| US 7,467,596 B2 | ||
| Trim tab control | ||
| Paul D. Salmon, North Mankato, Minn. (US) | ||
| Assigned to Johnson Outdoors Inc., Mankato, Minn. (US) | ||
| Filed on Jan. 23, 2007, as Appl. No. 11/656,860. | ||
| Prior Publication US 2008/0173227 A1, Jul. 24, 2008 | ||
| Int. Cl. B63B 1/22 (2006.01) | ||
| U.S. Cl. 114—285 | 16 Claims |
| 1. A method of controlling position of a trim tab for a boat, the method comprising:
receiving a tab position command;
driving an actuator to move the trim tab in response to the tab position command;
receiving a feedback signal from the actuator representing incremental motion of the actuator;
maintaining a current tab position count based upon the feedback signal;
displaying an indication of current tab position as a function of the tab position count;
storing the tab position count in non-volatile memory prior to power down; and
retrieving the stored tab position count upon power up for use as the current tab position count.
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