What's encoder technology in brushless gimbal control system?

The 3 axis stabilization gimbal system that relies on both active motor-driven components and passive inertial stabilization. Passive stabilization relies on the principles of inertia (tendency of an object to resist change in its motion) and requires that the camera is well-balanced in the Pan, Tilt, and Roll Axes. Active stabilization refers to the techniques of using sensors to measure the camera’s Pan, Tilt, and Roll movements and counteract those movements using motors attached to the 3 axes.

Features

Easy to do gimbal tuning, no need to do much calibration work any more.

Power saving, 5 times long working time than gimbal without encoder system.

Twin IMUs.

Faster response, motor torque increasing instantly, no bug for difficult rotating angle any more.

Encoder chip AS5048A

GM3506 Gimbal motor with Encoder AS5048A

The GM35 series motor by iPower Motors is the ultimate brushless gimbal motor for SLR and similar weight Cameras. This motor is designed for large-scale multi-rotor platforms looking to lift SLR sized gear – 1.5KG/cm Torque. The principle of the camera stabilization using brushless direct drive motors, In fact, gimbal based on BLDC motors is very similar to regular gimbal based on hobby servo.

Encoders are special sensors that are added to each brushless motor of a Gimbal Stabilizer allowing the system to more accurately track motor position for increased stability which in turn also increases battery efficiency.

Specifications

Model: GM3506

Motor Out Diameter: Ф40±0.05mm

Configuration: 24N/22P

Motor Height: 25.8±0.2mm (Included with Encoder housing)

Hollow Shaft(OD): Ф12-0.008/-0.012 mm

Hollow Shaft(ID): Ф8.6+0.05/0 mm

Wire Length: 610±3mm

Cable AWG: #24

Motor Weight: 72±0.2g

Wire plug: 2.5mm dupont connector

No-load current: 0.17±0.05 A

No-load volts: 16V

No-load Rpm: 2149~2375 RPM

Load current: 1A

Load volts: 12V

Load torque(g·cm): 600-1000

Motor internal resistance: 5.6Ω±5%（Resistance varies with temperature）

High voltage test: DC500V 1mA @2sec

Rotor housing runout: ≤0.1mm

Steering (axle extension): clockwise

High-low temperature test: 

High temperature: Keep at 60℃ for 100 hours, and the motor can work normally after 24 hours at room temperature

Low temperature: Keep at -20℃ for 100 hours, and the motor can work normally after 24 hours at room temperature

Maximum power: ≤25W

Working current: 2-3S

Working temperature: -20~60℃;10~90%RH

Packing List

1 x iPower GM3506 Gimbal Motor

1 x  AS5048A Encoder with aluminum case