运用人工智能(AI)理论和知识工程技术,使传统的设备故障诊断系统成为基于深知识的知识中心型专家系统。它与机械设计专家系统利用同样的对象模型及其阶层构造和性能框架,在进行设计推理,探索最优设计方案的同时,从深知识推导出诊断故障所需的因果关系,寻找设备的故障及其原因所在,从而使原本各自独立存在、独立运行的两类专家系统融成一体,形成故障诊断,机械设计综合专家系统

6.1 The Magnitude-Phase Representation （ 幅度-相位） of the Fourier Transform

提出了一种将滚动体模拟成非线性弹性支承的新方法。它考虑了轴承系统的变形。当轴承座较薄弱时,压力常呈双峰分布

4.1 Representation of Aperiodic Signals :The Continuous-Time Fourier Transform

1. Continuous-time system 2. Discrete-time system

2.1 Discrete-time LTI Systems : The Convolution Sum （卷积和） 2.1.1 The Representation of Discrete-Time Signals in Terms of impulses

1. is absolutely summable, 2. has finite energy

Chapter 1 Signals and Systems (1) A simple RC circuit Source voltage Vs and Capacitor voltage Vc (2) An automobile

9.1 The Laplace Transform 1. The relationship 2. Region of Convergence（收敛域）

Let be a band-limited signal with then is uniquely determined by its samples if where