Autonomous return system and control method of dual-rotor remote-controlled model helicopter

Abstract

The invention relates to an autonomous return system and a control method of a dual-rotor remote-controlled model helicopter, belonging to the technical field of autonomous return of a remote-controlled model (unmanned) helicopter. The system comprises an airborne part and a ground control station part; the airborne part comprises a main rotor motor, a tail rotor motor, a single-polarity PWM (pulse-width modulation) output drive circuit, an H-bridge direct current motor drive circuit, a micro controller, an MEMS (micro-electromechanical system) single-axis gyroscope, an MEMS dual-axis gyroscope, an MEMS tri-axis accelerometer, a signal conditioning circuit, a resetting circuit, a small voltage difference linear voltage stabilizer, a JTAG (joint test action group) interface, a wireless data transmission module and a power supply, and the ground control station part is formed by sequentially connecting a ground station computer and a ground wireless data transmission module. According to the autonomous return system and the control method, the model helicopter can autonomously return to the remote-controlled range after the model helicopter flies off the remote-controlled range, and the stability of flight of the helicopter can be improved.

Description

technical field [0001] The invention relates to an autonomous return system and a control method of a twin-rotor remote control model helicopter, belonging to the technical field of autonomous return of a remote control model (unmanned) helicopter. Background technique [0002] The working principle of the remote control model helicopters on the market is roughly: when the airborne circuit board receives the remote control signal, it directly converts the remote control signal into the control signal of the DC speed motor or steering gear corresponding to the model helicopter, so as to control the model helicopter. flight. Just there are two problems when such model helicopter works. [0003] 1. Compared with fixed-wing aircraft, helicopters have more complex aerodynamic characteristics, and the dynamic characteristics are unstable, and there is strong inter-axis coupling between channels, while the flight control system of model helicopters is an open-loop system, so man...

AI Technical Summary

Problems solved by technology

[0003] 1. Compared with fixed-wing aircraft, the aerodynamic characteristics of helicopters are more complicated, and the dynamic characteristics are unstable, and there is strong inter-axis coupling between each channel. The flight control system of model helicopters is an open-loop system, so manual driving is very difficult, and it is generally operated by professional model aircraft pilots.

[0004]Second, when the remote control model helicopter flies out of the remote control range, it is in an uncontrollable state, resulting in a crash and economic losses

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