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US 4,291,262 AGranted
Servo positioning apparatus
AssigneeRicoh Company, Ltd.
InventorYoshinori Nakajima
Life of this patent
Estimating the term…
Abstract
While a motor shaft (13) is moving from a previous position to a present command position, the number of steps between the present command position and a new command position is calculated. After the shaft (13) reaches the present command position, the shaft (13) is driven to the new command position in accordance with the calculated number of steps.
Claims8
A servo positioning apparatus including a motor having a shaft and drive means for applying drive power to the motor, characterized by comprising:
- position difference storage means for storing a present position difference between a previous command shaft position and a present command shaft position, the drive means applying drive power to the motor in accordance with the present position difference;
- computing means for computing a new position difference between a new command shaft position and the present command position while the shaft is moving from the previous command position to the present command position;
- and
- control means for controlling the position difference storage means to store the new position difference when the shaft reaches the present command position.
1 more element
Dependencies are inferred from the claim text.