1 results about "Robin boundary condition" patented technology

The application discloses a kind of based on multi-source heterogeneous data fusion and boundary self-adapting three-dimensional temperature field soft measurement method and system, method includes: obtaining infrared time series temperature field data and discrete thermocouple time series temperature data;Establish three-dimensional tetrahedral finite element grid model, and the solution domain is divided into the sub-region with independent thermal physical property parameters;Adaptive Robin boundary condition with virtual control gain is constructed, and the initial value of global three-dimensional simulation temperature field of current time step is obtained;Based on the pre-constructed spatial hierarchical index structure, the corresponding simulation temperature value at the position of discrete thermocouple is extracted;Temperature residual is calculated, and the equivalent thermal diffusivity of each sub-region is independently updated using asymmetric parameter identification law;The updated equivalent thermal diffusivity is fed back to the next iteration round, and when the set convergence condition is reached, the measured object three-dimensional transient temperature field and the identified thermal physical property parameters are output.The application improves the numerical stability of multi-source data assimilation solution.