| 摘要 |
A positioning servomechanism, which is liable to damage, or positions other equipment which is liable to damage if extremeties in its positioning locus are encountered at speed, is protected against uncontrolled and catastrophic acceleration towards these extremeties by the provision of apparatus which shuts off power to the servomechanism in the event of its drive output exceeding a predetermined limit, indicative of saturation, for more than a predetermined time period, power being restored by the application of an external signal.
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