FULL TEXT IN RUSSIAN
Mekhatronika, Avtomatizatsiya, Upravlenie, 2017, vol. 18, no. 11, pp.723—728
DOI: 10.17587/mau.18.723728
Resource Efficient ProportionalIntegrated Controller
M. K. Khubeev, atp@pstu.rus, Perm National Research Polytechnic University, Perm, 614000, Russian Federation

Corresponding author: Khubeev Mars K., D. Sc., Professor, Perm National Research Polytechnic University, Perm, 614000, Russian Federation
email: atp@pstu.ru
Accepted on August 07, 2017
Proportionalintegral (PI) controllers are used for continuous control of technological processes' parameters. Algorithms of Picontrollers have not undergone fundamental changes over the past decade. Manufacturers do not propose controllers that exceed the standard Picontroller on several key technical characteristics, which include expense of energy and resources, accuracy of control and stability margin. Therefore, this article offers resourceefficient Picontroller. Its use allows to achieve the following objectives: to save energy and resources, to improve automatic control accuracy and to increase the stability margin. A universal energyefficient PIcontroller is put as a basis of this design. Manufacturing tolerances are used to improve its technical characteristics. Situational approach is applied in solving the problem. Computational experiments were carried out for the seven known models of objects of control with the transport delay to assess the effectiveness. In the linear case the superiority of resourceefficient PIcontroller compared with energy efficient PIcontroller is characterized by the following results:
— the summary changing of the output of controller (modulo) decreases on average 1,75 times. This helps to save energy and resources of actuator;
— the error of maximum control is reduced by an average of 1,2 times, thereby increasing the quality of products;
— an average operation time of the actuator is decreased by an average of 1,3 times. This ensures resources savings of the actuator.
The following fact indicates the increase of stability margin: if the coefficients of transmission of control objects increased to values when the automatic control system with PIcontroller is at the limit of stability, then continuous oscillations are observed in the automatic control system with PIcontroller. Herewith an acceptable quality of control is realized in the automatic control system with a resourceefficient PIcontroller, since the maximum control error is less in 5 times. The benefits of resourceefficient PIcontroller are preserved in a variety of operating conditions — in the presence of nonlinear elements and the various controller setting. The presented results confirm the high efficiency of resourceefficient PIcontroller compared with both PIcontroller and energyefficient PIcontroller. Comprehensive solution of improvement problem of the basic technical characteristics of the PIcontroller determines the practical value of the work. Companies of chemical and related industries are interested in the use of controllers to enhance the effectiveness of automatic control systems.
Keywords: controller, tolerance, algorithm, object, resourceefficient, accuracy, stability, transfer function, transport delay, actuator 
For citation:
Khubeev M. K. Resource Efficient ProportionalIntegrated Controller, Mekhatronika, Avtomatizatsiya, Upravlenie, 2017, vol. 18, no. 11, pp. 723—728.
DOI: 10.17587/mau.18.723728
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