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    • 1. 发明申请
    • MAGNETIC ENCODER APPARATUS
    • 磁性编码器装置
    • WO2013132207A1
    • 2013-09-12
    • PCT/GB2013/000090
    • 2013-03-06
    • RENISHAW PLCRLS MERILNA TEHNIKA D.O.O.
    • KOGEJ, PeterOGRIN, AljazDOLSAK, GregorHAJDINJAK, Blaz
    • G01D5/14G01D5/244
    • G01D5/12G01D5/24409G01D5/2458
    • Magnetic encoder apparatus (2) is described that comprises a plurality of magnetic sensor elements (e.g. Hall sensors) for reading an associated magnetic scale (4; 10) that produces a periodically repeating magnetic pattern. The plurality of magnetic sensor elements produce a plurality of sensor signals and an analyser (7) is provided for analysing the plurality of sensor signals to provide a measure of the position of the magnetic sensor elements relative to the associated magnetic scale (4; 10). The analyser (7) is arranged to use the plurality of sensor signals to assess the period (60) of the periodically repeating magnetic pattern sensed by the plurality of magnetic sensor elements. In this manner, the requirement to carefully match the period of the sensor elements with the periodically repeating magnetic pattern of the associated magnetic scale (4; 10) is avoided.
    • 磁性编码器装置(2)被描述为包括多个磁传感器元件(例如霍尔传感器),用于读取产生周期性重复的磁性图案的相关磁标尺(4; 10)。 多个磁传感器元件产生多个传感器信号,并且提供分析器(7),用于分析多个传感器信号以提供磁传感器元件相对于相关磁标尺(4; 10)的位置的量度, 。 分析器(7)布置成使用多个传感器信号来评估由多个磁性传感器元件感测到的周期性重复磁性图案的周期(60)。 以这种方式,避免了将传感器元件的周期与相关磁标尺(4; 10)的周期性重复的磁性图案仔细地匹配的要求。