SHIP MAIN ENGINE CONTROL SYSTEM AND METHOD

WIPO Patent Application WO/2011/125466

A1

The disclosed ship main engine control system and method calculate by simulation a propeller inflow rate which takes into account the ship motion relative to the combination of wave height, wave period, ship velocity relative to the water, ship weight, etc. The change in main engine rotation speed is calculated from the change in the calculated propeller inflow rate, and the standard deviation σ thereof is found. These results are stored as a standard deviation database (16). Referring to the standard deviation database (16), standard deviations are found during ship travel from the wave height, wave period, ship velocity relative to the water, and the ship weight, and an allowable rotation speed deviation ΔNt is calculated. In the control unit (14), PID control of the main engine (11) is performed, and multiple control modes with different gains are provided. The control mode of the control unit (14) is switched on the basis of comparing the rotation speed deviation and the allowable rotation speed deviation ΔNt in a comparison unit (15).

TSUJI Yasuyuki (1-1, Tama 3-chome, Tamano-sh, Okayama 51, 〒7068651, JP)
辻康之 (〒51 岡山県玉野市玉３丁目１番１号　三井造船株式会社　玉野事業所内 Okayama, 〒7068651, JP)
INAMI Shouichi (1-1, Tama 3-chome, Tamano-sh, Okayama 51, 〒7068651, JP)

JP2011/056621

October 13, 2011

March 18, 2011

Click for automatic bibliography generation  

MITSUI ENGINEERING & SHIPBUILDING CO., LTD. (6-4 Tsukiji 5-chome, Chuo-ku Tokyo, 39, 〒1048439, JP)
三井造船株式会社 (〒39 東京都中央区築地５丁目６番４号 Tokyo, 〒1048439, JP)
TSUJI Yasuyuki (1-1, Tama 3-chome, Tamano-sh, Okayama 51, 〒7068651, JP)
辻康之 (〒51 岡山県玉野市玉３丁目１番１号　三井造船株式会社　玉野事業所内 Okayama, 〒7068651, JP)

B63H21/21; F02D29/02

MATSUURA Takashi (Fuji Bldg. #418, 2-3 Marunouchi 3-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)

View/Download PDF      PDF Help

Previous Patent: SHIP ENGINE CONTROL DEVICE AND METHOD

Next Patent: PLASMID VECTOR