Three-degree-of-freedom helicopter fault-tolerant control device and method based on support vector machine

Abstract

The invention relates to a three-freedom helicopter fault tolerance control device based on a support vector machine and a method thereof, which belongs to an aircraft fault tolerance control field. The fault tolerance control device comprises five parts: an interference and fault injection device, a helicopter system platform, a power amplifier, a data acquiring card and a computer fault diagnosing device. The three-freedom helicopter fault tolerance control device is based on a generated gesture ring non-linear mathematical model. A PD controller, a support vector machine self-adaptive fault tolerance controller and a dynamic inverse controller are adopted for settling multiple system failures and a fault tolerance under multiple interferences. The three-freedom helicopter fault tolerance control device has advantages of high operability and easy realization. The three-freedom helicopter fault tolerance control device can be used in checking test for actuator faults of a three-freedom helicopter.

Description

Technical field [0001] The invention relates to a three-degree-of-freedom helicopter fault-tolerant control device and method based on a support vector machine, belonging to the field of aircraft fault-tolerant control. Background technique [0002] The development of aviation helicopters has received extensive attention from the society in recent years. It is related to national security and the ability to develop and utilize space, and has received great investment from countries all over the world. Due to the complexity of the helicopter's structure and the uncertainty of the environment, various faults are prone to occur during operation, and the traditional PID control system has weak fault tolerance for actuator failure, jamming, damage and other faults. Normally it does not work normally when it occurs. In order to ensure the emergency handling capability of the system, to ensure that the system can operate safely after a failure, and continue to work within the acceptabl...

AI Technical Summary

Problems solved by technology

[0004] In order to test the reliability and fault monitoring capabilities of the helicopter control system, and to achieve fault damage analysis and fault-tolerant system design, hardware redundancy is usually used to improve the reliability of the system in the face of faults, but the system cost, aircraft quality and operational complexity All have increased; and analytical redundancy uses mathematical tools to design advanced control methods, monitor system status and flight errors, and estimate the location, time, and size of faults, and tap the redundancy of the aircraft itself to design fault-tolerant control laws. Does not increase additional cost and complexity, but the specific implementation devices and methods of this technology are rarely described in existing literature

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