Brushless motor drives occupy a very important role in industrial applications , Elinker Electric Co., Ltd. As a professional manufacturer of terminal blocks , mainly to do a brief analysis of its application on the terminal wiring and basic control methods:

 

Brushless motor drives commonly used terminals

 

This section uses a brushless motor drive is Elinker electrical manufacturing of LC and LZ series male and female with PCB terminals. LC1 series has pitch as 3.5,3.81,5.0,5.08,7.5,7.62 Poles 2-24 lines, providing a socket with screws to match , seismic connections. Use the side plug connection technology , which screw into the line direction and the direction perpendicular to the wire . LZ and LC series is the perfect companion .

 

The control method of the brushless motor drive

 

When the motor is turning up , the control unit will then be the hall-sensor signal changes according to the speed command to set the drive speed and acceleration / deceleration rate is composed of (Command) compared to ( or by software operation ) again determined by the next group ( AH, BL or AH, CL or BH, CL or ...... ) switch is turned on, and the length of conduction . Then open long enough speed , speed overshoot is cut short , this part of the work is done by the PWM . PWM motor speed is fast or slow decision the way , how to produce such a PWM core is to achieve more precise speed control . High speed speed control system must take into account the resolution is sufficient to grasp CLOCK processing software instruction time , in addition to the hall-sensor signal changes also affect the way data access to the processor performance and determine correctness , timeliness . As for low-speed low- speed control , especially since starting the hall-sensor signal changes more slowly returned , and how to capture signaling , processing timing and properly configured according to the motor characteristic control parameters is very important . Or return to change the speed of change in the reference encoder , the signal resolution is increased in order to get better control . Motor can run smoothly and good response , PID control can not be ignored or not properly .

 

Brushless DC motors mentioned before is a closed -loop control , and therefore the feedback signal would be tantamount to telling the motor speed control unit is now much worse from the target rate , which is the error (Error). Know the nature of the error is necessary to compensate the traditional way of engineering controls such as PID control . But state and Environmental Control is actually complex , the factors to control the rugged probably will have to consider the traditional engineering controls are not able to fully grasp, so fuzzy control, expert systems and neural networks will also be incorporated to become smart important theoretical PID control.