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A novel distributed intelligent system has been designed to control aerodynamic instabilities caused by stall and surge in variable geometry axial turbo compressors. The multiagent control system autonomously adjusts the angles of individual vanes and optimizes compressor efficiency.

A novel distributed intelligent system has been designed to control aerodynamic instabilities caused by stall and surge in variable geometry axial turbo compressors. The multiagent control system autonomously adjusts the angles of individual vanes and optimizes compressor e ciency.

A novel technique for extracting the large‐signal S parameters of a bipolar transistor under class‐c bias has been developed. To verify the applicability of the developed technique, an amplifier at 870 MHz was implemented. Experimental results showed that the amplifier performance was close to prediction. © 1996 John Wiley & Sons, Inc.

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