Active real-time hybrid model test method for offshore floating fan

The invention discloses an active real-time hybrid model test method for an offshore floating fan, and belongs to the technical field of offshore wind power generation. The method comprises the following steps of: establishing a state space model of time domain motion of a floating fan foundation; establishing a state space model of an anchor chain unit; based on the two state space models, establishing a response state space model of the basic coupling motion of the floating fan; establishing an actuating mechanism motion control equation for describing the conversion relation between the motion state of the floating fan foundation and the motion of a multi-degree-of-freedom robot; adopting the multi-degree-of-freedom robot to track movement at the section of the tower foundation of the fan in real time; designing a profiling fan model; performing a wind tunnel test, measuring a load borne by the profiling fan model, and inputting the load into the response state space model; and carrying out real-time measu