• Title/Summary/Keyword: Supervisory system

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The Effect of Police Officers' Participatory Decision-making, Supervisory Quality and Attitude and Organizational Justice on Job Satisfaction: Focused on Mediating Effect of Work-Life Conflict

  • Jang, Cheolyeung
    • International Journal of Advanced Culture Technology
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    • v.8 no.2
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    • pp.68-75
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    • 2020
  • The purpose of this study was to investigate the effect of police officers' participatory decision-making, supervisory quality and attitude, organizational justice on job satisfaction focused on mediating effect of work-life conflict. As a result of analysis of 185 police officers, the results were as follows. The causal relationships between participatory decision-making, organizational justice and work-life conflict, the ones between supervisory qualities and attitude, organizational justice, work-life conflict and job satisfaction, all of them reached the significance levels, not the causal relationship between supervisory qualityand attitude work-life conflict. Thus, the results for the interaction have shown, participatory decision-making and organizational justice and work-life conflict have negative influences on work-life conflict respectively, and supervisory qualities and attitude conflict, organizational justice conflict, work-life conflict have effect on job satisfaction with positive and negative effect. The Sobel-test showed that the Sobel-test statistic of the mediating effect of work-life conflict on causal relationships between organizational justice and job satisfaction is significant, but not in the mediating effect of work-life conflict on causal relationships between supervisory qualities and attitude and job satisfaction. According to the analytical results, work-life conflict is an important factor that can improve police officers' job satisfaction in the public organizational context with an open-oriented- system and culture for employees' participation in the process of decision making and equality and fairness for organizational management. It is also noted that work-life harmony for employees may be incompatible with the supervisor's perception of the work-oriented or prioritized-way in hierarchical organizations like police agencies.

Establish the remote portrait supervisory system of distribution line using OPNW (OPNW를 이용한 배전선로 원격화상 감시시스템 구축)

  • Oh, Myon-Taek;Lee, Seung-Bae
    • Proceedings of the KIEE Conference
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    • 2008.11a
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    • pp.103-106
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    • 2008
  • OPNW, which takes charge of the outer neutral wire role and the inner optical network role, was developed at the first time among nation and substituted the neutral wire of distribution line between electric power substation and neighboring station. This paper refers to results about its optical character measured periodically, and examines closely whether the unique matter will be occurred or not about the role of neutral wire during more than one year. Also, established OPNW became a new chance to distribution facility's working by establishing remote portrait supervisory system and doing remote supervisory about essential equipment of distribution line.

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Implementation and Control of Generic Internet-Based Telerobotic Systems

  • Sudath R. Munasinghe;Lee, Ju-Jang;Yuji Ishida;Naruto Egashira;Masatoshi Nakamura
    • International Journal of Control, Automation, and Systems
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    • v.2 no.2
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    • pp.220-227
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    • 2004
  • This paper describes the design and implementation techniques of a generic Internet-based telerobotic system. The purpose is to make available the precious technical information and hands-on experience of the authors for the research community. The paper is based on the telerobotics system that the authors recently implemented between KAIST, Korea and Saga University, Japan. In its current functionality, two control modes: high-level supervisory control and low-level supervisory control are explored demonstrating their merits and demerits.

PID-Supervision Hybrid Controller for Robust Control of DC Motor (DC 전동기의 강인 제어를 위한 PID-관리 복합형 제어기)

  • Jeon, Jeong-Chay;Oh, Hun;Park, Wal-Seo;Cho, Hyeon-Seob;Ryu, In-Ho
    • Proceedings of the KIEE Conference
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    • 1998.07a
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    • pp.244-246
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    • 1998
  • Robust control for DC motor is needed according to the highest precision of industrial automation. However when a motor control system with PID controller has an effect of load disturbance, it is very difficult to guarantee the robustness of control system. As a compensation method solving this problem, in this paper, PID-supervision hybrid control method for motor control system is presented. If the PID control system (without the supervisory controller) is stable in the sense that the error is inside the constraint set, the supervisory control is idle. If the error hits the boundary of the constraint, the supervisory controller begins operation to force the error back to the constraint set. We prove that the PID-supervision hybrid control system is globally stable in the sense that the error is guaranteed to be within the tolerance limits specified by the system designer.

