Brushless motor as gyro stabilized yuntai even high-end photoelectric pod actuators, brushless dc motor factory, occupied more than 90% market share.
here only analyze the nature of the brushless motor.
advantages:
direct driving load. Without slowing down, without the influence of mechanical backlash. The precision of servo only depends on the measurement accuracy and encoder closed-loop gyro sampling precision.
simple structure: motor stator and rotor. Design, installation and simple.
faults:
poor torque stiffness. Motor direct driving conditions, working in gyro stabilized mode, the motor input is actually the gyroscope to measure the angular velocity. When the plane under the condition of little disturbance, motor, the disturbance angular velocity is small, resulting in motor torque is small. With the hand break near around move feeling is at the origin of force is small. So wind impedance interference ability is poor.
camera balancing requirements:
only on brushless motor design to overcome the friction of the bearing. The camera focus not on the motor axis will make a big probability of self-excitation problem.
