電動車齒輪箱之振動量測平台架設與實驗

Platform Setup and Measurement of Electric Vehicle Gearbox

白欽安(Chin-An Pai)

指導教授 ： 黃自貴

國立虎尾科技大學/工程學院/機械設計工程研究所/碩士(2014年)

https://doi.org/10.6827/NFU.2014.00238

摘要

本研究是將齒輪箱架設於實驗平台進行模擬齒輪箱實際於電動車上運轉時的狀況，利用伺服馬達作為動力來源並可控制馬達所輸入的轉速，再由三角皮帶輪組將動能傳遞至齒輪箱輸入軸進行運轉，使齒輪箱與實際安裝於電動車運轉時條件相同，由於齒輪箱運轉時會產生振動訊號，故使用儀器量測運轉時所產生的振動訊號。本研究主要利用加速規來進行量測，將加速規塗上蜜蠟黏貼於齒輪箱各軸的殼體外附近進行量測，測得時域圖及頻譜圖，透過量測到的數據判斷齒輪箱內部的狀況。同時也在齒輪箱輸出軸架設碼表進行量測，將碼表輸入預設輪徑尺寸後可測得齒輪箱輸出端的速度，透過碼表的數值反推得知各軸的轉速、轉頻及齒輪嚙合頻，再與動力來源伺服馬達的轉速計算出傳動時齒輪嚙合頻及各軸轉頻，並將理論推導的數值與加速規及碼表實驗數據進行比對，且在齒輪箱運轉時使用噪音計記錄下運轉時的噪音值做為異音大小的依據。

關鍵字

齒輪箱 ； 加速規 ； 頻譜圖 ； 振動

並列摘要

The thesis aims to set up the gearbox on the experimental platform in order to understand the actual condition when the gearbox runs in the electric vehicle. The servo motor used as a power source controls the rotational speed of the motor, and then the V-belt pulley transmits kinetic energy to the gearbox input shaft so that the gearbox is just like in the actual operation in the electric vehicle. Because the vibration signals are generated during the operation of the gearbox, some instruments are used to measure the vibration signals when the gearbox is operated. In this study, the accelerometers, coated with beeswax and affixed to the shell of the gearbox shaft, are mainly used to measure the time-domain and frequency spectrum. The internal condition of the gearbox was showed and understood by the data. At the same time, after the stopwatch, set up on the gearbox output shaft, is entered the size of the wheel, the speed of the gearbox output will be showed. The data from the stopwatch displays the rotational speed and the transfer frequency of the shafts, as well as the GMF of the wheel. After the GMF of the wheel and transfer frequency of the shafts are counted by the servo motor during the operation, the data from the theory is compared to that from the accelerometers and the stopwatch in the study. During the operation of the gearbox, the noise meter is used to record the noise values to infer the amount of the different sound.

並列關鍵字

Gearbox ； Accelerometer ； Frequency Spectrum ； Vibration

參考文獻

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