Wave compensation gangway ladder device for marine personnel transfer operation and control method

The invention relates to a wave compensation gangway ladder device for marine personnel transfer operation. A supporting universal joint is arranged between the middle of the top face of a base plateof the wave compensation gangway ladder device and the middle of the bottom of a door seat, a first compensation hydraulic cylinder and a second compensation hydraulic cylinder are arranged between the base plate and the door seat, and a lower flange is fixed to the top of the door seat. An upper flange is fixed to the bottom face of a main frame part, a rotating disc gear is coaxially fixed on the upper flange, the rotating disc gear is connected with the lower flange through a bearing, a motor is installed on the door seat, a rotating shaft of the motor is provided with a driving gear, and the driving gear meshes with the rotating disc gear. A transfer deck is arranged on the upper portion of the main frame part. The transfer deck is connected with the bottom of the fixed end of a telescopic gangway ladder, and