數(shù)控磨齒機故障診斷與可靠性評估

第 1 章 可靠性建模理論 ·····························································.1
1.1 可靠性建模與可靠性評價 ···············································.1
1.1.1 可靠性建模目的和意義 ·········································.1
1.1.2 可靠性評價函數(shù) ··················································.2
1.1.3 可靠性評價指標 ··················································.4
1.2 可靠性分布模型簡介 ·····················································.5
1.2.1 韋布爾分布模型 ··················································.5
1.2.2 指數(shù)分布模型 ·····················································.7
1.2.3 正態(tài)分布模型 ·····················································.9
1.2.4 對數(shù)正態(tài)分布模型 ···············································10
1.3 可靠性分布模型檢驗方法 ···············································12
1.3.1 統(tǒng)計假設(shè)檢驗 ·····················································12
1.3.2 擬合優(yōu)度檢驗 ·····················································14
1.4 本章小結(jié)····································································16
第 2 章 數(shù)控磨齒機磨削原理························································17
2.1 磨削加工理論 ······························································17
2.1.1 磨削機理 ···························································17
2.1.2 磨削加工 ···························································17
2.1.3 磨削力計算 ························································19
2.2 成形磨齒機磨削原理 ·····················································20
2.2.1 成形磨齒原理 ·····················································20
2.2.2 成形數(shù)控磨齒機結(jié)構(gòu) ············································21
2.3 擺線輪磨削原理 ···························································22
2.3.1 擺線輪齒面形狀 ··················································22
2.3.2 擺線輪嚙合方程 ··················································25
2.3.3 擺線輪磨齒機結(jié)構(gòu) ···············································29
2.3.4 擺線輪磨削機理 ··················································32
2.4 本章小結(jié)····································································33
第 3 章 數(shù)控磨齒機故障綜合分析 ··················································34
3.1 振動信號故障特征提取技術(shù) ············································34
3.1.1 EMD 算法介紹····················································34
3.1.2 實驗數(shù)據(jù)采集 ·····················································37
3.1.3 振動數(shù)據(jù)的處理與分析 ·········································39
3.2 數(shù)控磨齒機故障樹分析（FTA） ·······································42
3.2.1 FTA 基本方法 ·····················································42
3.2.2 數(shù)控磨齒機故障樹的建立 ······································43
3.2.3 數(shù)控磨齒機故障樹定性分析 ···································45
3.3 基于 FTA-AHP 的數(shù)控磨齒機可靠性分析····························48
3.3.1 FTA-AHP···························································48
3.3.2 在數(shù)控磨齒機上應(yīng)用 FTA-AHP ·······························49
3.3.3 故障因素層次總排序分析 ······································53
3.4 本章小結(jié)····································································55
第 4 章 基于 RBF 神經(jīng)網(wǎng)絡(luò)的數(shù)控磨齒機可靠性評估···························56
4.1 RBF 神經(jīng)網(wǎng)絡(luò)簡介························································56
4.1.1 RBF 神經(jīng)網(wǎng)絡(luò)結(jié)構(gòu)介紹·········································56
4.1.2 RBF 神經(jīng)網(wǎng)絡(luò)學(xué)習(xí)算法·········································58
4.2 基于 RBF 神經(jīng)網(wǎng)絡(luò)的擴充算法 ········································60
4.2.1 RBF 神經(jīng)網(wǎng)絡(luò)擴充算法的設(shè)計 ································60
4.2.2 RBF 神經(jīng)網(wǎng)絡(luò)可靠性評估流程 ································61
4.3 實例分析····································································63
4.3.1 原始故障間隔時間分布模型 ···································63
4.3.2 RBF 神經(jīng)網(wǎng)絡(luò)擴充數(shù)據(jù)及分析 ································67
4.3.3 數(shù)控磨齒機可靠性評估 ·········································71
4.4 本章小結(jié)····································································75
第 5 章 基于貝葉斯方法的數(shù)控磨齒機可靠性建模分析 ·························76
5.1 可靠性數(shù)據(jù)的收集 ························································76
5.1.1 可靠性數(shù)據(jù)分類 ··················································76
5.1.2 可靠性數(shù)據(jù)收集方法 ············································77
5.1.3 可靠性數(shù)據(jù)的篩選 ···············································78
5.2 數(shù)控磨齒機先驗信息 ·····················································79
5.2.1 先驗信息預(yù)處理 ··················································79
5.2.2 先驗信息相容性檢驗 ············································79
5.3 數(shù)控磨齒機先驗分布的確定 ·····