Autopilot having an adaptive deadband feature

Details Autopilot having an adaptive deadband feature Autopilot having an adaptive deadband feature

1993-12-14

1994-07-19

Black, Thomas G.

Boots, shoes, and leggings

364443, 364444, 364457, 114144RE, G06F 1550, G05D 100

Patent

active

053315588

ABSTRACT:
A marine autopilot having a deadband feature to reduce ineffectual rudder movement and unnecessary wear on the rudder and associated drive apparatus. In a first deadband operation, four deadband values are computed based on various parameters in order to provide optimum system performance and circuit redundancy. The deadband values are a function of the maximum allowable heading error, the maximum allowable angular velocity of the vessel, and the vessel speed. A second deadband operation compensates for noise introduced into the autopilot system by the speed sensor, compass, and roll sensor.

REFERENCES:
patent: 3919961 (1975-11-01), McDougal
patent: 4074648 (1978-02-01), Reid et al.
patent: 4595867 (1986-06-01), Cognevich, Sr. et al.
patent: 4692868 (1987-09-01), Wesner et al.
patent: 4799163 (1989-01-01), Wesner
patent: 5107424 (1992-04-01), Bird et al.
patent: 5179905 (1993-01-01), Hossfield et al.

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