga kondisi tanah dari kapasitas lapang. Teknologi ini dioperasikan menggunakan tenaga surya yang terdiri dari panel surya 30 Wp, solar charge controller, rangkaian inverter dan baterai serta dapat beroperasi 24 jam secara kontinyu selama 7 hari. Hasil percobaan menunjukkan bahwa kadar air tanah maksimum 29,10%, kadar air tanah minimum 12,87% dan rata-rata kadar air tanah 23,55%. Rata-rata waktu pengoperasian pompa irigasi 13,07 menit dengan total aplikasi irigasi 21,40 m3. Total daya untuk mengoperasikan sistem irigasi sprinkler otomatis 67,0 Watt dan menghemat penggunaan daya baterai sebesar 234,7 Watt.

Design of automatic control system of spatial motion of a remotely operated underwater vehicle under uncertainty conditions

Design of automatic control system of spatial motion of a remotely operated underwater vehicle under uncertainty conditions

Improved Design and Implementation of Automatic Flight Control System (AFCS) for a Fixed Wing Small UAV

Improved Design and Implementation of Automatic Flight Control System (AFCS) for a Fixed Wing Small UAV

Design of PCB Automatic Optical Defect Detection and Control System Based on PLC

This paper introduces the automatic optical defect detection and control system of the array camera PCB with PLC as the core and gives the PID control of the PCB motion device, the area camera and the Kalman filter. According to the set process conditions of the industrial assembly line, the whole system is controlled to acquire the defect detection image of the PCB. Compared with the scanning of the line camera, the image acquisition time is reduced, and the detection efficiency is improved.

Design of Automatic Control System for the Using of Gas Wells Production

In this paper, by absorbing the advantages of imported control system and equipment and combining years of field experience and the characteristics of domestic gas well mining technology, a new type of automatic control system and equipment for gas well dewatering was put forward. What’s more, short message communication was used to transmit control instructions and data remotely, and functions including the extraction of gas well data by U disk, the replay of recent gas well data curve and the alarm of gas pressure sudden change were added.