Automated System for Maintaining the Temperature, Taking into Account the Predicted Changes in External Conditions

2021 ◽  
Vol 1 (42) ◽  
pp. 73-79
Author(s):  
Nikolay Filippenko ◽  
◽  
Aleksandr Livshits ◽  
Emil’ Farzaliyev ◽  
Vladimir Bychkovskiy
Keyword(s):  
Control System ◽  
Control Systems ◽  
Temperature Control ◽  
Temperature Regime ◽  
Weather Forecast ◽  
Automated System ◽  
Research Purpose ◽  
Experimental Sample ◽  
Practical Result ◽  
External Conditions

An analysis of the available automated indoor temperature control systems shows that all of them have a significant shortage. The systems do not provide for predictive temperature control in an automated form. Such changes are determined and made, depending on the qualification, by the operator based on personal experience and the reports received by him on the weather channels. Possible errors lead to loss of productivity or disruption of technological modes of production. (Research purpose) The research purpose is in developing a system of automated predictive control of the temperature regime of industrial premises to improve energy efficiency and the quality of maintaining the necessary climatic conditions. (Materials and methods) Increasing the efficiency of greenhouses can be achieved through the introduction of an automated and more economical temperature control system. The proposed device additionally includes a weather forecast receiving unit, made on the basis of microprocessor technology, for reliable signal reception. The air that circulates inside the greenhouse through heat exchange circuits was used as a heat carrier. (Results and discussion) An additional heat (cold) reserve is created in the greenhouse, which allows to maintain the set temperature in the room, taking into account the weather forecast. The results presented in patents No. 2710010, 2667684 and the implemented control system based on certificates of state registration of programs for electronic computers No. 2015618030, 20146115490, and 2014617605 exceed the results obtained by the authors of the proposed developments based on patents No. 2586923 and No. 80308. (Conclusions) The use of new technical solutions and technologies for providing the basis for the development of a new principle for the construction of automated control systems for the temperature regime of industrial premises, taking into account the predicted changes in external conditions. The practical result of the conducted research is: a concept, a control algorithm, a manufactured and tested experimental sample of a device for controlling the temperature regime in a greenhouse.

scholarly journals Air Temperature Control System in a Building on the Basis of Mathematical Modelling

2018 ◽  
Vol 155 ◽  
pp. 01041 ◽  
Author(s):  
Aleksandr Pilipenko ◽  
Sergei Petrov
Keyword(s):  
Computer Simulation ◽  
Control System ◽  
Mathematical Modelling ◽  
Mathematical Models ◽  
Air Temperature ◽  
Temperature Control ◽  
Automated System ◽  
Temperature Control System ◽  
Heating Systems ◽  
The Cost

In the article the authors solve a crucial objective of reducing the cost of heating services through the introduction of a system, controlling boilers and heating devices, based on modelling of the building and predicting heating systems functioning and operation. The authors describe the method of mathematical modelling of heating systems of the building and represent the developed mathematical models, pledged and installed into the developed automated system. The authors have offered an automated system of dispatch control of the boilers with the elements of computer simulation and modelling.

scholarly journals Design of components of adaptive control system of conveyor transport

2021 ◽  
pp. 26-33
Author(s):  
Tetiana Pluhina ◽  
Oleksandr Yefymenko ◽  
Vladimir Suponyev ◽  
Nina Nikolaichuk
Keyword(s):  
Adaptive Control ◽  
Control System ◽  
Control Systems ◽  
Intelligent Control ◽  
Adaptive Systems ◽  
Evaluation Method ◽  
Design System ◽  
Adaptive Control System ◽  
Adaptive Control Systems ◽  
External Conditions

The task design of components of adaptive control system of conveyor transport was carried out. The analysis of existing researches and publications, in which the main problem is highlighted, namely that uncertainty and external conditions during operation leads to the need to introduce new components, functions of the actuator conveyor and ensuring the adaptation based on intelligent control. As a result of the existing researches analysis and publications, the purpose of research is set, namely: increasing the efficiency of the conveyor line control system by designing the components of the adaptive control system that implement the algorithm of adaptation in conditions of uncertainty. The concept of а multicriteria choice, set of indicators for assessing the properties of a design system and its total effect have been substantiated. The results of the research are as follows: structured the functions of adaptive systems; the basic modes of development of adaptive control systems and their realization in industrial conditions are set, for that purpose, the mathematical support for exposing the vagueness of control worked out by ACIT KHNADU is used; the principles of development of adaptive control systems, technical support and requirements produced to the basic components of system (subsystems) are proposed. The practical value lies in the fact that the choice of components control systems makes it possible to improve the accuracy and the possibility of data correction. The originality lies in the use of multicriteria evaluation method and parameter optimization. Models are universal, will allow to select a set of technical means of CT control system according to the selected criteria and restrictions of each type of elements.

scholarly journals ENSURING OF CONTROL VERACITY OF BLOCK-MODULAR ELECTRONICS BASED ON A FUNCTIONALLY COMPLETE AUTOMATED SYSTEM

