聯軸器主要用於傳遞兩軸動力，且具有緩和衝擊、吸收平行、偏角、軸向等誤差的特性及系統傳遞動力的功能。聯軸器在使用上，只有將軸心校正，才能避免動力消耗、設備振動及聯軸器、軸承、軸封等元件的快速磨損。使用雷射軸心校正儀做精密軸心校正工作，是最有時效性的，且校正精度高於量錶許多，但是購置費用約為數十萬，價格太高一般公司很難採買，且這種儀器皆為國外進口，國內若有人研究這類儀器工作原理，再進一步開發成為儀器，勢必可以讓雷射軸心校正儀售價降低，並且能讓國內儀器發展能更向前邁進。
經由本研究之光線追蹤理論推導，配合『位置感測器校正實驗治具』和『模擬馬達與泵浦軸心校正實驗治具』的設計及實驗結果，利用位置感測器校正實驗治具進行雷射光點位移量與位置感測器信號輸出數值實驗，結果證實雷射光點位移量與位置感測器信號輸出數值為線性關係。透過模擬馬達與泵浦軸心校正實驗治具之實驗結果，可以發現與光線追蹤理論推導之結果相似。由上述兩實驗結果可知光線追蹤理論可應用於軸心校正的工作。

Couplings are used to transmit powers between two shafts as well as to retard the impacts, to absorb and correct the deviation caused by parallel, deflection, and shaft direction as well as to systematically transmit power. In the usage of couplings, calibration on shaft is the very effective action to be conducted to avoid power consumption, equipment vibration, and the rapid abrasion of couplings, bearings and seal.Laser Alignment of Shaft is the most time-efficient gauge to conduct the calibration on coupling and is much more precise than meters. However, the high cost of it is the major concern for most of companies and people cannot purchase it domestically. If we Taiwanese can research the operation principles of Laser Alignment of Shaft and further develop our own equipment, this will facilitate the domestic development of the calibration and largely reduce the selling price of Laser Alignment of Shaft.
Based on the theory of light tracking, complying with the design and experiment results of “Position Sensing Calibration Fixture” and “Virtual Mode and Pump Shaft Experimental Fixture”, the result shows linear relation between the motion amount of laser light point and the signal output value of position sensor when we apply Position Sensor Calibration Fixture to proceed the experiment.Corresponding to the experiment result of Virtual Mode and Pump Shaft Calibration Experimental Fixture, we found the similar result of light tracking theory According to the above results, we can confirm the application of light tracking theory can be done on calibration.

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