| 摘要 |
PURPOSE: A method for controlling an electric steering device is provided to correct the position of a motor by calculating an absolute angle. CONSTITUTION: A method for controlling an electric steering device comprises following steps. The encoder for measuring the electric angle of a motor and the output values of hall sensors are inputted(S10). Whether or not the hall sensors are abnormal is detected(S20). An absolute angle is measured by the hall sensor if the hall sensor is abnormal(S24). The relative angle to the output of the encoder is corrected to the absolute angle(S28). A malfunction signal is outputted if the hall sensor is abnormal. The malfunction signal is outputted if one or more hall sensors are abnormal(S18). [Reference numerals] (AA) Start; (BB) Finish; (S10) Inputting the output values of an encoder and a plurality of hall sensors; (S12) Calculating the relative angle; (S14) The hall sensor is abnormal?; (S16) Calculating the absolute angle; (S18) Outputting an abnormal signal; (S20) Whether or not the hall sensors are abnormal is detected; (S22) Set time passed?; (S24) Estimating the absolute angle; (S26) Conversion into a manual mode; (S28) Correcting the relative angle by the absolute angle |
