关键词: 悬架选型；性能目标；底盘性能数据库；底盘开发

Abstract: At the early stage of chassis development, a specific suspension type needs to be identified and performance targets set. On the one hand, the developer needs to have a deep understanding of the characteristics and applicability of various suspension types, and on the other hand, the performance targets need to refer to a large number of similar vehicle data, which is a certain engineering difficulty. To solve this problem, a chassis performance database is designed and developed. The database is queried through complex search conditions to find the target model, and the target parameters are queried according to the test conditions and test conditions, and statistical analysis is used to obtain the characteristics of the parameter distribution of the reference model and statistical characteristics such as mean and variance, and the mean±n*variance is used to establish the target range of parameter indicators. The results show that the range of indicators is in line with the vehicle dynamics design theory. After the specific design scheme is further verified by the performance of understeer and lateral gradient, the subsequent detailed design development can be carried out, which has good engineering application value.

Key words: Suspension type; Performance target; Performance database