A drone gimbal controls the camera's pointing direction and reduces the effects of changes in aircraft attitude and airframe vibration during flight. Selecting a suitable gimbal requires consideration of the UAV type, camera weight, filming requirements, stabilization accuracy, and budget.
Common gimbal configurations include single-axis, 2-axis, and 3-axis designs. Gimbals can also be classified according to their installation and integration methods, including factory-integrated gimbals and independently mounted payload gimbals. These designs differ in stabilization performance, weight, cost, and equipment compatibility. The number of axes alone does not determine which gimbal is best.
Choosing a Gimbal by the Number of Motion Axes
The number of controlled motion axes determines which directions of camera attitude changes a gimbal can actively compensate for. The three common configurations are described below.
3-Axis Gimbals
A 3-axis gimbal typically consists of pitch, roll, and yaw axes. These axes independently control camera rotation in three directions.
Pitch axis: Controls upward and downward camera movement to adjust the shooting angle.
Roll axis: Compensates for sideways camera tilt and helps keep the image level.
Yaw axis: Controls the horizontal pointing direction and reduces the effect of UAV heading changes on camera orientation.
The three axes work together to compensate for aircraft attitude changes during flight. This configuration is suitable for aerial landscape photography, video recording, dynamic tracking, and other tasks requiring stable images.
However, a 3-axis gimbal has a more complex structure. It requires additional motors, sensors, and control mechanisms, which generally increase its weight, manufacturing cost, and maintenance requirements.
2-Axis Gimbals
A 2-axis gimbal uses two motion axes to stabilize the camera. A common configuration uses pitch and roll axes, although other axis combinations are available depending on the equipment design.
This configuration can meet the requirements of basic aerial photography and image acquisition tasks. With fewer motion axes and associated drive components, 2-axis gimbals generally have lower weight, simpler mechanical structures, and lower manufacturing costs.
Their main limitation is the absence of an independently controlled stabilization axis. When the UAV experiences significant attitude changes along that direction, the gimbal cannot provide the same level of active compensation as a 3-axis design. This may cause image tilt or pointing deviations.
Single-Axis Gimbals
A single-axis gimbal controls movement along only one direction. A common configuration uses the pitch axis to adjust the camera's shooting angle.
Its simple structure and low weight make it suitable for fixed-direction observation, basic image recording, and equipment with strict weight limitations. However, its ability to compensate for attitude changes is limited to one axis, making it unsuitable for aerial photography tasks requiring stabilization in multiple directions.
Choosing a Gimbal by Its Integration with the UAV
In addition to the number of motion axes, the gimbal's mounting method and control arrangement also affect equipment selection.
Factory-Integrated Gimbals
Factory-integrated gimbals are designed together with the UAV airframe, flight control system, and image transmission system. Some consumer drones from DJI, for example, use integrated 3-axis mechanical gimbals.
Their main characteristics include:
Good compatibility: The gimbal's mechanical structure, power supply, and control system are designed to work with the UAV.
Convenient operation: Camera angle adjustments and gimbal functions can be controlled through the manufacturer's remote controller and software.
High integration: The camera, gimbal, and image processing system are generally configured as a single unit.
The main limitation is that the camera and gimbal usually have an integrated design, leaving limited options for replacing the camera or lens and upgrading the mechanical structure. Repairs and component replacements must also take the manufacturer's design and interfaces into account.
Independently Mounted Payload Gimbals
Some industrial UAVs use independently mounted electro-optical pods or camera payloads connected to the aircraft through mounting brackets and dedicated interfaces. This arrangement allows different visible-light cameras, infrared thermal imaging devices, and other sensors to be configured according to mission requirements.
The main characteristics include:
Flexible configuration: Different cameras and sensors can be selected according to the application.
Broader platform compatibility: Suitable mounting interfaces can be designed to accommodate different UAV platforms.
Easier functional expansion: Some payload systems allow sensor replacement or equipment reconfiguration.
However, independent mounting does not mean that every gimbal is universally compatible. The mounting dimensions, payload capacity, power supply specifications, communication interfaces, and control protocols must all be checked.
Key Performance Specifications for Drone Gimbal Selection
After determining the gimbal type, check its technical specifications to ensure compatibility with the camera and UAV.
Stabilization Accuracy
Stabilization accuracy describes the gimbal's ability to maintain a stable camera pointing direction under external disturbances. Evaluation generally involves angular error, angular vibration range, and actual test conditions.
