PATENT CLAIM ANALYSIS

Application Number: 15918391
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["318", "135000"]

Abstract:
Linear motor and method to determine absolute position of a rotor movable with respect to a stationary part in a direction of movement, without movement of rotor, without additional permanent magnets, without a close arrangement of position sensors, and also during large movements of rotor, at least one edge area of an arrangement of drive magnets is determined, and rough position of rotor is derived, and using known geometry of rotor, specific drive magnet of the arrangement of drive magnets is determined whose magnetic field is detected by at least one of the position sensors in the area of the arrangement of drive magnets. At least one position sensor determines a relative position of measured drive magnet with respect to the at least one position sensor, and absolute position of rotor is determined from known mounting position of this at least one position sensor and from determined relative position.

Claim (Index 12):
A linear motor having a stator ( 2 ) and a rotor ( 3 ) that is movable along the stator ( 2 ), wherein an arrangement of drive magnets ( 4 ) in the form of a plurality of drive magnets ( 4 ) arranged adjacently in the direction of movement (x) of the rotor ( 3 ), with a pole pitch (\u03c4 p ), is provided on the rotor ( 3 ), and a plurality of position sensors (Sn\u22121, Sn, Sn+1) are stationarily arranged in the linear motor ( 1 ) at a distance from one another at a sensor distance (I S ) in the direction of movement (x) of the rotor ( 3 ), wherein the position sensor (Sn\u22121, Sn, Sn+1) detects a magnetic field of a drive magnet ( 4 ) of the arrangement of the drive magnets ( 4 ) in the area of the position sensor (Sn\u22121, Sn, Sn+1), wherein the sensor distance (I S ) of the position sensors (Sn\u22121, Sn, Sn+1) is greater than the pole pitch (\u03c4 p ) of the drive magnets ( 4 ), wherein an evaluation unit ( 10 ) is provided that determines an edge area ( 8 ) of the arrangement of drive magnets ( 4 ) and derives a rough position of the rotor ( 3 ) therefrom, on the basis of which, using the known geometry of the rotor ( 3 ), the specific drive magnet ( 4 ) of the arrangement of drive magnets ( 4 ) is determined whose magnetic field is detected by at least one position sensor (Sn\u22121, Sn, Sn+1) in the area of the arrangement of drive magnets ( 4 ), wherein the at least one position sensor (Sn\u22121, Sn, Sn+1) determines a relative position (x i ) of the measured drive magnet ( 4 ) with respect to the at least one position sensor (Sn\u22121, Sn, Sn+1), and wherein the evaluation unit ( 10 ) determines the absolute position (x ist ) of the rotor ( 3 ) from the known mounting position (E Sn\u22121 , E Sn , E Sn+ 1) of this at least one position sensor (Sn\u22121, Sn, Sn+1) and from the determined relative position (x i ).

Metadata:
- Claim Count in Document: 26.0
- Percentile: 90.0
- Lexical Diversity: 2.58065
- Patent Class: 318.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15694800', '14112315', '14125160', '14651106', '15297082']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.681506476464649
- 35 USC 102 Novelty (BERT): 0.4751532970315613
- Combined Prediction Score: 0.6608711585213403
- Mean Citation Score: 176.41423999999995
- Max Citation Score: 181.54485
- Similarity Product: 137.21915222241282

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test