Servo controller
AssigneeFanuc Corporation
InventorKouichi ETOU
Life of this patent
Estimating the term…
Abstract
A servo controller calculates an alternative movement amount, in a control cycle (n) in which a command cannot be received from the host controller, according to jerk calculated with reference to amounts of movement used for controlling the servomotor in former control cycles before the control cycle (n) and the movement amount used for controlling the servomotor in the previous control cycle before the control cycle (n). The servo controller controls movement of the servomotor by use of the alternative movement amount in the control cycle (n) in which the command cannot be received from the host controller.
Claims3
A servo controller for controlling a servomotor in accordance with an movement amount determined by a command received from a host controller in a predetermined control cycle, the servo controller comprising:
- an alternative command calculation unit configured to, in a control cycle (n) in which a command cannot be received from the host controller, calculate an alternative movement amount according to jerk calculated with reference to amounts of movement used for controlling the servomotor in former control cycles before the control cycle (n) and an movement amount used for controlling the servomotor in a previous control cycle immediately before the control cycle (n);
- and
- a command movement amount adjusting unit configured to control movement of the servomotor by use of the alternative movement amount in the control cycle (n) in which the command cannot be received from the host controller.
Dependencies are inferred from the claim text.