A multidisciplinary integrated modeling and optimization method for an automotive electro-hydraulic composite steering system. The method comprises: establishing, on the basis of AMEsim software, a multidisciplinary simulation model of an automotive electro-hydraulic composite steering system; establishing, on the basis of matlab software, a dynamic optimization model of the automotive electro-hydraulic composite steering system; and establishing, on the basis of isight software, a multidisciplinary integrated optimization model of the automotive electro-hydraulic composite steering system. The established multidisciplinary integrated model is employed to optimize the automotive electro-hydraulic composite steering system, integrates advantages of multiple software platforms, facilitates the simplification and efficiency of parameter optimization design of the electro-hydraulic composite steering system, and improves the accuracy and efficiency of development and design.
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