Acceleration Sensor Characterization for Motor Anomaly Detection

The patent introduces position information from a position detector as an intermediary element to bridge the gap between the detached acceleration sensor and the movable part. By combining position data with acceleration data, the system can infer the relationship between the sensor and movable part, enabling anomaly detection without direct physical attachment. This mediator approach allows the system to maintain detection capability while reducing mounting complexity.

The system implements feedback by continuously monitoring both position and acceleration information, then comparing the detected acceleration with expected acceleration based on position data. This feedback mechanism enables the system to detect anomalies in the acceleration sensor's operation or mounting orientation even when detached, as discrepancies between expected and actual acceleration will be detected through the feedback loop.

The patent merges position information from the position detector with acceleration information from the acceleration sensor to create a more comprehensive detection basis. By combining these two types of information, the system achieves higher measurement precision in anomaly detection without significantly increasing device complexity, as both information sources are already present in the motor control system.

The position detector, originally serving its primary function for position control, is also utilized for acceleration-based anomaly detection when combined with acceleration sensor data. This multi-functional use of existing components enables precise anomaly detection without adding dedicated detection hardware, thereby maintaining simplicity while improving measurement precision.