Requirements for and Operation of a Jet Engine Driven Electrical Generating Plant (70 MW) Sequenced and Controlled for System Peaking and Frequency Change in Venezuela

The main factor to achieve business success in the era of globalization is quality. Quality control is key in maintaining customer loyalty. In the company's production process is still found the resulting product does not comply with the specified specifications. This study aims to determine the value of sigma and factors causing damage to the production process of bagging section For companies with quality control is expected to achieve corporate goals. In this study, the methods used is Six Sigma with define, measure, analyze, improve. Six Sigma result is measurement of company performance baseline at measurement stage that is company at condition 5,1 sigma with DPMO equal to 162,4532. The factors causing the disability of sugar packing are lack of research and skill of the operator, instability of conveyor speeds and jet engine position, machine hygiene condition, lack of weighing machine, and ineffective treatment, and control method.

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Characterization and control of a multielement dual-frequency liquid-crystal device for high-speed adaptive optical wave-front correction

Applied Optics ◽

10.1364/ao.40.002345 ◽

2001 ◽

Vol 40 (15) ◽

pp. 2345 ◽

Cited By ~ 26

Author(s):

David Dayton ◽

Stephen Browne ◽

John Gonglewski ◽

Sergio Restaino

Keyword(s):

Liquid Crystal ◽

Wave Front ◽

High Speed ◽

Dual Frequency ◽

Optical Wave ◽

Liquid Crystal Device ◽

And Control

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Miniature Fiber-Optic Magnetic Field Sensor Based on Ampere Force and Fiber Laser

Photonic Sensors ◽

10.1007/s13320-020-0590-5 ◽

2020 ◽

Vol 10 (4) ◽

pp. 291-297

Author(s):

Weiren Cheng ◽

Tianming Luo ◽

Linghao Cheng ◽

Hao Liang ◽

Bai-ou Guan

Keyword(s):

Magnetic Field ◽

Fiber Laser ◽

Fiber Optic ◽

Copper Wire ◽

Beat Signal ◽

Magnetic Field Sensor ◽

Frequency Change ◽

Dual Frequency ◽

Ampere Force ◽

Field Sensor

Abstract A compact fiber-optic magnetic field sensor is proposed by packaging an orthogonal dual-frequency fiber grating laser and a copper wire with alternating electrical current together inside epoxy resin. The alternating current generates Ampere force in a magnetic field, which changes the birefringence of the fiber laser and hence tunes the frequency of the beat signal after photodetection. The magnetic field magnitude can then be detected by measuring the frequency change of the beat signal. The sensitivity of the sensor can be tuned with a maximum response of 35.21 kHz/kGs demonstrated. Moreover, the sensor shows good immunity to environment interference.

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Upgrade of the Firing and Control System at Egyptalum for Dual Fuel Firing

Light Metals 2016 ◽

10.1007/978-3-319-48251-4_163 ◽

2016 ◽

pp. 971-976

Author(s):

D. Maiwald ◽

D. Di Lisa ◽

Mario Mnikoleiski ◽

Amir Tharwat Henry

Keyword(s):

Control System ◽

Dual Fuel ◽

And Control

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Transferring jet engine diagnostic and control technology to liquid propellant rocket engines

10.2514/6.1989-2851 ◽

1989 ◽

Author(s):

JOSEPH ALCOCK ◽

STEVEN HAGAR

Keyword(s):

Rocket Engines ◽

Control Technology ◽

Liquid Propellant ◽

Jet Engine ◽

And Control ◽

Propellant Rocket

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Real-Time Burst Signal Removal Using Multicolor Pyrometry Based Filter for Improved Jet Engine Control

Journal of Turbomachinery ◽

10.1115/1.4029615 ◽

2015 ◽

Vol 137 (8) ◽

Cited By ~ 3

Author(s):

Guanghua Wang ◽

Jordi Estevadeordal ◽

Nirm Nirmalan ◽

Sean P. Harper

Keyword(s):

