The digital control system of the motor has become a new trend. Who can lead the trend?
In recent years, with the application of microprocessors and new digital signal processors (DSPs), digital control systems have emerged. The control part can be completely implemented by software, which is called DC servo system and three-phase permanent magnet AC servo system.
Low-power motors According to the latest report from the international consulting firm, the global motor market will rise from less than $100 billion in 2014 to more than $140 billion in 2022. According to the Grand View study, the motor market will grow at a compound annual growth rate of 4.5% between 2015 and 2022, driven by the development of technologies and regulatory policies aimed at improving energy efficiency.
Moreover, with the application of microprocessors and new digital signal processors (DSPs) in recent years, digital control systems have emerged. The control part can be completely implemented by software, which is called DC servo system and three-phase permanent magnet AC servo system.
First, for low-power motor applications, the cost is more important than complexity and the torque requirements are lower, so single-phase brushless DC (BLDC) motors are a good alternative to three-phase motors. Such motors are simple in construction, easy to manufacture, and therefore low in cost. In addition, it only needs to use a single position sensor and some drive switches to control and power the motor windings.
Secondly, based on the labeling machine process, complex ECAM motion functions need to be designed and implemented, mainly to control the movement of fast and complex indexing mechanisms, such as small trays. These small trays are driven by motors and drives and operate in extreme conditions such as humidity and vibration. In addition, high-speed real-time communication signals need to be transmitted through the slip ring mechanism. These problems require experienced engineers to spend considerable time solving.
Furthermore, microcontrollers (MCUs) are the key to achieving precise "motor control" and "battery management." First of all, in the motor control, since the UAV is equipped with multiple motors and multi-axis control, each motor needs to be equipped with an 8-bit MCU with fast PWM modulation capability and small package characteristics to enhance the control experience.