scholarly journals Analysis of the influence of positive feedback on the quality of the control system

2017 ◽  
Vol 132 ◽  
pp. 02011 ◽  
Author(s):  
Irina Tsybriy ◽  
Vitaliy Ignatenko
2018 ◽  
Vol 26 (2) ◽  
pp. 131-143
Author(s):  
Marlinawati Marlinawati ◽  
Dewi Kusuma Wardani

The purpose of this research is to know the influence between the Quality of Human Resources, Utilization of Information Technology and Internal Control System Against Timeliness of Village Government Financial Reporting at Gunungkidul Regency. This research is causative research. The population is the village government in Gunungkidul Regency, especially in Gedangsari subdistrict. Criteria of respondents in the study were to village and village apparatus. We use questionnaire to collect data. We use multiple regression with SPSS program version 16.0 to analyze data. We find that quality of human resources and internal control system have a positive influence on the timeliness of village government financial reporting. On the other hand, utilization of information technology does not influence the timeliness of village government financial reporting. These imply that the quality of human resources and internal control system can speed up the preparation of village government financial reporting.


Author(s):  
Fahmi Yunistyawan ◽  
Yunistyawan J Berchmans ◽  
Gembong Baskoro

This study implements the auto start control system on an electric motor 3 phase C4Feeding pump when the discharge pressure is low-low (4.3 kg /cm²). The C4 feeding pumpmotor was initially manually operated from the local control station, this was very ineffectiveand inefficient because it still relied on the field operator to operate the pump motor and whenthe plant was in normal operating it is very risk if the field operator late to operate motor then itwill impact to quality of the product, and if the delay time to operate motor is too long then planthave to shut down, therefore improvement is needed in the C4 feeding pump motor controlsystem. In this paper, various types of 3-phase motor control are explained which allow it to beapplied to the C4 feeding pump motor that are on-off, inverter, and variable speed drive andefficient selection of the three systems control of the motor. Software and hardware used in thisthesis work are DCS CENTUM VP Yokogawa.


Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1257
Author(s):  
Alexey Dorokhov ◽  
Alexander Aksenov ◽  
Alexey Sibirev ◽  
Nikolay Sazonov ◽  
Maxim Mosyakov ◽  
...  

The roller and sieve machines most commonly used in Russia for the post-harvest processing of root and tuber crops and onions have a number of disadvantages, the main one being a decrease in the quality of sorting due to the contamination of working bodies, which increases the quantity of losses during sorting and storage. To obtain high-quality competitive production, it is necessary to combine a number of technological operations during the sorting process, such as dividing the material into classes and fractions by quality and size, as well as identifying and removing damaged products. In order to improve the quality of sorting of root tubers and onions by size, it is necessary to ensure the development of an automatic control system for operating and technological parameters, the use of which will eliminate manual sorting on bulkhead tables in post-harvest processing. To fulfill these conditions, the developed automatic control system must have the ability to identify the material on the sorting surface, taking into account external damage and ensuring the automatic removal of impurities. In this study, the highest sorting accuracy of tubers (of more than 91%) was achieved with a forward speed of 1.2 m/s for the conveyor of the sorting table, with damage to 2.2% of the tubers, which meets the agrotechnical requirements for post-harvest processing. This feature distinguishes the developed device from similar ones.


2012 ◽  
Vol 190-191 ◽  
pp. 819-824 ◽  
Author(s):  
Ying Jian Deng ◽  
Zhong Wei Liu

The giant hydraulic die press is our country national defense and the infrastructure essential equipment, the synchronous control system is the essential device to the giant forging hydraulic press, its synchronization control performance quality is good or bad will directly determine the quality of the product. This article through the proof of the theorem, gives the specific steps to achieve H∞ robust control algorithm. The simulation results show that: this control strategy has good inhibition to the change of system parameters, robustness is very strong, can well eliminate the system synchronization error.


2014 ◽  
Vol 608-609 ◽  
pp. 19-22
Author(s):  
Ping Xu ◽  
Jian Gang Yi

Hydraulic descaling system is the key device to ensure the surface quality of billet. However, traditional control methods lead to the stability problem in hydraulic descaling system. To solve the problem, the construction of the hydraulic descaling computer control system is studied, the working principle of the system is analyzed, and the high pressure water bench of hydraulic descaling is designed. Based on it, the corresponding computer control software is developed. The application shows that the designed system is stable in practice, which is helpful for enterprise production.


Author(s):  
Aris Eddy Sarwono ◽  
Asih Handayani

The problem with the low quality of financial reports in local governments is the reason this research was conducted. This research was conducted with the aim of analyzing the use of information technology on the quality of financial reports by considering the internal control system (SPI) factor. The location of this research is in the Karisidenan Surakarta area which includes 6 districts and 1 city. The population of this research is all state civil servants (ASN) in local governments who work in accounting. The sampling technique was using purposive sampling method. The results showed that the use of information technology had a positive effect on the quality of financial reporting in local governments, while the internal control system moderated the effect of the use of information technology on the quality of financial reporting in local governments.


