In daily life, many logistics companies are already using AGV automatic guided robots. So what is the driving principle of this AGV robot?
I. DC motor drive management system
The DC motor drive system of AGV was basically driven by DC motor before 1990s. DC motor itself is less efficient and relatively large in size and mass. The commutator and brushes of DC motor drive system limit its speed to 6000-8000r / min. Because of this feature, generally except for small cars, electric vehicles rarely use DC motor drive system.
Induction motor drive
Induction motor was developed and combined with new technology in the 1990s, and is still in the perfection stage. It has the advantages of high efficiency, small size, small mass, simple structure, maintenance-free and long life. The system has a wide range of speed regulation, which can effectively achieve economic low-speed constant torque and high-speed constant power operation, but the cost of AC motor controller is relatively high.
Three, permanent magnet synchronous motor AC drive system
The last one is AC permanent magnet synchronous motor drive system, including a three-phase brushless DC motor and a permanent magnet synchronous motor. Compared with the permanent magnet synchronous motor, the brushless DC motor has higher drive efficiency. The volume is minimal, the mass is minimal, and there are no disadvantages such as DC motor commutators and brushes. But the cost of the drive system is very high, generally only in low-power electric vehicles have applications, permanent magnet synchronous motor is currently the most promising high-performance motor, and towards the direction of electric vehicles.
The above points are the three management systems of AGV unmanned handling robot technology drive control system. They are DC motor drive development system, induction motor AC drive system, permanent magnet synchronous motor drive system, etc. Each drive system has its own advantages and shortcomings, I hope it can help you.
