As drone tech evolves, so do their capabilities. When designing commercial drones and attachments, linear servos are a great way to add functionality while limiting cost. Compact linear servos bring a level of control to drone systems that make tasks like retracting landing gear, stabilizing cameras, and releasing payloads more efficient and effective. Let’s dive into some of the ways linear servos can enhance commercial and hobbyist drone performance.
What Are Linear Servos and How Do They Work?
Let’s take a minute to look at what linear servos are, and how they work. Traditional rotary servos have a rotating shaft, often with a horn mounted on the end to which the load is mounted. The disadvantage with these is that they create rotary motion, whereas many applications require linear motion. Linear servos solve this problem by creating linear motion — meaning they push or pull along a straight path. A typical linear servo is made up of a motor, a gearbox, and a linear actuator that converts rotational motion into straight-line motion.
Why Do Drones Need Linear Servos?
Well, they provide precise and reliable control, which is essential for a variety of drone applications. They’re small, powerful, and capable of handling a variety of tasks with accuracy. Let’s take a closer look at how linear servos are being used to enhance drone performance.
1. Retractable Landing Gear
There are a number of reasons for retracting the landing gear on a drone. Sightlines for cameras and other equipment and reducing aerodynamic drag are a couple of examples. Another reason to use retracting gear is aesthetics - some operators think their drones just look better with the gear up. No matter what the reason, Actuonix linear servos have the power, speed, and reliability to get your gear up and down safely, every time.
2. Gimbals for Cameras and Imaging Equipment
For drones used in aerial photography, videography, or surveillance, keeping the camera stable is critical. Whether it’s for capturing stunning footage or ensuring accurate data collection, a gimbal system is essential to reduce the effects of drone vibrations and wind. While some gimbals come fully ready to run, home-built and custom solutions may require additional equipment. The integration of linear servos with gyro sensors allows these gimbals to respond instantly to the drone's movements, keeping the camera steady even in challenging conditions.
3. Load Release Mechanisms: Precision Control for Payloads
Drones are being used for a variety of tasks that require them to carry and release payloads with precision. Whether it’s delivering packages, dropping supplies for emergency situations, or transporting materials for industrial applications, the ability to release payloads safely and accurately is a must. Linear servos offer the exact precision needed for load release mechanisms. By controlling the movement of a release mechanism with linear actuators, drones can drop their payloads at the right time, in the right place. This is especially crucial in fields like search-and-rescue, agriculture, or military applications, where precise payload delivery can be a matter of life and death.
The image below shows an Actuonix linear servo powering the load release mechanism on a drone designed by students at the University of British Columbia. This mechanism is designed to drop a football.
4. Other Applications: Unlimited Potential
As we find new ways to utilize drone technology, linear servos will continue to play a key role in design. Beyond retractable landing gear, gimbals, and payload release, there are many other ways linear servos can enhance a drone’s functionality. These small, powerful actuators can be used for a wide range of tasks, making drones more adaptable and capable of tackling complex operations.
Deploying and Retrieving Surveying Equipment
Drone Arm Extensions and Tools
Pest Control
Drones are often used for environmental monitoring, surveying, and inspection tasks. Linear servos allow drones to deploy and retrieve specialized equipment like soil sensors, environmental monitors, or cameras with pinpoint accuracy. This is especially useful for tasks that require the drone to reach difficult-to-access areas.
In some cases, drones may need to interact with their environment, whether it's picking up objects, manipulating tools, or extending arms for specific functions. Linear servos can provide the precise control needed for these tasks, whether it’s for cutting, lifting, or even assembling objects in the field.
Drones are now being effectively used in pest control applications. Linear servos can guide and actuate cutting and spraying tools to help eradicate wasps, hornets, and other pests safely.
Conclusion
Linear servos play an important role in drone functionality. The ability to plug directly into a standard receiver makes integrating Actuonix linear servos into your drone design both simple and cost-effective.
If you’re looking to integrate linear servos into your drone system, or if you want to explore the possibilities for your specific application, feel free to reach out to us. Our team of experts is here to help you choose the right components for your needs. We do have development and educational discounts available as well as product sponsorships. If you’re interested in exploring how linear servos can add value to your design, reach out to us and let’s talk about your project.
Common Questions About Drone Servos
Why use linear servos in drones?
Linear servos provide precise control, compact design, and versatility, making them ideal for various drone applications like landing gear, gimbals, and payload release systems.
Can linear servos handle outdoor conditions?
Yes, many linear servos are designed to withstand outdoor conditions, including varying temperatures and exposure to elements, ensuring reliable performance in drone applications.
Are Actuonix servos compatible with standard receivers?
Yes, Actuonix linear servos are designed to plug directly into standard receivers, making integration simple and cost-effective.
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