Modeling, analysis and control system development for the Italian hydrogen house

2009 ◽  
Vol 34 (4) ◽  
pp. 1638-1646 ◽  
Author(s):  
E.M. Stewart ◽  
A.E. Lutz ◽  
S. Schoenung ◽  
M. Chiesa ◽  
J.O. Keller ◽  
...  
Keyword(s):  
Control System ◽  
System Development ◽  
Modeling Analysis ◽  
And Control

Coherence Analysis and Control of Multi-Exciter Vibration Test System

2013 ◽  
Vol 401-403 ◽  
pp. 1005-1009
Author(s):  
Zheng Tao Yan ◽  
Shao Chun Ding
Keyword(s):  
Control System ◽  
System Development ◽  
Response Spectrum ◽  
Test System ◽  
Partial Coherence ◽  
Vibration Test ◽  
Test Field ◽  
And Control ◽  
Drive Signals ◽  
Test Control

Multi-exciter vibration test control system is the core of the multiple shaker vibration test, and multi-exciter vibration test control technology has become the hot point of vibration test field. Based on coherence principles, the coherence of two exciters control system was tested, the introduction of noise signal reduces the control coherence between the response spectrum and partial coherence between response and the corresponding drive signal. By means of increasing the coherence between drive signals, the control coherence between the response spectrum can be raised and control performance of system can be Improved. The above means could provide technical support for multi-exciter vibration test system development.

Software System Development of Measurement and Control System for a Nonlinear Absorber by Virtual Instrument

2011 ◽  
Vol 188 ◽  
pp. 236-240
Author(s):  
Cong Ling Zhu ◽  
Wei Zhu Jin ◽  
D.R. Ci ◽  
Zhi Gang Ding ◽  
S.T. Wu
Keyword(s):  
Control System ◽  
Virtual Instrument ◽  
System Development ◽  
System Structure ◽  
Software System ◽  
Measurement And Control System ◽  
Nonlinear Absorber ◽  
New Development ◽  
And Control ◽  
Measurement And Control

Measurement and control system is the key equipment for testing and analyzing of the dynamic characteristics for a nonlinear absorber.It is the necessary means of accomplishing to design the rationalization of the nonlinear absorber. This article has conducted the detailed research in the new development of absorber test equipment to the desing of system structure, The constituent of software system, and The process design, and The development of the computer program based on virtual techniques. Debugging and running this software system have shown that the precision and reliability of it have been proved.

Waukesha 275GL Series NOx Control System Development and Performance Testing

2010 ◽  
Author(s):  
Jared J. Wentz
Keyword(s):  
Control System ◽  
System Development ◽  
Fuel Efficiency ◽  
Performance Testing ◽  
Peak Performance ◽  
Engine Control System ◽  
Engine Wear ◽  
Nox Control ◽  
And Performance ◽  
And Control

Dresser Waukesha’s 275GL engine series, released in 2009, included an Engine System Manager (ESM) to manage and control critical engine operations. These engines are typically used in mechanical drive applications for natural gas compression as well as power generation at 2500 to 3300 kWb (3400–4500 bhp). The 275GL is now being offered in a low NOx configuration designated the 275GL+, that features a NOx based Air/Fuel Ratio (AFR) control. Market analysis determined that an engine with lower NOx output emissions while maintaining peak performance is of high importance. Utilizing a traditional oxygen based AFR system has limitations when controlling emissions at extreme low NOx values. In order to meet these needs and maintain a consistent low NOx level, development of a control system that allows an engine to achieve these requirements was essential. A NOx sensor based control system was developed to control extremely low NOx values while accounting for engine wear, humidity and fuel changes. An oxygen based AFR system has limitations that make it difficult, if not impossible, to use this approach for extremely low NOx levels. Some of these limitations can be attributed to sensor signal masking due to exhaust gases and having to correlate O2 to NOx for the specific application. This new NOx sensing functionality enables robust control of specific NOx emissions at varying engine and environmental conditions, yielding a powerful addition to the ESM engine control system applied on the 275GL engine. The NOx control running with ESM allows for the engine to achieve 0.5 g/bhp-hr NOx levels while maintaining fuel efficiency, fuel tolerance, and turndown range. This paper discusses the key testing, results and performance of this development when implemented on the 275GL+ engine.

Application and Key Technique Research of Monitoring and Control System for Drawing and Coving Workshop

2009 ◽  
Vol 16-19 ◽  
pp. 1268-1272
Author(s):  
Jing Feng Shao ◽  
Qian Li ◽  
Jia Li ◽  
Lan Shuang Qin
Keyword(s):  
Control System ◽  
Production Management ◽  
Production Control ◽  
System Development ◽  
Low Cost ◽  
Production Data ◽  
Monitoring And Control ◽  
Monitoring And Control System ◽  
Existing Problems ◽  
And Control

Aiming at the presently slow informationization development phenomenon in the drawing and coving workshop of textile enterprise, we analyze actual existing problems in production management and information development, use some theories and techniques to propose many solutions. According to the actual requirements of workshop, we implement a real-time monitoring and control system based on LAN. System’s structure and workflow, the key techniques within the system development are researched, the accuracy of production data is ensured by using numerical approximation theories. As proved by practice, the system's structure is simple, easy maintenance and low cost, meantime, furthermore, system can run stably, collect accurately production data, and its functions meet production control and information management of workshop needs.

Control System Development of Paper and Yarn Compounding Bag-Making Machine

2011 ◽  
Vol 58-60 ◽  
pp. 36-41 ◽  
Author(s):  
Zhen Rui Peng ◽  
Hong Yin
Keyword(s):  
Control System ◽  
System Development ◽  
Frequency Converter ◽  
Configuration Software ◽  
Rotary Encoder ◽  
Color Sensor ◽  
Control Scheme ◽  
Design Requirements ◽  
Configuration Software Wincc ◽  
And Control

This paper analyzes the bag-making process and control requirements of paper and yarn compounding bag-making machine (PYCBMM). The overall control scheme is established. Configuration software WinCC Flexible 2008, Siemens touch panel MP377, Siemens PLC S7-200, Siemens frequency converter MM440, rotary encoder, color sensor, and other elements are synthetically applied to design the PYCBMM control system. During 12 months commissioning operation, the control system is stable, reliable, and easy to operate. All the technical indices outperform the design requirements.

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