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US 6,204,625 B1Granted
Driving apparatus for stepping motor
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorMasakazu Seno
Life of this patent
Estimating the term…
Abstract
A driving apparatus equipped with a step controlling circuit drives stepping motors in a micro stepping manner. An encoder which detects a mover position of the motor supplies a signal to the controlling circuit, thereby halting the micro-step-driving. This structure eliminates the influence by detent torque, and allows the apparatus to control a motor positioning in an accurate manner.
Claims5
An apparatus for driving a stepping motor, said apparatus comprising:
- a stepping motor;
- an encoder for detecting a position of a mover of said motor;
- a controller for outputting a pseudo-sine-wave-signal with synchronizing a clock signal in response to receiving an instruction-pulse-signal, the pseudo-sine-wave-signal being used for driving said stepping motor in a micro step manner, and for halting the pseudo-sine-wave-signal in response to receiving a detection signal supplied from said encoder;
- and
- a driver for amplifying the pseudo-sine-wave-signal to drive said stepping motor.
2 more elements
An apparatus for driving a stepping motor, said apparatus comprising:
- a stepping motor including a mover and a stator wound with a stator coil;
- an encoder for detecting a position of the mover;
- a controller for outputting a driving signal with synchronizing a clock signal in response to receiving an instruction-pulse-signal, the driving signal being used for driving said stepping motor, and for halting the driving signal in response to receiving a detection signal supplied from said encoder;
- and
- a driver for amplifying the driving signal to magnetize the stator coil.
2 more elements
Dependencies are inferred from the claim text.