ACTUATOR CONTROL APPARATUS

摘要

An actuator control apparatus includes: a drive circuit configured to apply a current for causing an actuator to drive a driven body; a constant current circuit and configured to control a current value of the current applied to the actuator by the drive circuit; a sense resistance connectable to the drive circuit and in which the current passing through the actuator flows; a change-over switch configured to switch a connection destination of the drive circuit from the constant current circuit to the sense resistance in a predetermined period in a current application period in which the current is applied to the actuator by the drive circuit; and an FPGA configured to detect a resistance value of predetermined circuits including the actuator through which the current passes, based on the current flowing in the sense resistance, and configured to detect an abnormality of the actuator based on the detection result.

主权项

1. An actuator control apparatus comprising:
a drive control circuit configured to apply a current for causing an actuator to drive a driven body, to the actuator configured to drive the driven body by receiving the current; a current control section connectable to the drive control circuit and configured to control a current value of the current applied to the actuator by the drive control circuit; a sense resistance connectable to the drive control circuit and in which the current passing through the actuator flows; a switch section configured to switch a connection destination of the drive control circuit from the current control section to the sense resistance in a predetermined period in a current application period in which the current is applied to the actuator by the drive control circuit; a power supply section configured to supply a voltage to the drive control circuit such that current values of the current applied to the actuator are equal when the switch section switches the connection destination of the drive control circuit from the current control section to the sense resistance; and an abnormality detection section configured to detect a resistance value of predetermined circuits including the actuator through which the current passes, based on the current flowing in the sense resistance, and configured to detect an abnormality of the actuator based on the detection result.