Servo drive and encoder signal processing ic
AssigneeHarmonic Drive Systems Inc.
InventorsKozo Sasaki, Yuichi Mizuguchi
Life of this patent
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Abstract
A servo driver (3) includes: an input section (11) for input-specifying the type of an encoder (7) at the side of an actuator (2); a control section (13) for generating a control signal (12) according to the type input; and an encoder signal processing IC (20) for switching the input port to which reception data (7S) is input form the encoder (7) according to the control signal (12). The encoder signal processing IC (20) is compatible with processing of an output of either a line-saving encoder or a 14-line encoder and can realize a highly general-purpose servo driver. This can solve the problem that the servo driver should be modified according to the type of the encoder mounted on the actuator.
Claims4
A servo driver for driving/controlling an actuator on the basis of encoder output signals fed from an encoder attached to the actuator to be controlled, comprising:
- an encoder type input section for inputting whether the encoder is a line-saving encoder or a 14-line encoder, and/or whether the encoder is an incremental encoder or an absolute encoder,
- a control section for generating a control signal that corresponds to encoder type information input via the encoder type input section,
- an encoder signal processing section for processing the encoder output signal and generating a parallel signal that shows positional information of the actuator and the like, on the basis of the control signal, and
- a drive control section for servo-controlling the actuator on the basis of the parallel signal.
Dependencies are inferred from the claim text.