Method and device for identifying faults of controllable pitch propellers

Abstract

The disclosure provides a method and a device for identifying a controllable pitch propeller failure, which belong to the field of ship propulsion devices. The method includes: collecting the oil flow rate and the blade angle of the controllable pitch propeller to be identified, and obtaining the oil flow rate of the controllable pitch propeller to be identified between various adjacent time points within a plurality of set time periods. change amount; according to the blade angle of the control pitch propeller, obtain the second change amount of the oil flow of the control pitch propeller of the first fault; use the oil flow rate of the control pitch propeller to be identified in each set time period respectively The second variation corresponding to the first variation is used as input, and multiple values ​​distributed on the first function are used as output to train the first support vector machine; The first variation in the segment is input into the first support vector machine; if the multiple values ​​output by the first support vector machine are all distributed on the first function, it is determined that the controllable pitch propeller to be identified has a first fault. The present disclosure may determine a controllable pitch propeller failure.

Description

technical field [0001] The present disclosure relates to the field of ship propulsion devices, in particular to a method and device for identifying faults of controllable pitch propellers. Background technique [0002] Adjustable pitch propellers, referred to as controllable pitch propellers, are propellers that allow the blades to rotate to adjust the pitch through the operating mechanism arranged in the propeller hub. When the pitch control propeller adjusts the pitch, the electronic control system receives instructions and controls the valves in the hydraulic system to move, so that the high-pressure oil enters the rod chamber or rodless chamber of the hydraulic cylinder through the oil distributor and oil pipe, and pushes the rod chamber and the rodless chamber. The piston between the rod chambers moves, and the piston rod rigidly connected to the piston drives the paddle to rotate around the rotating shaft through the crank slider mechanism to change the pitch of the pa...

AI Technical Summary

Problems solved by technology

However, the failure of the controllable pitch propeller is formed slowly, and the measurement of parameters such as oil pressure cannot determine whether the controllable pitch propeller is faulty. Usually, the failure of the controllable pitch propeller can be known only when the controllable pitch propeller cannot be used.

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