机床结构模态分析与优化设计软件ＭＡＯＤ使机床结构动态特性的分析及其 优化可以在微型机上完成。该软件以实际测量的激励和响应信号为输入信号。主要模块 包括：结构模态参数识别、复模态动画显示、动特性灵敏度分析、结构修改的模拟和结 构参数的优化等。文中简述了各主要功能模块的理论依据，给出了 ＭＡＯＤ软件应用于 框架结构和两台加工中心机床上的实例。 The modal analysis and optimization design software MAOD of the machine tool enables the analysis and optimization of the machine tool structure dynamics to be completed on a microcomputer. The software takes the actual measured excitation and response signals as input signals. The main modules include structural modal parameter identification, complex modal animation display, dynamic characteristic sensitivity analysis, structural modification simulation, and structural parameter optimization. This paper briefly describes the theoretical basis of each major functional module, and gives an example of MAOD software applied to the frame structure and two machining centers.