The Secret to Stable Footage: Core Differences Between Gimbal Brushless Motors and Ordinary Motors

The Secret to Stable Footage: Core Differences Between Gimbal Brushless Motors and Ordinary Motors

        Why can ordinary motors only provide power, while gimbal motors steadily hold a camera and produce smooth, fluid footage? Many assume it is just a matter of power, but the truth is that the control logic, structural design, and precision requirements follow entirely different technical paths. This article explains the essential differences between gimbal brushless motors and ordinary motors, revealing the truth behind stable imaging.

I. Completely Different Goals: Power vs. Attitude Control

       Ordinary brushless motors (used in FPV drones, models, fans, etc.) pursue high speed, high thrust, and high efficiency. Their goal is fast rotation and power output, with almost no requirement for positional accuracy.

Gimbal motors, by contrast, aim for extremely low speed, ultra-high torque, and precise angle control. Their core task is to cancel out frame vibration and keep the lens level—even slight shaking directly appears in the footage. Simply put, ordinary motors compete on speed, while gimbal motors compete on stability and precision.

II. Structural Design: Torque Density Over Speed

         Gimbal motors generally use an outer-rotor, large-diameter, thin, flat structure that delivers huge holding torque at low speeds with strong anti-disturbance capability. Ordinary motors feature a slim, high-speed design with weak low-speed torque and poor stability.

In addition, the internal magnetic circuit of gimbal motors is specially optimized for minimal cogging torque, resulting in extremely smooth rotation without the jerky motion typical of ordinary motors.

III. Drastically Different Control Methods: Open-Loop vs. Closed-Loop High-Precision Control

        Most ordinary motors use open-loop speed control: they rotate when given a signal, without monitoring exact angles or making fine corrections.

Gimbal brushless motors require high-precision closed-loop control with built-in encoders (magnetic or optical) that detect angles in real time with millisecond-level response. Once frame tilt is detected, the motor instantly applies reverse force for compensation—something ordinary motors cannot do.

IV. Low-Speed Performance and Vibration Control

         Ordinary motors exhibit significant vibration and noise at low speeds and cannot perform fine angle adjustments. Gimbal motors are specially optimized for low-speed smoothness to ensure stable imaging, allowing extremely slow, uniform rotation without jitter or jelly effects.

They also have extremely high requirements for vibration suppression and harmonic control, since any subtle vibration is magnified by the camera. Their standards for winding, magnet assembly, and dynamic balancing are far higher than those for ordinary motors.

V. Durability and Scenario Adaptability

       Gimbal motors must maintain torque and resist inertia for long periods, imposing stricter requirements for heat dissipation, anti-vibration performance, and service life. Ordinary motors focus on continuous high-speed operation, leading to clear differences in materials, bearing grades, and insulation design.

VI. Summary

        Ordinary brushless motors are "power athletes" responsible for flight, rotation, and propulsion. Gimbal brushless motors are "precision control specialists" focused on stability, levelness, and smoothness. These core differences enable aerial photography, handheld gimbals, and cinematic rigs to capture stable, clear footage, making them indispensable core components in imaging systems.