Pulse generating system responding to instruction pulses for gen

Details Pulse generating system responding to instruction pulses for gen Pulse generating system responding to instruction pulses for gen

1994-12-02

1996-08-27

Wysocki, Jonathan

Electricity: motive power systems

Limitation of motor load, current, torque or force

318254, 318696, 360 7702, H02P 700

Patent

active

055504477

ABSTRACT:
A pulse generating unit responds to a series of instruction pulses to generate a series of driving pulses which includes alternately occurring first driving pulses and second driving pulses. The pulse generating unit generates the first driving pulses directly in response to the series of instruction pulses. The pulse generating unit measures a predetermined delay time using a series of reference clock pulses since the unit received the first pulse of the series of instruction pulses. The pulse generating unit generates the second driving pulses after the thus measured predetermined delay time has elapsed. A motor requires an initial exciting period between a first one of the first driving pulses and a first one of the second driving pulses of the series of driving pulses, and requires a steady-state exciting period between each two adjacent pulses of the series of driving pulses. The predetermined delay time is longer than the initial exciting period. A time span between each two adjacent pulses of the series of instruction pulses is longer than a predetermined minimum instruction pulse period. A starting delay time is shorter than a time period obtained as a result of subtracting the steady-state exiting period and the predetermined delay time from the predetermined minimum instruction pulse period. The starting delay time is a time since a reference-clock generating unit started, which time is required for the magnitude of the series of reference clock pulses to reach an effective one.

REFERENCES:
patent: 4514667 (1985-04-01), Sakmann et al.
patent: 4752724 (1988-06-01), Radzwill et al.
patent: 4897583 (1990-01-01), Rees
patent: 5206567 (1993-04-01), Sakurai et al.
patent: 5221881 (1993-06-01), Cameron
patent: 5233275 (1993-08-01), Danino

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