针对汽车制动器系统可能存在不完整信息或冲突信息的情形，提出了一种基于 证据理论的盘式制动器稳定性研究方法． 该方法将参数不确定性分析引入制动器系统的 稳定性研究中，采用证据变量对系统不确定性参数的不完整信息或冲突信息进行整合，并 对系统参数的大不确定区间信息进行处理; 建立了基于证据理论的不确定汽车盘式制动 器系统的稳定性分析模型，采用关于系统复特征值阻尼比的信任函数和似真函数对系统 的稳定性进行不确定性度量和评估，并给出了方法的具体研究步骤; 通过分析不确定性条 件下系统稳定性达到设计要求的概率区间，研究了各不确定参数对系统稳定性的影响． 研 究方法对抑制汽车制动噪声具有一定的工程指导意义．

An evidence theory-based approach for the stability analysis of disc brakes was proposed to deal with the incomplete or conflicting information which may exist in automotive brake systems． In the proposed approach，parametric uncertainty was taken into account for the stability analysis of a disc brake． The evidence variables were employed to deal with the uncertain parameters whose information was incomplete or even conflicting，and the uncertain parameters with large intervals． Subsequently，the stability analysis model of uncertain disc brake system was established based on evidence theory，and the belief function and plausibility function related to the negative damping ratio of system unstable eigenvalue were used to evaluate system stability． Meanwhile，the detailed procedure of the proposed approach was presented． Finally，the influence of uncertain system parameters on brake stability was explored，based on the probability interval analysis of system stability meeting design requirement． The proposed approach has potential guidance and application in the field of automotive brake noise control．