State Key Laboratory of Mechanical Transmissions Chongqing University Chongqing 400044 China;
State Key Laboratory of Mechanical Transmissions Chongqing University Chongqing 400044 China;
State Key Laboratory of Mechanical Transmissions Chongqing University Chongqing 400044 China;
State Key Laboratory of Mechanical Transmissions Chongqing University Chongqing 400044 China;
School of Mechatronic Engineering Southwest Petroleum University Chengdu 610500 ChinaI;
gear transmission; fatigue reliability; reliabi-lity sensitivity; parameter optimization;