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US 10,103,659 B2Granted
Stepper trajectory driver with numerical controlled oscillators operated at frequency provided by a synchronized clock signal
AssigneeMicrochip Technology Incorporated
InventorKeith Curtis
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Abstract
A stepper control circuit includes numerical controlled oscillators configured to provide step signals for multiple axes of stepper motor movement. The numerical controlled oscillators are configured to be operated at a same frequency provided by a synchronized clock signal.
Claims16
A stepper motor control circuit comprising:
- a first numerical controlled oscillator configured to provide step signals for a first axis of stepper motor movement;
- a second numerical controlled oscillator configured to provide step signals for a second axis of stepper motor movement;
- and
- a prescaler oscillator configured to offset operation of the first numerical controlled oscillator by one half of a remainder difference of a divisor, the divisor including a ratio between a first count of steps to be performed by the first numerical controlled oscillator and a second count of steps to be performed by the second numerical controlled oscillator;
- wherein the first and second numerical controlled oscillators are configured to be operated at a same frequency provided by a synchronized clock signal.
2 more elements
A method for controlling a stepper motor, comprising:
- providing step signals for a first axis of stepper motor movement by a first numerical controlled oscillator;
- providing step signals for a second axis of stepper motor movement by a second numerical controlled oscillator;
- and
- offsetting operation of the first numerical controlled oscillator by one half of a remainder of a difference of a divisor, the divisor including ratio between a first count of steps to be performed by the first numerical controlled oscillator and a second count of steps to be performed by the second numerical controlled oscillator;
- wherein control of the first and second numerical controlled oscillators is performed at a same frequency by a synchronized clock signal.
2 more elements
Dependencies are inferred from the claim text.