Angle-position sensor for the absolute measurement of the angle of rotation over a plurality of revolutions
AssigneeASM Automation Sensorik Messtechnik GmbH
InventorsKlaus-Manfred Steinich, Peter Wirth
Life of this patent
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Abstract
A robust angle-position sensor for the absolute measurement of the angle of rotating or angle position, respectively over several revolutions has a resolver and further inductive angle of rotation sensor elements. Switching elements of a time multiplex device are in the form of toroidal core chokes. The electronic processing circuit is arranged at a point remote from the point of measurement.
Claims5
An angle-position sensor for the absolute measurement of the angle of rotation over a plurality of revolutions, comprising:
- a resolver connected with a rotary shaft to be monitored as a fine angle-position sensor element and providing analog AC output signals corresponding to fine angle-position;
- a plurality of coarse angle-position sensor elements respectively coupled with the rotary shaft via a step down transmission, each coarse angle-position sensor element being an inductive sensor element and providing analog AC output signals corresponding to coarse angle-position;
- an analog/digital converter for modulation and conversion of the analog AC output signals from the individual sensor elements into binary word data;
- a time multiplexer for sequentially supplying the analog AC output signals from the individual sensor elements to the analog/digital converter;
- and
- an electronic processing circuit for storing the binary word data from the individual sensor elements and combining the same as absolute angular information over several revolutions, wherein
- the time multiplexer comprises a plurality of switching elements, each switching element including a torodial core choke and each torodial core choke including a switching winding and a switched winding.
An angle-position sensor for the absolute measurement of the angle of rotation over a plurality of revolutions, comprising:
- a resolver connected with a rotary shaft to be monitored as a fine angle-position sensor element and providing analog AC output signals corresponding to fine angle-position;
- a plurality of coarse angle-position sensor elements respectively coupled with the rotary shaft via a step down transmission, each coarse angle-position sensor element being an inductive sensor element and providing analog AC output signals corresponding to coarse angle-position;
- an analog/digital converter for modulation and conversion of the analog AC output signals from the individual sensor elements into binary word data;
- a time multiplexer for sequentially supplying an analog AC output signals from the individual sensor elements to the analog/digital converter;
- and
- an electronic processing circuit for storing the binary word data from the individual sensor elements and combining the same as absolute angular information over several revolutions, wherein
- the time multiplexer comprises a plurality of switching elements, each switching element including a torodial core choke and each torodial core choke including a switching winding and a switched winding,
- wherein said plurality of switching windings is connected to said electronic processing circuit via control lines thus being switched on/off by a driving current from said electronic processing circuit.
Dependencies are inferred from the claim text.