- 學位論文
直流無刷伺服馬達校正與定位系統開發
Development of a Position Calibration System for Brushless DC Motors
摘要
摘要 在機械與電機相關產業上馬達的應用十分普遍，又因伺服馬達應用在定位上優於其他馬達，所以伺服馬達在相關產業的被使用程度相當的高，但馬達內部的軸承使用壽命有限，必須經由人工重新拆裝更換軸承才能使馬達運轉順暢。馬達在長期使用下，軸承會因為潤滑油不足、軸承磨損、軸承安裝不良等問題，導致轉軸運轉不順，所以馬達的維護工作主要重點是軸承的替換與保養，而在伺服馬達保養軸承的過程中難免會去拆卸編碼器，因此維護後編碼器的定位校正為本論文的研究重點。 馬達在保養過程中，最怕去拆卸到編碼器，因為編碼器的校正動作十分繁瑣，而且校正不精準會導致馬達的運轉效率大幅降低並使馬達本體發燙，本論文主要為降低成本、節省人力、提高可靠度，達成編碼器與轉子位置相對關係的校正，因此開發一套半自動伺服馬達校正平台。研究內容包含機構設計、自動化檢測監控程式撰寫、定位系統整合測試等，並以LabVIEW軟體量測反電動勢波形與光學編碼器的相對關係，以達到快速校正的目標，完成半自動伺服馬達維護之校正平台設計，可大幅縮短伺服馬達校正時間、保持伺服馬達效能。 關鍵字:伺服馬達、光學編碼器、LabVIEW、 反電動勢。
並列摘要
Abstract The applications of motors are very common in the machinery and electrical machinery related industry. Furthermore, the localization precision of the servomotor is more superior to the other motors; therefore the servomotor is used in the related industry more than the others. If there are some errors of the phase change position of brushless DC motor and the optical encoder gauges the position, when the motor is driven for any application, the motor main body would feel hot and operate not smoothly or even affects the automatic station operation, no matter the errors are assembly mistake as the motor leaves the plant or reassembly mistake as makes the maintenance service. Therefore, this research in view of the servomotor encoder position gauging and the adjustment designs a set of semi-automatic gauging system for the brushless DC servomotor. We will pick up the three-phase counter electromotive force profile voltage signals to make sure the rotor position and then to adjust the encoder and to focus the disk position of the encoder precisely. The research contains the gauging organization and the examination circuit design, the LabVIEW software composition and the optical encoder and the phase change signal relative relational discussion. We use the semi-automatic measurement system to measure the waveform of the voltage signals of counter electromotive force to decide the phase change signal to compare with the signal of encoder to detect the position error and to complete the adjustment work. The test results show that the proposed system could measure the two signals and adjust the disk position precisely to maintain the efficiency of the servomotor. Keywords: brushless DC servomotor , encoder , LabVIEW