2018 ◽  
pp. 11-16
Author(s):  
G. I. Korshunov ◽  
V. A. Pritz ◽  
E. A. Frolova ◽  
A. E. Chupisov
Keyword(s):  
Quality Assurance ◽  
Control System ◽  
Control Systems ◽  
Automated System ◽  
Electronic Systems ◽  
Automated Control ◽  
Automated Control System ◽  
Algorithmic Software ◽  
Software And Hardware ◽  
Acceptance Tests

It is shown that quality assurance of block-modular electronic systems is achieved on the basis of reliability of control. It is necessary to provide control and diagnostics in full at all stages of the life cycle in the practice of developing and manufacturing programmable block-modular controllers. New results on the creation of the necessary means for automated control systems of serial-capable controllers are presented. Such systems can be used in preliminary and acceptance tests, as well as during adjustment in the production process. The algorithmic, software and hardware of the automated control system have been developed for functionally complete sets of modules (electronic panels). The development is performed for controllers in the tasks of the electric drive and can be used in other applications. The features of structural and circuit solutions and the layout of an automated control system are given.

Based on DSP Temperature Control System Design

2013 ◽  
Vol 321-324 ◽  
pp. 1337-1341
Author(s):  
Fu Rong Li ◽  
Jian Li Yu ◽  
Ya Zhou Di
Keyword(s):  
Control System ◽  
System Design ◽  
Control Systems ◽  
High Precision ◽  
Temperature Control ◽  
Temperature Control System ◽  
Control System Design ◽  
Output Stability ◽  
Precision Temperature ◽  
Precision Temperature Control

In this paper, it describes a DSP-based TMS320F28335 high-precision temperature control systems and explains its construction and principle. ADC which is integrated within DSP processes the collect temperature and double-controller algorithm controls the PWM output, the temperature can be set faster and more accurate. Simulation obtains two controller output stability, regulation faster, and getting a good robustness.

scholarly journals APPLICATION OF TEMPERATURE CONTROL SYSTEMS AT THE CATALYST ACTIVATION STEP IN THE METHANOL TESTPLANT

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Arya Bhaskara Adiprabowo ◽  
Astri Pertiwi ◽  
Nurdiah Rahmawati ◽  
Frendy Rian Saputro ◽  
Novio Valentino ◽  
...  
Keyword(s):  
Control System ◽  
Control Systems ◽  
Temperature Control ◽  
Active Sites ◽  
Reduction Process ◽  
Step Response ◽  
Temperature Control System ◽  
Synthesis Process ◽  
Catalyst Activation ◽  
Temperature Controller

Catalyst activation is an important step in methanol synthesis process, achieved by the reduction of CuO precursor producing Cu0 active sites.  Testplant’s temperature operation shall be maintainted at 220°C in order to maximize the CuO reduction process in the catalyst activation step. A temperature control system shall be applied in methanol testplant to maintain the temperature during reduction process, due to sensitivity of reduction process to temperature variation and possibility of disturbance such as change in gas flow rate which could affects the operating temperature. Temperature control systems are tested by using step response at the desired setpoint, which is 220°C at pre-heater and reactor and 60°C at sampling line. The tests are conducted by changing the setpoint value at temperature controller and previously stable flow gas in the system (disturbance rejection). The temperature control system proved to be able to response well during the test. In the end, methanol is produced from syngas, indicating catalyst activation success. Keywords: Catalyst Activation; Methanol Testplant; Temperature Controller

scholarly journals Fuzzy Logic as A Method of Decision Making in Automatic Watering Plants

2016 ◽  
Vol 2 (1) ◽  
pp. 15
Author(s):  
T. W. Matha ◽  
Agung Nugroho Jati ◽  
F. Azmi
Keyword(s):  
Decision Making ◽  
Fuzzy Logic ◽  
Control System ◽  
Automatic Control ◽  
Control Systems ◽  
Weather Forecast ◽  
Automatic Control Systems ◽  
Weather Information

In this era of technology, the use of automatic control systems can provide some benefits in terms of efficiency, accuracy, and safety compared to that of manual workmanship. This study tries to create a control system that can perform automatic plant watering system to help us in watering plants. In this study, weather forecast and weather shield are integrated with microcontroller as to gather weather information in the area around the plants. The information is then compared for decision making in automatic watering. This study is derived from the growing popularity of the hobby to grow plants in community. However, the constraint of time and distance in growing plants becomes one of the problems for people who are busy with their activities so that they do not have time for watering plants.

scholarly journals Organizational and economic mechanism of the automatic underground train operation system

2021 ◽  
Vol 8 (11) ◽  
pp. 37-43
Author(s):  
Palant et al. ◽  
Keyword(s):  
Control System ◽  
Control Systems ◽  
Public Transport ◽  
Electricity Consumption ◽  
Environmental Safety ◽  
Automated System ◽  
Automated Control ◽  
Economic Mechanism ◽  
Automated Control System ◽  
Automation Systems

