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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AS5304 датащи(PDF) 22 Page - ams AG |
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AS5304 датащи(HTML) 22 Page - ams AG |
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22 / 31 page  Page 22 ams Datasheet Document Feedback [v2-00] 2017-May-03 AS5304/AS5306 − Application Information Maximum Rotation Speed The AS5304/AS5306 use a fast interpolation technique allowing an input frequency of 5kHz. This means, it can process magnetic field changes in the order of 5000 pole pairs per second or 300000 revolutions per minute. However, since a magnetic ring consists of more than one pole pair, the above value must be divided by the number of pole pairs to get the maximum rotation speed: Maximum rotation speed = 300000 rpm / [number of pole pairs] Example: (same as above) Multi-pole ring with 22 pole pairs: Maximum speed = 300000 / 22 = 13636 rpm (this is independent of the pole length) Maximum Linear Travelling Speed For linear motion sensing, a multi-pole strip using equally spaced north and south poles is used. The pole length is again fixed at 2.0mm for the AS5304 and 1.2mm for the AS5306. As shown in Maximum Rotation Speed above, the sensors can process up to 5000 pole pairs per second, so the maximum travelling speed is: Maximum linear travelling speed = 5000 * [pole pair length] Example: Linear multi-pole strip: Maximum linear travelling speed = 4mm * 5000 1/s = 20000mm/s = 20m/s {for AS5304} Maximum linear travelling speed = 2.4mm * 5000 1/s = 12000mm/s = 12m/s {for AS5306} |
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