Microstepping drives with waveform tuning and microprocessor con

Details Microstepping drives with waveform tuning and microprocessor con Microstepping drives with waveform tuning and microprocessor con

1983-12-07

1986-04-22

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02P 800

Patent

active

045845123

ABSTRACT:
These microstepping stepping motor drives have analog and digital embodiments which generate tunable motor current waveforms to reduce low-frequency resonance effects and to make the microsteps more accurate. One digital driver is based upon a microprocessor which includes means for altering the motor current waveforms during a setup mode in response to sensed motor motion. The basis for this operation is in antecedant applications. The waveform alteration process iterates on the harmonic content of the motor motion to alter waveform determining values. The controller also has the capability of creating default motor current waveforms from an input code. It also has the control capability of pulse buffers, and can follow an external velocity input.

REFERENCES:
patent: 4218643 (1980-08-01), Herald
patent: 4443746 (1984-04-01), Araki

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