[Iron and Blood open platform] quad-axis team

Ouyang Guosheng Introduction

Love all kinds of hardware DIY,
Project and hardware development experience:
AutoCAD and 3DS MAX: proficient in using AutoCAD to design the Airwing, 3 DSMAX modeling, and the "Kuafu" solar wing of the cup.
51 Single-Chip Microcomputer: 51 Development Board realizes automatic stability of airplane model.
AVR and Arduino: They love aerial models and have been developing various types of aerial model applications for two years. They are self-taught robots for automatic control and pose control.
Its four-axis team used ardupilot mega Development Board to develop aerial drones and aerial robots.

He is now the president of the 1015 aerospace enthusiasts Association North Court

And technical guidance from the Information Science Association

Core R & D team Profile

 

The solar power system is the pioneer in energy, and our "4-axis" team is the leader in the community of New drones. Our nanli 1015 students worked tirelessly to form a team and study hard. After one year of theoretical knowledge accumulation and practical tests, we achieved great success. This year is China's four-axis first year. At the end of the year, we were lucky enough to catch up with this bus. At present, our self-developed four-axis drone has achieved semi-unmanned flight. It only needs to help it take off and land, automatically control the air, and implement self-driving without remote control.

In the new 2012 S, we will continue to develop fixed-wing, six-axis, and eight-axis drones, which will develop towards practical use and miniaturization of drones.

 

 

Division of core team members

Ouyang Guosheng (Automatic Control System Programming, wireless video and data transmission system development)

Yang Jiahe and Xin kecheng (Flight Control and commissioning)

Ma Zilong (3D modeling, Machine Numerical Control)

Wang yibiao and Huang Zhigang (Body Testing and transformation)

Wu baoah (video recording, post-processing, online promotion)

 

 

 

At present, our research team has reached a high level

 

· Unmanned automatic flight control, including guided flight and self-driving. After the plane is on, don't worry about control. We just need to tell you where you want to go on the ground station. Drones will perform computation and automatically fly to the target. No matter how high or how far it is, the microcontroller will calculate its own orientation and Posture Based on the sensor data, automatic driving! In the past six months, our fixed-wing drones have carried out more than 100 landing and landing tests, proving that automatic flight is reliable and practical. Through further hardware upgrades and programming debugging, drones can implement practical functions such as automatic landing, Air Obstacle avoidance, and airdrops.

· Through wireless video transmission, we can view the scenery on the ground in real time. No matter how high the plane is and how far it is, the ground station notebook can complete remote sensing, which will be very advantageous for disaster search and rescue, aerial photography detection! We have used fixed wing drones for testing aerial photography for the hero campus and the North campus, and the results are very satisfactory. Presumably, after increasing the number of high-definition cameras, they will be mounted on the new four-axis aircraft, and the aerial photography effect will certainly be higher.

 

· The new four-axis drone can take vertical take-off and landing, take-over, hover, rotate, and fly. The drone will automatically adjust the height to adapt to the terrain. As long as the ground station gives a command, the four-axis will automatically hover over based on the GPS and barometer. This is an aerial photograph of the arrow square in the hero campus during hovering.

 

 

· Ground station pointing flight. We can use the ground station program to load Google Maps. In the map, we can determine the three-dimension flight point that we need the drone to reach, and the drone can execute the commands given by the ground station. For the flight points we have tested in the north campus for many times, the drone executes the flight point command to fly around this square.

· All-in-One ground control system. As a ground control station platform, the notebook integrates wireless video signal receiving module, wireless data transmission module, and power management system to implement one-stop single-user Ground Control. At present, due to lack of funds for transformation, the ground station is very simple and inconvenient to take out of school.

· The hardware is developed using the advanced UAV Development Board and general programming language arduno of foreign countries, and compatible with industry-leading robot standards, such as Willow garages's robot operating system and mavlink communication protocol. This ensures that the drones we developed will continue to be at the forefront of aviation robots, from multi-drone clusters to AI Control and the latest Android portable devices. When we need to make a large number of development systems into products, we can quickly convert them from the Development Board to products.