This work deals with the provision of underground, as one of the main modes of public transport, with automated control systems, in particular the provision of automated train management. It defines that the underground is one of the most progressive modes of transport, which is related to its environmental safety, comfort, and speed of movement, as this mode of transport does not intersect with other transport and pedestrian routes, which excludes traffic blocks. Underground is an important element of urbanized spaces, for it serves large passenger traffic. The article presents an algorithm for the creation of an automated control system for the underground train system. Based on this algorithm, a model of building an organizational and economic mechanism for automation of control systems has been developed. The diagram of organizational and technical implementation of the automated system of underground train management is presented. An economic analysis of the effectiveness of the application of the automated control system of underground trains was carried out. The recoupment on the acquisition and installation of automation systems is very high. The application of the automated system will increase the capacity of the underground by optimizing the traffic schedules, which will contribute to increasing its profitability. It is also useful to determine the reduction of electricity consumption due to the change in the dynamics of acceleration and braking systems, which is important, as the underground is a powerful enterprise. In the future, a promising direction is to streamline the coordination of train schedules and other modes of land public transport.

scholarly journals Evaporative snout cooling system on the performance of lactating sows and their litters in a subtropical region

2015 ◽  
Vol 46 (2) ◽  
pp. 342-347 ◽  
Author(s):  
Jonas Perin ◽  
Thais Schwarz Gaggini ◽  
Samuel Manica ◽  
Diogo Magnabosco ◽  
Mari Lourdes Bernardi ◽  
...  
Keyword(s):  
Weight Loss ◽  
Control System ◽  
Control Systems ◽  
Temperature Control ◽  
Cooling System ◽  
Temperature Control System ◽  
Subtropical Region ◽  
Voluntary Feed Intake ◽  
Lactating Sows ◽  
And Performance

The aim of the study was to evaluate the influence of different temperature control systems on the voluntary feed intake (VFI), percentage of weight loss (PWL) and performance of lactating sows as well as on the weight of their piglets. Two systems were used: traditional temperature control system (TTCS) with curtain management and an evaporative snout cooling system (ESCS). The study was performed during the summer of 2011. After farrowing and at the weaning, 241 sows were weighed to evaluate the PWL during lactation. TTCS sows lost more weight (5.3±0.9%; P<0.05) than ESCS sows (2.2±0.9%). VFI was measured at intervals of four days in 32 primiparous and 39 multiparous sows. ESCS sows had higher VFI (5.8±0.2kg day-1; P<0.05) than TTCS sows (4.8±0.2kg day-1). Primiparous sows (4.4±0.2kg day-1) had a lower VFI than multiparous sows (6.3±0.2kg day-1, P<0.05) regardless of the temperature control system. Primiparous sows in the TTCS (10.9±1.3 days) had a longer weaning-to-oestrus interval than primiparous sows in the ESCS (7.0±1.2 days, P<0.05). Subsequent litter size tended to be higher (P=0.095) in ESCS than in TTCS (12.0±0.5 and 10.9±0.6 piglets born, respectively). Litters housed in ESCS were heavier (65.3±1.4kg; P<0.05) at weaning than litters in TTCS (60.7±1.4kg). The results suggest that in general sows and piglets housed in the ESCS have better performance than sows and piglets housed in TTCS.

Fuzzy Adaptive PID Controller Optimization Design in Temperature Control System

2014 ◽  
Vol 989-994 ◽  
pp. 3157-3160
Author(s):  
Xiao Peng Li ◽  
Lan Zhen Chen
Keyword(s):  
Control System ◽  
Transfer Function ◽  
Control Systems ◽  
Temperature Control ◽  
Pid Controller ◽  
Optimization Design ◽  
Temperature Control System ◽  
Fuzzy Pid ◽  
Significant Performance ◽  
Fuzzy Adaptive

A new self-adjusting PID controller based fuzzy inferences is proposed. Using fuzzy inferences method, the PID parameters can be adjusted adaptively online for the varying state of the system. This approach has more significant performance and robustness than conventional PID contorllers in any conditions. Traditional fuzzy control systems have difficulties for plants with great delay.A fuzzy PID system based on the Smith compensation theorem is proposed in the paper.It allows to change the transfer function of the plant.Simulation results are also given.

Passive Temperature Control System for An Aerospace Instrument

1966 ◽  
Vol 181 (1) ◽  
pp. 313-329 ◽  
Author(s):  
G. Walker ◽  
Ludwig Wolf
Keyword(s):  
Control System ◽  
Control Systems ◽  
Temperature Control ◽  
Lunar Surface ◽  
Thermal Environment ◽  
Temperature Control System ◽  
Power Weight ◽  
Passive System ◽  
Spectrally Selective ◽  
High Degree

In aerospace instruments, the problem of temperature control can become severe because convettive cooling cannot be used; heat must be transferred by radiative means alone. Systems are exposed to a rigorous thermal environment and there are strict limitations on the power, weight and volumes available. A surprisingly high degree of temperature control can be accomplished, however, by the use of a passive system of spectrally selective surfaces. In this paper, one approach to the design of passive temperature control systems is discussed by detailed reference to an instrument intended for use on the lunar surface.

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