Back to results
US 4,855,657 AGranted
Positioning system
AssigneeFanuc Corporation
InventorsShinichi Isobe, Yoshimasa Kagawa
Life of this patent
Estimating the term…
Abstract
A positioning system rotates a servomotor (4) in response to a command value to move a movable unit and compares a feedback signal from a position detector, such as a servomotor or the like, with the command value to output a servo command signal. Pulses from an encoder (5) are counted to generate a positional information signal (6) directly indicative of an angular position of the servomotor (4), and the positional information signal is fed back to a command processor (2) to effect a positioning operation.
Claims7
A positioning system, including a movable unit, comprising:
- a servomotor, operatively connected to receive a command value and coupled to the movable unit, rotatable in response to the compound value for moving the movable unit;
- a positioning detector mounted on said servomotor and outputting a feedback signal;
- command means, coupled to said position detector and the movable unit, for comparing a feedback signal from said position detector and the movable unit with the command value and outputting a servo command value;
- and
- positional information generating means, coupled to said servomotor and the movable unit, for generating a positional information signal indicative of positional information of one of said servomotor and the movable unit, the arrangement being such that the positional information signal from said positional information generating means is fed back to said command means for performing a positioning operation.
2 more elements
A positioning system, comprising:
- a pulse distributor;
- a command processor coupled to said pulse distributor;
- a servo amplifier coupled to said command processor;
- a servomotor coupled to said servo amplifier and outputting a feedback signal;
- a serial-parallel converter, coupled between said command processor and said servomotor, for receiving the feedback signal and outputting the converted feedback signal to said command processor for performing a positioning operation.
2 more elements
Dependencies are inferred from the claim text.