Real Time ◽

Operating Conditions ◽

Engine Control ◽

Jet Engines ◽

Jet Engine ◽

Root Cause ◽

Control Functions ◽

Wide Range ◽

Voltage Signal ◽

And Control

Online line-of-sight (LOS) pyrometer is used on certain jet engines for diagnosis and control functions such as hot-blade detection, high-temperature limiting, and condition-based monitoring. Hot particulate bursts generated from jet engine combustor at certain running conditions lead to intermittent high-voltage signal outputs from the LOS pyrometer which is ultimately used by the onboard digital engine controller (DEC). To study the nature of hot particulates and enable LOS pyrometer functioning under burst conditions, a multicolor pyrometry (MCP) system was developed under DARPA funded program and tested on an aircraft jet engine. Soot particles generated as byproduct of combustion under certain conditions was identified as the root cause for the signal burst in a previous study. The apparent emissivity was then used to remove burst signals. In current study, the physics based filter with MCP algorithm using apparent emissivity was further extended to real-time engine control by removing burst signals at real time (1 MHz) and at engine DEC data rate. Simulink models are used to simulate the performances of the filter designs under engine normal and burst conditions. The results are compared with current LOS pyrometer results and show great advantage. The proposed model enables new LOS pyrometer design for improved engine control over wide range of operating conditions.

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Effect of CO2 content in CNG on the combustion process in a dual-fuel compression ignition engine

Combustion Engines ◽

10.19206/ce-116869 ◽

2015 ◽

Vol 162 (3) ◽

pp. 91-101

Author(s):

Sławomir WIERZBICKI ◽

Maciej MIKULSKI ◽

Michał ŚMIEJA

Keyword(s):

Combustion Process ◽

Gaseous Fuel ◽

Dual Fuel ◽

Combustion Engines ◽

Compression Ignition ◽

Compression Ignition Engine ◽

Toxic Compounds ◽

Alternative Sources ◽

Effective Use ◽

And Control

Seeking alternative sources of energy for its more effective use, reducing emissions of toxic pollutants to the atmosphere and counteracting global warming are nowadays the major areas of development in the power industry, including the design of combustion engines. Currently, the research into the use of new fuels, which may be effective sources of energy, is performed by many scientific centres. The use of biogas for production of energy in cogeneration systems is one of the ways for improvement of energy balance. In the research described herein, a dual-fuel compression ignition engine was fuelled with gaseous fuel with variable CNG and CO2 ratios. The tests were performed for engine fuelling controlled by both an original controller with the software optimised for single-fuel operation and for the injection of a pilot dose of diesel controlled by a dedicated controller enabling the adjustment and control of the injection and dose parameters. This paper presents the effect of carbon dioxide content in gaseous fuel on the combustion process and emission of toxic compounds in the engine examined.

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A Novel Mini Jet Engine Powered Unmanned Aerial Vehicle: Modeling and Control

Unmanned Systems ◽

10.1142/s2301385022500017 ◽

2021 ◽

pp. 1-13

Author(s):

Erdinç Altuğ ◽

Abdullah Türkmen

Keyword(s):

Jet Engines ◽

Flight Duration ◽

Thrust Vectoring ◽

Jet Engine ◽

Modeling And Control ◽

Engine Thrust ◽

Heavy Lift ◽

Aerial Vehicle ◽

Thrust System ◽

And Control

Significant progress has been made in recent years on personal air vehicles (PAVs), which offer independent and autonomous urban transportation. On-demand parcel delivery drones and heavy-lift drones are gaining serious attention. Although various designs for these systems have been put forward, they still have not reached sufficient maturity. The current systems provide somehow satisfactory operation, but many of these systems are limited in payload capacity and flight duration, and not suitable for future operations. In this paper, we propose a novel thrust system that uses multiple mini jet engines. Unlike electric motors, the jet engine thrust cannot vary rapidly. This led us to design and develop a thrust vectoring system for each jet engine. This proposed system has the potential to enable drones to carry more payload and achieve longer flight times. This paper discusses the design and modeling of the system as well as the stabilization algorithms that satisfactorily stabilize the proposed system. We presented that due to motor lag, thrust variations cannot stabilize the vehicle. We showed that the use of a thrust vectoring mechanism with LQR-based controller can overcome the effects of motor lag and stabilize the vehicle, successfully.

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