Multiloop control system study of a gas turbine compressor and power unit: II - Experimental investigation

Author(s):  
J. R. Shull ◽  
G. A. Russell
2012 ◽  
Vol 503-504 ◽  
pp. 1633-1638 ◽  
Author(s):  
Melih Cemal Kushan ◽  
Zhong Xiao Peng ◽  
Shu Zhi Peng

One of the key elements of servicing the aviation industry is the provision and maintenance of first class equipment. In order to ensure a secure and effective flight of aircrafts in aviation, the ground supporting equipment which enables the planes to get off the ground without delaying the flight plans, has to be kept ready at all times [1].


Author(s):  
R. B. Williams

The Alberta Gas Trunk Line’s new 20,000-hp gas turbine compressor set is one of the largest and most modern aircraft derivatives available to industry to date. This paper describes the various aspects of station and unit design for the compressor package. The additional operational flexibility gained as a result of adding this unit to our existing 12,500-hp station is described. The paper will also present a description of the station’s control system, including unit controls, surge controls, and other features of the instrumentation. Trunk Line is concerned with keeping the availability of the unit high, and as such, the paper will describe some features which help keep downtime to a minimum.


2005 ◽  
Vol 5 (1) ◽  
pp. 1 ◽  
Author(s):  
Renanto Handogo ◽  
Avon T. H. ◽  
Joko Lelono

The applicability of the steady-state Relative Gain Array (RGA) to measure dynamic process interactions in a multiloop control system was investigated. Several transfer function matrices were chosen, and the gains, time constants, and dead times of their elements were varied to represent the systems with dominant dynamic interactions. It was shown that the steady-state RGA method predicted the controller pairing accurately if the pairing elements recommended by RGA had the bigger gains and the same or smaller time constants compared to other elements in the corresponding rows. When these conditions were not met, the RGA would give a wrong result, and dynamic interaction measurements, such as the Average Dynamic Gain Array (ADGA) and the Inverse Nyquist Array (lNA), should be used instead to determine the best controller pairing in a multiloop control system. Keywords: Control pairing, dynamic process interaction, multiloop control systems, Relative Gain Array (RGA), and steady state.


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