GREGORY DALE JOHNSON
Pilots at 154 Ct, Des Moines, IA
License number
Iowa A0950932
Issued Date
Oct 2015
Expiration Date
Oct 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
3915 154Th Ct, Des Moines, IA 50323
Professional information
Fault Tolerant Analog Outputs For Turbo Compressors
US Patent:
2011011, May 19, 2011
Filed:
Nov 18, 2010
Appl. No.:
12/949304
Inventors:
Gregory D. Johnson - Urbandale IA, US
International Classification:
F02C 9/18, G05D 7/06, G05B 19/04
US Classification:
60793, 700282
Abstract:
A control system for operating a device in a turbo machine system. The system includes a first programmable logic control device producing an analog output signal and a relay circuit electrically connected to the first programmable logic control device to receive the analog output signal. A field device is electrically connected to the relay circuit to receive the analog output signal to operate based on the analog output signal to provide a load. In addition, the relay circuit is electrically connected to a second programmable logic control device to communicate the analog output signal to the second programmable logic control device to monitor the analog output signal.