Angle position transmitter having a static magnetic field sensor and a magnet on the transmitter shaft for detecting a full revolution of the transmitter shaft
First Claim
1. An angle position transmitter for determining a position angle for a rotatable machine, comprising:
- a transmitter shaft for transmitting rotary motion from the machine part;
a photoelectrically scannable transmitter disc mounted on said transmitter shaft, for detecting the angle position of the shaft within one revolution;
at least two anti-friction bearings positioned along said transmitter shaft supporting said shaft;
at least one magnet arranged on said transmitter shaft between said bearings so as to rotate with said transmitter shaft and make full rotations; and
at least one stationary magnetic field sensor for detecting a full revolution of said magnet and indicating the direction of the rotation of said transmitter shaft.
1 Assignment
0 Petitions
Accused Products
Abstract
In an angle position transmitter with a photoelectrically scannable transmitter disc and doubly supported transmitted shaft, the angle position transmitter determines the angle position of a rotary machine element so as to indicate absolute position with less than a full revolution. The measuring range is increased several times without adversely affecting the compact design of the angle position transmitter which is already limited by the need for a double support of the transmitter shaft. A magnet revolving with the transmitter shaft signals full revolutions of the transmitter shaft at a stationary magnetic field sensor. The full rotations are counted in a revolution counter. A sign is determined by the direction of motion. The magnet rotates in the dead space between two antifriction bearings of a transmitter shaft. The angle position transmitter is particularly well suited for use in machine tools, robots and motor vehicles.
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Citations
6 Claims
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1. An angle position transmitter for determining a position angle for a rotatable machine, comprising:
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a transmitter shaft for transmitting rotary motion from the machine part; a photoelectrically scannable transmitter disc mounted on said transmitter shaft, for detecting the angle position of the shaft within one revolution; at least two anti-friction bearings positioned along said transmitter shaft supporting said shaft; at least one magnet arranged on said transmitter shaft between said bearings so as to rotate with said transmitter shaft and make full rotations; and at least one stationary magnetic field sensor for detecting a full revolution of said magnet and indicating the direction of the rotation of said transmitter shaft. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification