This
website provides access to ball bearing test data for normal and faulty bearings. Experiments were conducted using a 2 hp Reliance Electric motor, and acceleration data was measured at locations near to and remote from the motor bearings.
電動機軸承通過使用electro-discharge
machining(EDM)來製造出故障。 Faults ranging from 0.007 inches in diameter to 0.040 inches in diameter were introduced separately at the inner raceway, rolling element (i.e. ball) and outer raceway. Faulted bearings were reinstalled into the test motor and vibration
data was recorded for motor loads of 0 to 3 horsepower (motor speeds of 1797 to 1720 RPM).
Project History
爲了驗證新的技術、理論,常常需要實驗。這些電機軸承實驗被進行是爲了取得IQ PreAlert(一個由Rockwell開發的電機軸承狀態評估系統)的性能特徵。從這一項目進行以來,獲取了一系列可以用來驗證或改進電機性能評價技術的電機性能數據庫。一些已經或正在利用這些數據庫的項目包括:Winsnode狀態評估技術,基於模型的診斷技術,電機轉速確定算法。
設備 & Procedures
如圖1所示,實驗平臺包括一個2馬力的電機(左側),一個轉矩傳感器(中間),一個功率計(右側)和電子控制設備(沒有顯示)。被測試軸承支承電機軸。使用電火花加工技術在軸承上佈置了單點故障,故障直徑分別爲0.007、0.014、0.021 mils、0.028 mils和0.040英寸(1釐米=0.001 英寸)。See FAULT SPECIFICATIONS for fault depths.其中前三種故障直徑的軸承使用的是SKF軸承,後兩種故障直徑的軸承使用的是與之等效的NTN軸承。主動端軸承和fan end bearing specifications, including bearing geometry and defect frequencies are listed in the BEARING SPECIFICATIONS.
實驗中使用加速度採集振動信號,通過使用磁性底座將傳感器安放在電機殼體上。加速度傳感器分別安裝在電機殼體的驅動端12點鐘的位置。在有些實驗中,傳感器也被安放在電機支承底盤上。振動信號是通過16通道的DAT記錄器採集的,並且後期在MATLAB環境中處理。數字信號的採樣頻率爲12000Hz,驅動端軸承故障數據同時也以48000Hz的採樣速率採集。 Speed and horsepower data were collected using the torque transducer/encoder and were recorded by hand.
外圈的故障是固定不變的,因此故障相對於軸承受載區域的位置對電機/軸承系統的振動響應由直接的影響。爲了對這個影響進行定量研究,實驗中分別對驅動和風扇端的軸承外圈佈置3點鐘(直接位於受載區)、6點鐘(正交於受載區)、12點鐘方向的故障。
想要的聯繫我
This
website provides access to ball bearing test data for normal and faulty bearings. Experiments were conducted using a 2 hp Reliance Electric motor, and acceleration data was measured at locations near to and remote from the motor bearings.
電動機軸承通過使用electro-discharge
machining(EDM)來製造出故障。 Faults ranging from 0.007 inches in diameter to 0.040 inches in diameter were introduced separately at the inner raceway, rolling element (i.e. ball) and outer raceway. Faulted bearings were reinstalled into the test motor and vibration
data was recorded for motor loads of 0 to 3 horsepower (motor speeds of 1797 to 1720 RPM).
Project History
爲了驗證新的技術、理論,常常需要實驗。這些電機軸承實驗被進行是爲了取得IQ PreAlert(一個由Rockwell開發的電機軸承狀態評估系統)的性能特徵。從這一項目進行以來,獲取了一系列可以用來驗證或改進電機性能評價技術的電機性能數據庫。一些已經或正在利用這些數據庫的項目包括:Winsnode狀態評估技術,基於模型的診斷技術,電機轉速確定算法。
設備 & Procedures
如圖1所示,實驗平臺包括一個2馬力的電機(左側),一個轉矩傳感器(中間),一個功率計(右側)和電子控制設備(沒有顯示)。被測試軸承支承電機軸。使用電火花加工技術在軸承上佈置了單點故障,故障直徑分別爲0.007、0.014、0.021 mils、0.028 mils和0.040英寸(1釐米=0.001 英寸)。See FAULT SPECIFICATIONS for fault depths.其中前三種故障直徑的軸承使用的是SKF軸承,後兩種故障直徑的軸承使用的是與之等效的NTN軸承。主動端軸承和fan end bearing specifications, including bearing geometry and defect frequencies are listed in the BEARING SPECIFICATIONS.
實驗中使用加速度採集振動信號,通過使用磁性底座將傳感器安放在電機殼體上。加速度傳感器分別安裝在電機殼體的驅動端12點鐘的位置。在有些實驗中,傳感器也被安放在電機支承底盤上。振動信號是通過16通道的DAT記錄器採集的,並且後期在MATLAB環境中處理。數字信號的採樣頻率爲12000Hz,驅動端軸承故障數據同時也以48000Hz的採樣速率採集。 Speed and horsepower data were collected using the torque transducer/encoder and were recorded by hand.
外圈的故障是固定不變的,因此故障相對於軸承受載區域的位置對電機/軸承系統的振動響應由直接的影響。爲了對這個影響進行定量研究,實驗中分別對驅動和風扇端的軸承外圈佈置3點鐘(直接位於受載區)、6點鐘(正交於受載區)、12點鐘方向的故障。