2017 ◽  
Vol 4 (02) ◽  
pp. 274-293
Author(s):  
Nur Hidayati ◽  
J.M.V. Mulyadi

ABSTRACT The purpose of this study is to examine whether variables such as quality of goods/services procurement committee, income of goods/services procurement committee, procurement system and procurement system, procurement ethic of goods/services and internal control system have influence to fraud of goods/ services procurement in the ministry of health affairs agency. Population in this research is all auditor related in process of procurement of goods/services, while the object of research (sample) that is as much as 56 people. The technique of determining the sample using purposive sampling method. Data were tested using validity test, reliability test, multicolinearity test, heteroskedasticity test, multiple regression analysis, hypothesis test and coefficient of determination. The result of the research shows that the quality of procurement committee variables significantly and negatively affect the fraud of procurement of goods/services. The income of the procurement committee does not significantly affect the procurement of goods/services, procurement system and procedures have significant effect and negative to the goods/service procurement, ethics have significant effect and negative to the procurement of goods/services and internal control system significantly and negative to the fraud of procurement of goods/services. ABSTRAK Tujuan dari penelitian ini adalah untuk menguji apakah variabel seperti kualitas panitia pengadaan barang/jasa, penghasilan panitia pengadaan barang/jasa, sistem dan prosedur pengadaan barang/jasa, etika pengadaan barang/jasa, dan sistem pengendalian internal memiliki pengaruh terhadap fraud pengadaan barang/jasa di Lingkungan Instansi Kementerian Kesehatan RI. Populasi dalam penelitian ini adalah seluruh auditor yang terkait dalam proses pengadaan barang/jasa, sedangkan yang dijadikan objek penelitian (sampel) yaitu sebanyak 56 orang. Teknik penentuan sampel menggunakan metode purposive sampling. Data diuji menggunakan uji validitas, uji reliabilitas, uji multikolinearitas, uji heteroskedastisitas, analisis regresi berganda, uji hipotesis dan koefisien determinasi. Hasil penelitian menunjukkan bahwa variabel kualitas panitia pengadaan berpengaruh secara signifikan dan negatif terhadap fraud pengadaan barang/jasa. Penghasilan panitia pengadaan tidak berpengaruh secara signifikan terhadap terhadap fraud pengadaan barang/jasa, sistem dan prosedur pengadaan berpengaruh secara signifikan dan negatif terhadap fraud pengadaan barang/jasa, ketika berpengaruh secara signifikan dan negatif terhadap fraud pengadaan barang/jasa dan sistem pengendalian internal berpengaruh secara signifikan dan negatif terhadap fraud pengadaan barang/jasa. JEL Classification: M41, M42, H57


2021 ◽  
Vol 2 (2) ◽  
pp. 29-35
Author(s):  
Dmitry A. Sorokin ◽  
◽  
Sergey I. Volskiy ◽  
Jaroslav Dragoun ◽  
◽  
...  

The paper suggests a control system of a three-phase power factor corrector. The study of the control system operation is carried out and the expressions for calculating the permissible values of error amplifier factors are obtained. The influence of the error amplifier parameters on phase current quality is investigated. The dependence of total harmonic distortion input current on a combination of error amplifier parameters is obtained at a given value of power factor. The conditions under which the total harmonic distortion input current has the minimum value are found out. This article is of interest to power electronics engineers, who are aimed at developing a three-phase power factor corrector.


2011 ◽  
Vol 418-420 ◽  
pp. 1865-1868
Author(s):  
Ming Jin Yang ◽  
Xi Wen Li ◽  
Zhi Gang Wang ◽  
Tie Lin Shi

The performance of speed regulating is very important to the mixing process with safe, efficient operation and high quality of production. Strategies and practices of responses and optimization of a PID-based speed regulating system of a planetary mixer were presented in this paper. Research results show that: by means of the signal constraint function presented by Simulink Response Optimization, optimization PID parameters of the 2-DOF-PID controller can be obtained, and the response of close-loop control system has quite good performance of overshoot, response time, and stability compared with an open-loop control system.


2017 ◽  
Vol 12 (2) ◽  
Author(s):  
Novtania Mokoginta ◽  
Linda Lambey ◽  
Winston Pontoh

Application of Internal Control System and Regional Financial Accounting System in management of local government financial statements is a very important thing. This financial statements of local governments must meet the following characteristics : relevant, reliable, comparable, and understandable.  The purpose this study to examine the influence of the Internal Control System,Regional Financial Accounting System on the quality of goverment financial statements. The population in this study are all working in BPKAD Bolaang Mongondow Utara.  The sample in this study is the staff / employees of the financial part of the respondents were 30 respondents. The samples were selected by using a purposive samplingmethod. Data was collected by distributing questionnaires to the respondents directly concerned. Technical analysis of the data used is multiple regression with SPSS 22. The result showed that : the Internal Control System has a significant effect on the quality of government financial statements and the Regional Financial Accounting System has a positive significant effect on the quality of goverment financial statements.Keywords : Internal Control system, Regional finsncisl accaounting system, quality of goverment financial statements.


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