ENCODER, MOTOR WITH ENCODER, SERVO SYSTEM, AND SIGNAL PROCESSING METHOD FOR ENCODER

摘要

An encoder includes a measurement target which is coupled to a motor, a module which is positioned relative to the measurement target and generates signals based on motion of the measurement target, and a control device which generates and outputs position data based on the signals from the module and includes a position detector, an abnormality detector, a cause analyzer, a non-volatile memory, and a non-volatile memory controller. The position detector detects a position of the motor, the abnormality detector detects an abnormality based on state information including a state of the position detector, the cause analyzer analyzes the state information when the abnormality detector detects the abnormality such that a cause of the abnormality detected by the abnormality detector is identified, and the non-volatile memory controller stores in the non-volatile memory a result of analysis obtained by the cause analyzer.

主权项

1. An encoder, comprising:
a measurement target coupled to a motor; a module positioned relative to the measurement target and configured to generate signals based on motion of the measurement target; and a control device configured to generate and output position data based on the signals from the module and comprising a position detector, an abnormality detector, a cause analyzer, a non-volatile memory, and a non-volatile memory controller, wherein the position detector is configured to detect a position of the motor, the abnormality detector is configured to detect an abnormality based on state information including a state of the position detector, the cause analyzer is configured to analyze the state information when the abnormality detector detects the abnormality such that a cause of the abnormality detected by the abnormality detector is identified, and the non-volatile memory controller is configured to store in the non-volatile memory a result of analysis obtained by the cause analyzer.