Open Access
Appendix A
Some constants in dynamics model for gear transmission system.
| Parameter | Motor/1st gear | 1st/2nd gear | 2nd/3rd gear | 3rd/4th gear | 4th/5th gear | 5th/6th gear | 6th/7th gear | 7th/1st sun gear | 1st sun/planetary | 1stplanetary/ring | 1stplanetary/carrier | 1stcarrier/2ndsun | 2nd sun/planetary | 2nd planetary/ring | 2nd planetary/carrier | 2nd carrier/drum |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mesh stiffness/(N/m) | 7.3e8 | 7.5e8 | 8.9e8 | 9e8 | 9.3e8 | 5.9e8 | 6.8e8 | 8.9e8 | 1.1e9 | |||||||
| Shaft bending stiffness/(N/m) | 5.15e8 | 3.3e9 | 2.1e9 | 2.5e9 | 1.5e10 | |||||||||||
| Shaft torsion stiffness/(N/m) | 8e6 | 7.8e8 | 2.05e8 | 6e8 | 4e9 | |||||||||||
| Bearing stiffness/(N/m) | 1.44e9/1.44e9 | 1.44e9/1.51e9 | 1.51e9/1.51e9 | 1.51e9/3.5e9 | 3.5e9/3.5e9 | 3.5e9/1.46e9 | 1.46e9/ | /1.12e9 | 1.12e9/5.23e10 | /3.12e10 | 2.34e9/6.78e10 | |||||
| Mass/kg | 23.7/45.2 | 45.2/47.5 | 47.5/43.2 | 43.2/67.7 | 67.7 | 67.7/92.7 | 92.7/7.56 | 7.56/19.4 | 19.4/30.1 | 19.4/35.5 | 35.5/26.5 | 26.5/42.3 | 42.3/45.2 | 42.3/142.5 | 142.5/3500 | |
| Moment of inertia/(kg.m2) | 0.16/0.58 | 0.58/0.64 | 0.64/0.42 | 0.42/0.92 | 0.92 | 0.92/1.95 | 1.95/0.02 | 0.02/0.12 | 0.12/2.1 | 0.12/1.9 | 3.9/0.14 | 0.14/0.37 | 0.37/3.81 | 0.37/12.85 | 12.85/1980 |
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