Spindle position/speed control unit

Details Spindle position/speed control unit Spindle position/speed control unit

1990-06-14

1993-11-09

Ip, Paul

Electricity: motive power systems

Positional servo systems

Multiple mode systems

318602, 318799, 318811, G05B 1118

Patent

active

052606317

ABSTRACT:
The invention relates to a spindle speed/position control system for use in a numerically controlled machine tool such as a lathe. To improve the measurement of spindle speed and position, detected elements are attached directly to the rotatable spindle. A waveform shaping circuit takes the outputs of speed and position detecting sensors, and outputs a variety of sinusoidal and pulse signals. The sinusoidally varying signals are employed in speed detection while the pulse signals are used for position detection and control.

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Yoram Koren et al., "Numerical Control of a Lathe," IEEE Transaction on Industry and General Applications, vol. IGA-6, No. 2, Mar./Apr. 1970.

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