POSITIONING APPARATUS

A servo system is shown applied to a transducer head. A count of pulses representing movement is subtracted from a digital required position representation giving an error signal. The velocity of movement is also calculated from said pulses and sampling pulses. A predetermined velocity function is f...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SCARROTT G,GB, STEPTOE B,GB
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING FUNCTIONAL ELEMENTS OF SUCH SYSTEMS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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Beschreibung
Zusammenfassung:	A servo system is shown applied to a transducer head. A count of pulses representing movement is subtracted from a digital required position representation giving an error signal. The velocity of movement is also calculated from said pulses and sampling pulses. A predetermined velocity function is formed with an accuracy that varies in a predetermined way as the head nears the required position. A comparator receives the error and function signals and controls a motor drive amplifier.