电动滚筒驱动电机噪声的控制分析

电动滚筒是近年来出现的新型带式输送设备的驱动部件,具有适宜在恶劣场合工作的能力。然而,电动滚筒的噪声却带来污染,并在高要求场合应用受到限制,为此必须降低其噪声。在对电动滚筒可能存在的主要噪声源进行分析的基础上,应用频谱识别技术,确定了单相驱动电机是该型电动滚筒的主要噪声源,它使得电动滚筒在100Hz及其高次谐频噪声成分较大。经分析,造成此现象的原因是单相驱动电机的空间不对称驱动力矩,在采用三相电机驱动后,电动滚筒的噪声下降了6～7dB(A)左右,有效地控制了电动滚筒的电磁噪声。

Analysis and Control on Noises in Drive Motor of Motorized Pulley

Recently, motorized pulley, as a new type drive part in equipping driving strap, has the capacity of working in abominable condition. However, the noise of motorized pulley brings pollution and the application in some advanced condition is restricted. Therefore, the noise must be reduced. On basis of the analyses of the main source of the noise, the application of spectrum identification technology ascertains that single-phase motor is the main noise source of this type motorized pulley, and the frequency of 100Hz as well as hypo-humorous is the primary componenty. By analyzing, the cause of the electrophoresis is the dissymmetry between the space of single-phase motor and driving torque. After using three-phase drive, the noise of motorized pulley is declined by 6-7dB（A） and the electromagnetic noise is effectively controlled.