Electric balance car, also known as somatosensory car, thinking car, camera car, etc. There are mainly single wheel and double wheel in the market. Its operation principle is mainly based on a basic principle called "dynamic stabilization".

The gyroscope and acceleration sensor inside the car body are used to detect the change of car body attitude, and the servo control system is used to accurately drive the motor for corresponding adjustment to maintain the balance of the system. It is a new type of green product used by modern people as a means of transportation, leisure and entertainment.

The operation principle is mainly based on a basic principle called "dynamic stabilization", that is, the automatic balance ability of the vehicle itself. The built-in precision solid-state gyroscopes are used to judge the posture state of the vehicle body. After calculating the appropriate instructions through the precision and high-speed central microprocessor, the motor is driven to achieve the effect of balance. [4] 

Brush DC motor or brushless DC motor is often used in the electric balance vehicle system. The brush motor is characterized by fast starting, sensitive braking, smooth speed regulation in a large range and simple control circuit. It is suitable for general power equipment. It can work continuously for 5000 hours and has a conventional service life of two to three years, but it needs to replace the carbon brush for 1000 hours; Brushless motor is the whole of motor and driver. It does not need to replace the brush. It is an electromechanical equipment. It can run continuously for 20000 hours, with a conventional service life of seven to ten years. Digital frequency conversion control speed regulation is easier, and the power consumption is one third of that of brush motor. However, it has high cost and high requirements for control accuracy. It is suitable for equipment with high requirements for speed control.

In the electric balance vehicle system, in order to obtain the acceleration and angular velocity information, the acceleration sensor can convert the acceleration generated in the human motion into a signal for effective processing, so as to judge the action made by the human body; The gyroscope can convert the rotation angular velocity of the electric balance vehicle into a signal, and the rotation angular velocity integral processing corresponds to the tilt angle of the balance vehicle, so as to control the balance of the electric balance vehicle.

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Keyword：Intelligent balance vehicle   electric balance vehicle   somatosensory vehicle   thinking vehicle   position taking vehicle   dynamic stability   solid state gyroscope   Commax-Tech Electronic