FAILURE DETECTION MECHANISM FOR ELECTRIC ACTUATOR, AND ELECTRIC ACTUATOR HAVING THE SAME

摘要

A failure detection mechanism for an electric actuator and/or an electric actuator includes: a first gear mechanism connected to a first motor; a second gear mechanism connected to a second motor; an output section capable of rotating at a speed produced by adding together a rotation speed based on the first gear mechanism and a rotation speed based on the second gear mechanism; a first sensor configured to sense a value of electric current driving the first motor or a value associated with the value of the electric current; a second sensor configured to sense a value of electric current driving the second motor or a value associated with the value of the electric currant and a comparison unit configured to determine a failure based on a result of comparison between a first sensing value from the first sensor and a second sensing value from the second sensor.