| Citation: | SHI Zhaoyao, CHENG Huiming, YU Zhiyong, et al. Dynamic characteristics of the lost motion of the reducer[J]. Journal of Aerospace Power, 2024, 39（9）：20230541 doi: 10.13224/j.cnki.jasp.20230541
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The dynamic characteristics of lost motion based on transmission errors were explored. By considering the influences of torque, loading rate, and rotational speed, the relationship between lost motion and transmission errors was analytically derived. The dynamic characteristics of lost motion were substantiated, revealing that lost motion can be obtained by subtracting reverse transmission errors. The classification of lost motion was examined, and lost motion was divided into dynamic lost motion, quasi-static lost motion, and static lost motion. The testing methods for lost motion were provided, by which dynamic lost motion can be obtained through bidirectional transmission error analysis, and quasi-static lost motion and static lost motion can be acquired through hysteresis loop analysis. Experimental investigations on lost motion were conducted using examples of small and large reducers, confirming the dynamic characteristics of lost motion. It was observed that dynamic lost motion and quasi-static lost motion exhibited dynamic variations, while static lost motion was kept unaffected by loading rate dependence, aligning with theoretical analyses. In conclusion, the theoretical and engineering values of the research were highlighted.
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