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Patent Searching and Data


Title:
TURNING CONTROL DEVICE FOR SHIP PROPULSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/054304
Kind Code:
A1
Abstract:
[Problem] To balance the load distributed on multiple AC servomotors of an electric turning control device. [Solution] A turning control device (2) for controlling a turnable ship propulsion device has: a turn control board (7) that computes a digital motor-speed command value from a deviation between a signal from a sensor (6), which detects a turn position of the ship propulsion device, and a handle signal; and multiple AC servo amplifiers (A1, A2) that output motor-speed command values upon receiving the motor-speed command value from the turn control board in order to drive AC servomotors (M1, M2). Each amplifier reduces the motor-speed command value in accordance with the amount of load during a motoring operation of the motor, increases the motor-speed command value in accordance with the amount of load during a regenerative operation, or makes no correction if the amount of load on the motor is equal to or less than a fixed value. The loads on the multiple AC servomotors can be distributed with a uniform value.

Inventors:
KODERA MASANORI (JP)
TANAKA SHINICHI (JP)
TAKEI KOJI (JP)
SHIRAISHI KOICHI (JP)
HIGUCHI KAZUHISA (JP)
Application Number:
JP2013/060790
Publication Date:
April 10, 2014
Filing Date:
April 10, 2013
Export Citation:
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Assignee:
NIIGATA POWER SYSTEMS CO LTD (JP)
International Classes:
B63H25/24; B63H5/125; B63H20/00; B63H25/42
Foreign References:
JP2010058741A2010-03-18
JP2011063064A2011-03-31
JP2009227235A2009-10-08
JP2009057002A2009-03-19
JP2010058741A2010-03-18
Other References:
See also references of EP 2905219A4
Attorney, Agent or Firm:
NISHIMURA Norimitsu et al. (JP)
Norimitsu Nishimura (JP)
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