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A Study on the Cognitive Process of Supervisory control in Human-Computer Interaction (인간-컴퓨터 작업에서 감시체계의 상황인지과정에 관한 연구)

  • 오영진;이근희
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.16 no.27
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    • pp.105-111
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    • 1993
  • Human works shift its roll from physical condition to the system supervisory control task In this paper safety-presentation configuration is discussed instead of well-known fault-warning configuration. Of paticular interest was the personal factor which include the cognitive process. Through a performance between each person information processing(d') and decision process($\beta$) was pointed out to explain the sensitivity of personal cognitive process. Impact of uncertainty effect the supervisor having doubt situations. These facts are released by the use of flat fuzzy number of $\beta$ and its learning rate R.

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Optical Sensor Technology for Supervisory and Control of Electric Power System (전력 시스템 감시 제어용 광센서 기술)

  • Kim, Young-Soo
    • Proceedings of the KIEE Conference
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    • 2000.07c
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    • pp.2189-2191
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    • 2000
  • Electric power systems are becoming advanced by using new technology year by year However, in electric power system environments. electromagnetic interference occurs in measurement, supervisory and control systems, especially in sensors. Optical sensor technologies are useful for solving the problem, since they are not affected by electromagnetic interference because they are composed of insulting materials. In this paper, some applications of optical sensor technology to electric power systems are introduced.

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Supervisory Monitoring of Railway Signalling Devices by Spying Technique (스파잉 기법에 의한 철도신호제어설비 집중감시기법)

  • Kim, Byung-Chun;Choi, Kyu-Hyoung
    • Proceedings of the KIEE Conference
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    • 2005.07b
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    • pp.1592-1594
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    • 2005
  • This paper presents a method to construct a supervisory monitoring system for railway signaling devices which can provide the real-time operation information of signalling devices to several maintenance depots. Spying technique has been applied to acquire the real-time data transmitted among railway signaling devices without interfering the railway signalling system function.

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Robust Speed Control of DC Motor Using PID-Supervision Hybrid Controller (PID-관리 복합형 제어기를 이용한 직류 전동기의 강인한 속도제어)

  • 전정채;조현섭;박왈서
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.12 no.4
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    • pp.70-74
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    • 1998
  • Robust control for DC motor is needed according to the highest precision of industrial automation. However, when a motor control system with PID contoller has an effect of load disturbance, it is very difficult to guarantee the robustness of control system. In this paper, PID-supervision hybrid control methods for motor control system (without the supervisory controller) is stable in the sense that the error is inside the constraint set, the supervisory control is idle. If the error hits the boundary of the constraint, the supervisory controller beings operation to force the error back to the constraint set. We prove that the PID-supervision hybrid control system is globally stable in the sense that the error is guaranteed to be within the tolerance limits specified by the system designer.

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Optimal Control for Central Cooling Systems (중앙냉방시스템의 최적제어에 관한 연구)

  • 안병천
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.12 no.4
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    • pp.354-362
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    • 2000
  • Optimal supervisory control strategy for the set points of controlled variables in the central cooling system has been studied by computer simulation. A quadratic linear regression equation for predicting the total cooling system power in terms of the controlled and uncontrolled variables was developed using simulated data collected under different values of controlled and uncontrolled variables. The optimal set temperatures such as supply air temperature, chilled water temperature, and condenser water temperature, are determined such that energy consumption is minimized as uncontrolled variables, load, ambient wet bulb temperature, and sensible heat ratio, are changed. The chilled water loop pump and cooling tower fan speeds are controlled by the PID controller such that the supply air and condenser water set temperatures reach the set points designated by the optimal supervisory controller. The influences of the controlled variables on the total system and component power consumption was determined. It is possible to minimize total energy consumption by selecting the optimal set temperatures through the trade-off among the component powers. The total system power is minimized at lower supply, higher chilled water, and lower condenser water set temperature conditions.

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Task Rescheduling Using a Coordinator in a Structural Decentralized Control of Supervisory Control Systems

  • Lee, Sang-Heon;Kim, Ill-Soo;Kai C. Wong
    • International Journal of Precision Engineering and Manufacturing
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    • v.5 no.2
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    • pp.22-31
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    • 2004
  • A problem of task rescheduling using a coordinator in a structural decentralized control of supervisory control theory is formulated. we consider that the overall system is divided into a number of local systems. Using an example of a chemical batch reaction process, it has shown that after local supervisors have been established for a given task, a coordinator can be used to solve some rescheduling problems among local plants for new or modified tasks. The coordination system models the interactions of local plants, and is consisting of only the shared events of local plants, so simpler to synthesize. A coordinator is designed based on the specifications given for the coordination system. Under the 'structural' conditions developed in this paper, the combined concurrent actions of the coordinator with the existing local supervisors will achieve the rescheduling requirements. Again since the conditions are structural (not specification-dependent), once the coordination architecture has been established, it can be used for a number of different tasks without further verifications.