Control System Trends in Turbo-Machinery

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The speeds at which modern turbo-machines such as aircraft engines and power generation turbines operate are so high and the time available to react to a possible emergency situation so small that human interface is mostly of little consequence. The automatic control system built inside modern turbo-machines senses, measures and conrols operating parameters while the engine is running. If one or more operating parameters goes beyond set limits because of a malfunction, the control system has the capability to detect the fault, establish a course of corrective action, issue instructions, and execute the commands that will rectify the situation. The entire sequence of detecting, evaluating, and taking remedial action occurs over a period that is timed in milliseconds.

This book provides detailed procedures for automatic control theory and its methods to improve efficiency by reducing fuel consumption, and in the process also reduce exhaust gas emissions. The book focuses on:

Fuel consumption, power output and exhaust gas emissions

State-of-the-art in sensor and actuator technologies

Achieving target objectives through creative controller design

Analyse complex problems ranging from compressor stall to controlling rotor vibrations

Real-time simulation to maximise operating efficiency

Growth in machine operating parameters and user expectations require exacting methods. Emphasis is placed on practical methods related to instrumentation, understanding concepts, interpreting results and obtaining solutions. Analysis as a problem-solving tool is the focus.

ABOUT THE AUTHOR A.S. Rangwala

A.S. Rangwala received a Master of Science degree in Mechanical Engineering from Drexel University, Philadelphia, and also obtained Master's degree in Industrial Engineering from University of Cincinnati. He has worked for 30 years in the field of Structural Dynamics on compressors and gas turbines as applicable to aircraft engines, and steam turbines and generators for power plant applications. Mr, Rangwala has written several papers and reports on all facets of machinery system and component dynamics. He has worked a General Electric Company's Aircraft Engines Group, in Cincinnati, OH and Lynn, Mass., and at large Steam Turbines Department, Schenectady, NY. He has also worked at General Motors Corporation, Indianapolis. He now works as an International consultant and teaches short courses for practicing engineers on structural vibrations of rotating and reciprocating machinery. He has also been an adjunct professor at Cincinnati State Technical College.