Introduction to mechanical flies, introduction to robot flies

The mechanical fly is a biomimetic product that weighs only 60 milligrams and has a wingspan of only 3 centimeters. The principle of its flight motion is very similar to that of a real fly. At Harvard University, the mechanical fly completed its first flight.

Its wings are made of carbon fiber, are about 15 mm long, and can flapp back and forth 120 times per second, like an actual insect flapping its wings back and forth. The mechanical fly takes off in a straight line along a trajectory set by wires, and this is the first insect-sized robot to be able to fly.

Weighing only 60 milligrams and with a wingspan of only three centimeters, the robot fly is a typical biomimetic product, and its flight movement principle is very similar to that of a real fly, and it completed its first flight at Harvard University.

When roboticists first see their work begin to move and take on "life", there is no other moment more valuable than at this time. And Robert Wood, just a year ago at this time, when Robert Wood's first artificial wings spread their wings and flew, this paternal pride came.

It all started when Robert Wood was sticking to a thin-wing robot, which uses two taut wires. Next, Robert Wood plugged in the external power supply. Using a few milliseconds of carbon fiber as a wing, which is about 15 mm long, it can flapp back and forth 120 times per second, like an actual insect flapping its wings back and forth.

The fly robot takes off in a straight line along a track set by wires. As far as Robert Wood knows, this is the first insect-sized robot capable of flying.

The lightweight "fly robot" can fly in a narrow space, which can not only be competent for disaster relief, but also act as an anti-terrorist robot, and can also accurately hit enemy vital points.

The experiment took almost a decade. He started out with his mentor at the University of California, Berkeley, Professor of Electrical Engineering, Ronald Sfearing does research in the lab.

Later, Robert Wood took it to Robert Wood's lab at Harvard. Robert Wood and his colleagues hope that this small flying robot will herald a new era of practical small-scale robot design.

Robert Wood and Robert Wood's colleagues at Harvard's Microrobotics Lab are working on insect-like robots, primarily to demonstrate their rescue and reconnaissance capabilities. Once they have the right sensors, flight controllers, and batteries installed, they can be put into use from outside the lab. It can quickly jump over obstacles and places that people can't reach.

For example, when the earth's crust cracks and the house collapses, rescuers must walk through the rubble-laden streets in a frantic search for survivors, all while breathing air filled with toxic particles. But they had to do it on their own, because Robert Wood and his colleagues' experienced rescue robots often fail and could fail at the slightest clutter.

Robert Wood and his colleagues had a special approach to having first responders disperse flying robots the size of thousands of paper clips throughout the disaster area. Tiny machines can detect signs of life, perhaps by detecting the carbon dioxide exhaled by survivors, or by detecting their body temperature. While some flies may break the glass of the window or get stuck in the corner, others can escape through cracks and collapsed beams.

Maybe it's just a group of three, but use their own way to find survivors, and whenever they do, they wait in place and use their remaining energy to relay their findings to rescuers. They use radio to convert to low narrowband bands, which are then transmitted to a pre-arranged receiving network. So even if 99% of the robot flies themselves are not found, the search mission is still successful.

Designing an insect robot is much more complicated than making a model of an airplane, but for aerodynamic reasons, the model of an insect is not the same. In 1999, Michael Dickinson (a biologist at the University of California, Berkeley, now at the California Institute of Technology) used a 25-centimeter-sized fly-like wing to simulate air viscosity by immersing it in mineral oil, confirming for the first time the basic aerological principles of insect flight in different modes of air flow. The results show that insects use three different wing movements to create and control the air vortex that is required to generate a lifting force.

Using the results of Michael Dickinson's pattern analysis, Robert Wood and others began mimicking the incredible wing movements of insects in fearing's lab. Part of the challenge comes from the many systems that help flies fly, including the eyes (in particular, that coordinate their perceptual movements) and the powerful muscles that generate unsteady aerodynamic forces to drive the wings. Many insects control their wings by adjusting the amplitude of their wings, the angle of flight, and the contraction of their abdomen.

Flies have special sensory organs called halteres, which can sense the rotation of their bodies when flying. This property is the key to its ability to hover in the air, fly up and down, and attach to walls and even ceilings.

The main purpose of making mobile robots is that they can reach places that humans can't see, such as uncovered areas on the battlefield. Now, it's mostly the military that uses the robots, as they are priced at $100,000 each. Updating is needed to bring him to the point where he has the force of law and can be used in emergency rescue services.

Robert Wood and his colleagues are very focused on the selection of materials, both the right fit and the right fit for the job. Because the robot envisioned for Robert Wood and his colleagues costs less than $10, durability is relatively secondary.

Robert Wood and his colleagues focused on two-winged insects such as houseflies, aphids, and fruit flies. Flies are one of the most capable flying species on the planet, and although they are small, they are naturally healthy and strong, and they can withstand all kinds of strong impacts when flying.

Flies move their wings with their amazing mobility and through complex three-dimensional trajectory frequencies that often exceed 100 Hz. The upshoot and downshoot modes are almost symmetrical when hovering, but extremely asymmetrical during take-off or forward. Flies produce huge amplitudes and high-frequency flapping of their wings by using indirect flight muscles.

This is because they change parts of their chest, not their own wings. It creates a resonance on the body of the fly. The smaller muscles are connected directly to the wing nerves to coordinate the movement of the wings.