Fault reason determination method and device

• Main Authors: WU GUOYI, ZHAO ZHIBO, WANG HUIWU
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2021
• Subjects: AIRCRAFT; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT; AVIATION; COSMONAUTICS; EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLYING SUITS; PARACHUTES; PERFORMING OPERATIONS; TRANSPORTING

The invention discloses a fault cause determination method and device. The method comprises the steps that the fusion speed, the GPS speed and the reference speed of the flight equipment are acquired, and the fusion speed is determined based on the GPS speed, course information and the IMU speed; the reference speed is calculated according to a first position of the flight device at a first moment, a second position of the flight device at a second moment in the flight log and the time consumed by the flight device to fly from the first position to the second position; and when the absolute value of the first difference value between the GPS speed and the fusion speed is greater than a first preset threshold value and the absolute value of the second difference value between the GPS speed and the reference speed is greater than a second preset threshold value, determining that the fault is caused by the GPS speed abnormality. According to the method and the device, the technical problem of relatively low conf