Rotation control system for Z-type propulsion apparatus
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United States of America Patent
Stats
-
Sep 16, 1986
Grant Date -
N/A
app pub date -
Nov 26, 1984
filing date -
Mar 30, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There is provided a rotation control system for a Z-type propulsion apparatus which can achieve an optimum turning of a vessel under any steering conditions of the vessel by controlling the rotation speed of a hollow rotary housing of the Z-type propulsion apparatus in accordance with the load exerted on the rotary housing, the number of revolution of a propeller provided in the rotary housing, or the combination thereof. A difference between a signal representative of an angle of a steering handle and a signal representative of an angle of the rotary housing is first detected. The detected signal, which is representative of the difference between the angle of the steering handle and the angle of the rotary housing, is then limited in accordance with the load exerted on the rotary housing, speed of the vessel, or the combination thereof, and the rotary housing is driven in accordance with the limited signal.
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