LOAD STATE ESTIMATING DEVICE OF PROPELLER, LOAD STATE ESTIMATING METHOD OF PROPELLER AND LOAD STATE ESTIMATING PROGRAM OF PROPELLER

摘要

To estimate accurately a propeller load state using the monitoring data of the motor without installing additional measuring instruments.SOLUTION: A load state estimating device of a propeller of present embodiment is a device to estimate the propeller load state of a ship with the propeller driven by a motor, and comprises the current value acquisition unit to acquire the current value of the monitoring data of the motor cited above at the prescribed sampling period, the current value calculation unit to calculate the current value of the observed load representing the propeller load state based on the current value of the monitoring data cited above, the stored data reading unit to read out of the calculated value storage unit by regarding the data row of the observed load as the analysis object data in the predetermined period of the signal analysis object, the signal analysis unit to execute the signal analysis processing for analysis object data, the state estimation unit to estimate the propeller load state based on the execution result of the signal analysis processing and the estimated result output unit to output the estimated propeller load state.SELECTED DRAWING: Figure 6