Noise Analysis and Control of Robot Vacuum Cleaners
There are obviously unacceptable abnormal noises of a certain type of robot vacuum cleaners in the development stage when they operating in both power and normal mode.They made sound quality test failed.In this work,the frequency spectrum analysis and some other methods were used to confirm that the abnormal noise of the power mode was the blade passing frequency(BPF)of the fan.Then,the parameters of impeller were optimized by simulation and experiment.The results show that the results of simulation and experiment are in a good consistency,and the abnormal noise problem was solved successfully.In the normal mode,by instant on/off power method,it was proved that the abnormal noise was the electromagnetic noise of motor′s stator,and the electromagnetic noise was further amplified by the bracket of the fan.Afterwards,in view of the noise source and transfer path,two improvement schemes of changing coil winding mode and adding vibration isolation were designed.Test results showed that both the two improvement schemes worked well.The above research ideas can serve as a reference for noise control of robot vacuum cleaners.
万方数据
维普
