Aiming at the problem that the multi-objective evaluation of performance and the weighting coefficients of indexes is difficult to find, a fuzzy comprehensive performance evaluation method of rolling linear guide (RLG) is proposed. Considering the static and dynamic indexes, a structure model containing nine weighting coefficients was constructed. The performance evaluation function was established by the compromise programming method and the average power method, while weighting coefficients were determined by the improved analytic hierarchy process (I-AHP); the mathematical model was obtained to evaluate the RLG in a certain application. The evaluation results show that the confidence of the static, dynamic and comprehensive performance of the RLG is 59.21 %, 81.97 %, and 63.34 %, respectively. The feasibility of the method was verified by numerical simulation. This method indicates the pros and cons of the performance of the RLG and also indicates the direction for its optimized design.

针对难以对性能和指标权重系数进行多目标评价的问题，提出了一种滚动直线导轨（RLG）的模糊综合性能评价方法。考虑静态和动态指标，构造了包含九个加权系数的结构模型。通过折衷规划法和平均功率法建立了性能评估函数，而权重系数则由改进的层次分析法确定。建立了数学模型，对某应用中的RLG进行了评估。评估结果表明，RLG静态，动态和综合性能的置信度分别为59.21％，81.97％和63.34％。通过数值模拟验证了该方法的可行性。这种方法表明了RLG性能的优缺点，也表明了其优化设计的方向。