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| 專利名稱 | Actuating apparatus, Actuating system and method for actuating a working stage to move relative to a platform with high-precision positioning capability (雷射光斑絕對定位驅動裝置及方法) | | 創作型式 | 發明 | | 專利證號 | EP2641694 | | 國別 | 歐洲專利聯盟-義大利 | | 獲證日期 | 2012/03/23 | | 專利摘要 | Provided is a non-contact adjustable hysteretic magnetic encoder which includes a bipolar magnetic block, two magnetic sensing components, a storage, and a controller. After retrieving the current rotation angle by accessing a rotation angle table, the controller determines, by an encoding rule, digital logical values of a first phase signal (A-phase signal) and digital logical values of a second phase signal (B-phase signal) and outputs the digital logical values. The phase difference between a first phase signal and a second phase signal is adjusted, and a hysteresis range, also known as hysteresis angle, is adjusted, according to the grids attributed to the predetermined number of grids before the turning point and the grids attributed to the predetermined number of grids after the turning point. Hence, the non-contact adjustable hysteretic magnetic encoder features enhanced potential of expansion and marked industrial practicability. | IPC國際分類號 | G01B000714 | | 聯絡人 | 王淳右 | | 電話 | #329566 | | EMAIL | f437frank@ncsist.org.tw |
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