Have a motor controller and the brushless motor controller has a lot of difference, can be seen from the name on the motor controller the carbon brush, brushless motor controller without carbon brush. We take a look at the following a motor controller and the comparison of the brushless motor controller is 1, the service life: brushless motor controller: can work continuously for 20000 hours or so, the service life of conventional 7 -For 10 years. A brush motor controller: can work continuously for 5000 hours or so, the service life of the conventional 2 -For three years. 2, use effect: brushless motor controller: in a 90 -95 m/s high speed operation, actual effect can reach 5 -7 s time for drying hands. Have a motor controller: the speed and time to dry hands is far lower than the brushless motor controller. 3, energy-saving aspects: relatively, brushless motor controller of the power consumption is only 1/3 of the carbon brush. 4, noise and service life of the motor controller the noise emitted from the much higher than the brushless motor controller, and with the carbon brush wear in the future, have a brush motor controller will noise brushless motor controller manufacturers more and more big, the brushless motor controller will not be affected. 5, motor controller wear after the maintenance aspects, not only to replace carbon brush, also changing the motor controller peripheral accessories, such as turning gear to a much higher cost. Mostly, the overall function will be affected. In the process of practical production, brushless dc motor controller is due to the high speed motor controller, the gear tooth is small, easy to wear and tear, but brushless motor controller manufacturers strength, strong climbing ability. The brushless dc motor controller, in use process saves two or three years in exchange for carbon brush. But the process in the control of the brushless motor controller, the requirement of high precision. Moreover, the price of the brushless motor controller controller is higher also. Although compared with brush dc motor controller to replace carbon brush, but to replace carbon brush is very easy, and the motor controller is relatively simple, the control of the motor controller smooth operation, high safety coefficient. Brushless motor controller manufacturers by comparing, the use of the use of the brushless motor controller performance than a brush motor controller has more advantages, we can according to use demand to choose the appropriate motor controller or the brushless motor controller is used.