Multi-body mechanical system parameter identification method, system and equipment

The invention discloses a multi-body mechanical system parameter identification method, system and equipment. The method comprises the following steps: constructing a kinetic equation of a multi-body system; collecting measurement response data of the multi-body system, and performing response calculation in combination with the kinetic equation to obtain calculation response data; constructing a least square objective function according to the calculation response data and the measurement response data; and linearizing the least square objective function, solving an optimal solution meeting the minimum value of the least square objective function based on a response sensitivity algorithm, and determining system parameters of the multi-body system. The system comprises a preprocessing module, a response data calculation module, a target function construction module and a system parameter determination module. The device comprises a memory and a processor used for executing the multi-body mechanical system par