G - Physics – 05 – B
Patent
G - Physics
05
B
341/95
G05B 9/03 (2006.01) F01D 17/24 (2006.01) G01P 3/48 (2006.01)
Patent
CA 1199708
DUAL TURBINE CONTROLLER ABSTRACT OF THE DISCLOSURE Primary and secondary controllers both receive independent digital representations of shaft speed. Only one of the outputs of the two controllers is used. In order to detect a fault and isolate it to one of the two controllers, comparison is performed on the response of each controller with the response of the other controller. In addition, the response of each controller is compared with a system mathematical model which predicts the response which each controller should provide to a given set of inputs. If the first comparison indicates that one of the controllers is bad, the comparison with the system mathematical model identifies the faulty controller and provides a signal which removes it from operation and enables the good controller to begin providing control signals.
425850
Chang Hsiao-Nan L.
Cline John A.
Company General Electric
Eckersley Raymond A.
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