scholarly journals Telecontrolling System Design for Cigarette Rod Oven Room based on Android in Realtime (Case Study in Indokretek Factory)

2018 ◽  
Vol 7 (2) ◽  
pp. 8-13
Author(s):  
Ainnur Rahayu Pratiwi
Keyword(s):  
Control System ◽  
System Design ◽  
Packet Loss ◽  
Working Hours ◽  
Sensor Data ◽  
Test Results ◽  
Average Temperature ◽  
Network Quality ◽  
Working Hour

The control system in the cigarette oven room at the Indokretek Factory is currently still manual by means that every 2 hours the oven room will be checked to get the appropriate results. In addition, the Indokretek Factory has a limit on working hours from 07.00-16.00 WIB, so that when it passes the working hour, no one controls the cigarette oven room. The telecontrolling system that is designed can be used for sensor readings, processing sensor data and sending it to firebase until it can be received by the user through the telecontrolling system application in the cigarette oven room so that it can be used for realtime monitoring of the oven room at any time. The system designed to transmit information in the form of temperature and humidity values ??with sensor accuracy with an average temperature value of 0.583% and a humidity of 0.79975%. The network quality test results show that operator B has the lowest delay value and the highest throughput value of 38.62 ms and 9.237869 Kbps, while operator C has the lowest packet loss value of 0.619% so that it includes network quality with very good quality according to standards TIPHON.

scholarly journals Doctors’ Extended Shifts as Risk to Practitioner and Patient: South Africa as a Case Study

2020 ◽  
Vol 17 (16) ◽  
pp. 5853
Author(s):  
Koot Kotze ◽  
Helene-Mari van der Westhuizen ◽  
Eldi van Loggerenberg ◽  
Farah Jawitz ◽  
Rodney Ehrlich
Keyword(s):  
South Africa ◽  
South African ◽  
Medical Practice ◽  
Health And Safety ◽  
Working Hours ◽  
Middle Income ◽  
The Impact ◽  
Safe Working ◽  
Working Hour

Extended shifts are common in medical practice. This is when doctors are required to work continuously for more than 16 h, with little or no rest, often without a maximum limit. These shifts have been a part of medical practice for more than a century. Research on the impact of fatigue presents compelling evidence that extended shifts increase the risk of harm to patients and practitioners. However, where the number of doctors is limited and their workloads are not easily reduced, there are numerous barriers to reform. Some of these include a perceived lack of safer alternatives, concerns about continuity of care, trainee education, and doctors’ preferences. As such, working hour reorganisation has been contentious globally. South Africa, a middle-income country where extended shifts are unregulated for most doctors, offers a useful case study of reform efforts. The South African Safe Working Hours campaign has promoted working hour reorganization through multi-level advocacy efforts, although extended shifts remain common. We propose that extended shifts should be regarded as an occupational hazard under health and safety legislation. We suggest options for managing the risks of extended shifts by adapting the hierarchy of controls for occupational hazards. Despite the challenges reform pose, the practice of unregulated extended shifts should not continue.

scholarly journals CRONE control system design toolbox for the control engineering community: tutorial and case study

2013 ◽  
Vol 371 (1990) ◽  
pp. 20120149 ◽  
Author(s):  
Patrick Lanusse ◽  
Rachid Malti ◽  
Pierre Melchior
Keyword(s):  
Control System ◽  
System Design ◽  
Fractional Order ◽  
High Performance ◽  
Degrees Of Freedom ◽  
Control System Design ◽  
Robust Controllers ◽  
Control Engineering ◽  
Crone Control

Fractional-order differentiation offers new degrees of freedom that simplify the design of high-performance dynamic controllers. The CRONE control system design (CSD) methodology proposes the design of robust controllers by using fractional-order operators. A software toolbox has been developed based on this methodology and is freely available for the international scientific and industrial communities. This paper presents both the CRONE CSD methodology and its implementation using the toolbox. The design of two robust controllers for irrigation canals shows how to use the toolbox.

Model Based Performance Correction Methodology — A Case Study

2014 ◽  
Author(s):  
Koldo Zuniga ◽  
Thomas P. Schmitt ◽  
Herve Clement ◽  
Joao Balaco
Keyword(s):  
Control System ◽  
Control Systems ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Performance Test ◽  
Test Results ◽  
Model Based ◽  
Test Conditions ◽  
Partial Load

Correction curves are of great importance in the performance evaluation of heavy duty gas turbines (HDGT). They provide the means by which to translate performance test results from test conditions to the rated conditions. The correction factors are usually calculated using the original equipment manufacturer (OEM) gas turbine thermal model (a.k.a. cycle deck), varying one parameter at a time throughout a given range of interest. For some parameters bi-variate effects are considered when the associated secondary performance effect of another variable is significant. Although this traditional approach has been widely accepted by the industry, has offered a simple and transparent means of correcting test results, and has provided a reasonably accurate correction methodology for gas turbines with conventional control systems, it neglects the associated interdependence of each correction parameter from the remaining parameters. Also, its inherently static nature is not well suited for today’s modern gas turbine control systems employing integral gas turbine aero-thermal models in the control system that continuously adapt the turbine’s operating parameters to the “as running” aero-thermal component performance characteristics. Accordingly, the most accurate means by which to correct the measured performance from test conditions to the guarantee conditions is by use of Model-Based Performance Corrections, in agreement with the current PTC-22 and ISO 2314, although not commonly used or accepted within the industry. The implementation of Model-based Corrections is presented for the Case Study of a GE 9FA gas turbine upgrade project, with an advanced model-based control system that accommodated a multitude of operating boundaries. Unique plant operating restrictions, coupled with its focus on partial load heat rate, presented a perfect scenario to employ Model-Based Performance Corrections.

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