 

 

 

 

 

 

 

 

Development and Prospect of airborne solar energy

 

In response to the weak battery endurance, our research team began to study the parallel power supply between common battery and solar battery. Although the cost is high, it is believed that part of the aircraft's energy use of solar energy to replace fossil fuel has become a major direction. The future development trend is in line with our "Green, innovative" research purposes.

In fact, at present, the four-around aircraft we have studied has a fatal defect-that is, in the case of an unexpected power failure, the battery will inevitably completely follow the bad aircraft. As a result, our group is still ready to use solar cells as the secondary output mode. Solar Power provides power to maintain the hovering of the fuselage, that is, the plane can land slowly from high altitude without the need for ordinary batteries. It can not only ensure the safety of the aircraft, but also greatly enhance the endurance capabilities, so as to achieve the goal of long-term aerial photography.

 

 

Difficulties to be solved

 

1. Control the radius. We have begun to study the ZigBee data transmission method, and transfer the data on the drone back to the ground station for computing, reducing the computing pressure on the drone single-chip microcomputer. At the same time, we can use data transmission devices to directly achieve telemetry and control, remote Control of the flight model. However, I have been hesitant about funding. I have purchased low-cost domestic equipment, and the testing results are often unsatisfactory.

2. Drone endurance. As we all know, the biggest reason why battery cannot replace fossil fuel in motor vehicles for a long time is that battery consumes fast power and is slowly charged. Green, but cannot guarantee the endurance. Solar panels are a good choice, and I am also in the Solar System, which is just a chance for us to study. However, if you consider a series of problems such as mass production in the future, expensive costs are a challenge.

3. Security Issues. The propeller of the aerial model is the safety killer of manipulation errors. The four-axis propeller has a series of problems, such as air power, which cannot be closed up or down.

4. device problems. Due to financial resources, it is impossible to purchase high-pixel cameras and ultrasonic sensors. In fact, our drone technology has reached the technology of a complete drone. We only need an ultrasonic sensor to achieve automatic take-off and landing, that is, the real meaning of a simple drone. In fact, the aircraft we studied in our group is already very stable, that is, flight control is increasing. However, due to funding problems, we are not able to purchase high-performance aerial photography cameras and digital transmission. However, we believe that our aerial photography will fly farther, longer, and clearer in the future!

 

 

Research Development Direction

Energy System Improvement

At the beginning, we were considering how to enhance our endurance. Use low-energy motors and high-efficiency blades to create more efficient power conversion modules, reduce the weight of the fuselage, streamline the UFO, and reduce the contact area between the body and the air to reduce resistance. It improves the efficiency of drone power usage.

Another solution is to adopt sustainable energy, and solar power is the best choice for drones. High altitude, no sunlight, solar panels and aircraft load, so the birth of the Challenge Cup topic to solar long flight aircraft development, and finally won the second prize at the provincial level. Now the technology can be applied directly to drones to develop long-haul drones.

High-performance aerial photography. We have used fixed-wing aircraft for simple aerial photography (with visual screens) for the north campus and heroes. However, due to technical and equipment limitations, the video is still unclear. But we have done our best, and although the picture is not clear enough, it has reached a stable level.

Remote Data Transmission. The reliable data transmission system enables drones with complete functions, that is, taking off and landing independently, and remotely setting the flight height.

 

More stable and reliable self-driving. Improved programming algorithms and added more sensors for inertial navigation. Compared with external navigation like GPS, inertial navigation has a relatively large internal navigation mode error. In the past, the target error of intercontinental missiles could be 500 meters, but recent events gave us a new idea, by exploiting the flaws in the US military drone GPS navigation system, Iran guides a U.S. Q-170's "Sentinel" drone to Iranian territory. GPS signals are often lost during drone flights, which sounds a wake-up alarm and cannot be overly reliant on GPS.

 

 

Security and visual TransformationBy adding culvert channels and other structures to the rotor, the aircraft's wind resistance capability is improved, lift is increased, and collision between the rotor and environmental obstacles can be prevented, thus improving its security and aesthetics.

 

Mechanical Arm. There is no need to introduce the stability of the four axes. If we have a mechanical arm, can we do more? Needless to say, the practice is higher than the theory. We hope you will wait and see!