Acceleration/deceleration control circuit for a stepping motor

Details Acceleration/deceleration control circuit for a stepping motor Acceleration/deceleration control circuit for a stepping motor

1977-07-08

1978-10-10

Hohauser, Herman

Electricity: motive power systems

Open-loop stepping motor control systems

328 44, H03K 116

Patent

active

041199022

ABSTRACT:
An acceleration/deceleration control circuit for a stepping motor includes a plural stage up/down counter connected to a source of pulses of constant repetition rate. The up/down counter output is connected to a decoder, such as a digital/analog converter, and conventionally, the output of the decoder is coupled to a variable rate oscillator, whose frequency increases, for example, as the output voltage of the digital/analog converter increases, and vice versa. The variable rate output is provided as an input to the stepping motor. In the improved arrangement a series RC circuit is coupled to the output of the decoder and the input of the variable rate oscillator is connected across the capacitor.

REFERENCES:
patent: 3886459 (1975-05-01), Hufford et al.
patent: 3899729 (1975-08-01), Emery

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