A 3-axis gimbal can compensate for attitude changes along three controlled axes, but this does not mean that all 3-axis products offer the same stabilization accuracy. Some high-performance gimbals specify an angular vibration range within ±0.01°. Actual values should be verified against the product specifications.
Payload Capacity
The gimbal must support the combined weight of the camera, lens, and other accessories. The camera's center of gravity and mounting position must also be considered.
Comparing camera weight with the gimbal's rated payload capacity alone is insufficient. The center of gravity must remain within the permitted mounting range. For industrial UAVs, the combined weight of the gimbal and camera must also remain within the aircraft's available payload capacity.
Control Functions
Gimbal control functions vary by product. Common features include:
Attitude control: Adjusts the camera's pitch, yaw, and roll angles.
Target tracking: Works with image recognition systems to continuously adjust the camera's pointing direction.
Time-lapse photography: Captures images according to preset motion paths and shooting intervals.
Remote operation: Allows operators to adjust gimbal angles and operating modes through a ground control terminal.
Available functions depend on the gimbal control system and associated software.
Mounting Dimensions and Compatibility
In addition to payload and motion performance, check the gimbal's overall dimensions, mounting holes, connection methods, and electrical interfaces.
For independently mounted gimbals, confirm compatibility with the UAV's mechanical mounting interface, power supply, and data communication protocols. Custom mounting brackets and connecting components may also be required according to the aircraft structure.
Common Drone Gimbal Brands and Product Options
When comparing brands, distinguish between factory-integrated gimbals for consumer drones and independently mounted payload systems for industrial UAVs. Handheld camera stabilizers should not be treated as universal drone gimbals.
DJI
DJI offers a broad range of consumer and professional drone products. Some models integrate cameras, 3-axis mechanical gimbals, and flight control systems into a single platform. The Mavic 3 series and Mini 3 Pro, for example, both use 3-axis mechanical gimbals. They are designed for aerial photography and image acquisition on their respective UAV platforms.
Autel Robotics
Autel Robotics offers integrated camera and gimbal systems in its EVO series. The EVO II 8K version, for example, supports 8K video recording and uses a 3-axis gimbal stabilization system. When selecting a model, check its image resolution, stabilization performance, and compatibility with the corresponding UAV platform.
ZHIYUN
ZHIYUN mainly offers handheld stabilizers for cameras and video equipment. The WEEBILL 2, for example, is a 3-axis handheld camera stabilizer designed for compatible DSLR and mirrorless camera setups. It is not a universal UAV payload gimbal.
Similarly, DJI's Ronin series is primarily designed for ground-based photography and video equipment. Buyers should distinguish handheld camera stabilizers from independently mounted gimbals designed for UAV installation.
Gimbal Selection Recommendations for Different Applications
General aerial photography and travel: A factory-integrated 3-axis gimbal is a practical choice. It does not require additional mounting structure design and generally offers convenient operation and good system compatibility.
Lightweight UAVs and basic image acquisition: A 2-axis or single-axis design may be considered when the filming requirements are simple and equipment weight and cost are important factors.
Professional aerial photography and moving target tracking: Pay particular attention to 3-axis stabilization, target tracking functions, and image transmission performance.
Industrial inspection and multi-sensor applications: An independently mounted payload gimbal may be more suitable. Its payload capacity, camera configuration, infrared sensor compatibility, and communication interfaces should be checked against the UAV specifications.
Overall, 3-axis gimbals support a wider range of filming tasks, but they are not necessarily the best choice for every UAV. For general aerial photography, factory-integrated 3-axis gimbals offer convenient operation. For industrial applications, payload capacity, mounting interfaces, and sensor configuration require closer evaluation.
Custom Machining of Precision Parts for Drone Gimbals
Drone gimbals contain motor mounting bases, shaft brackets, camera mounting bases, connecting plates, and other precision mechanical components. Their machining dimensions and accuracy requirements depend on the gimbal design, mounting interfaces, and assembly specifications. Hansheng Automation provides custom precision machining based on customer drawings and accepts both single-piece and small-batch orders.
Our machining services also cover precision components for yachts and RC racing cars, as well as parts for tobacco packaging machinery and filling equipment. Components are manufactured according to the structural requirements and drawings provided for each project.
