Abstract
According to the special requirements of the redundant input drive system in the aerospace field, a scheme of dual-redundancy transmission system is presented and it meets the requirements that one axis can output movements no matter two input axes are working together or working alone. Based on the analysis of the scheme, structure design scheme is presented, and the matching relationship of gear teeth is derived to meet the requirement of transmission ratio. Then the multidisciplinary design optimization model of the dual-redundancy transmission system is established, in which the system is discomposed into two subsystems: differential gear train and fixed axis gear train. The multidisciplinary variable couple design optimization method of discrete variable is used in the optimal design of dual-redundancy transmission system and the optimal comprehensive scheme is obtained.
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