Methods used for the detection of brushless motor controller
brushless motor in theory can be forward or reverse, brushless motor, but quite a lot of best performance actually there is only one direction of motor. This is the most easy to use the instrument test result in that direction. Also, different manufacturers (Sometimes the product of the same manufacturer), due to different production using hall sensor, or the location of the installation. The performance of the motor will also be different. Such as the rotor position sensor pulse signal and the relative position of the rotor position, there are differences. If tailored controller, of course it is possible to match. Because of brushless controller has a dedicated chip and single-chip microcomputer control two kinds big, design and lead is multifarious, so more onerous than motor testing some detection. instrument is divided into three groups: lead the first group of five, thick red and roughness, connect power is negative, thick yellow, blue, thick green alternative motor controller is the color of the corresponding coarse line; A second group of four, thin black, yellow, blue, green to replace brushless motor rotor position sensor signal, set position for controller input signal, the color of the joint controller corresponding fine lines; A third group of three, thin yellow, red, green alternative speed turn to, as the controller input speed signal. Using the potentiometer is to check whether the controller design is reasonable, how to performance. Only to determine the phase sequence, with A moped motor, can use it, with A 2 k & Omega; Resistance to controller between red thin green and fine then. tester is composed of six light emitting diode bridge, and brushless controller inside the drive axle of one-to-one correspondence, the bridge on the luminous tube is yellow, blue, green three colors light tube, put out on the inside of the corresponding power switch tube conduction. The corresponding phase line at this time the positive power supply is connected. By the same token, the bridge of light pipe out under the corresponding internal power switch conduction. The corresponding phase line negative power supply is connected at this time. Three switch corresponding to three position sensor signals, to the controller into the analog signals of rotor position, the switch, talked about what it was in the test in front of the motor, a, b, c. 10 kΩPotentiometer simulation speed turn the hall, usually at a high potential side (Potentiometer clockwise twist the end)。 Can also use it, the direct use of the car itself hall speed turn to, do not turn the turn, the speed signal is generally low potential. the luminous tube bridge out degree, can reflect the internal speed modulation PWM controller on the tube or the tube. All the examples here is PWM and measured in tube. From the bridge of the light-emitting tube (light and shadeFlashing)Contrast degree, can be intuitive feelings turn hall speed control, speed position, the higher contrast should be bigger. Can also coarse controller failure and the quality of the tester, such as the normal controller, press a switch or multiple switch can be at most two out at the same time. And not in the same bridge road, and a out completely, the other a speed turn to position the high light the dark. No matter what position sensor signal changes, the instrument a luminous tube normally on not go out. Or often go out not bright. And not by the rules on, alternate controller and all the bad light, devour asymmetric alternating controller, etc.
