急回机构运动学：位置、速度与加速度的可编辑动态演示

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → O_2
2. Circle(O_2, r2) → circO2A
3. Intersect(circO2A, xAxis, 2) → A_{old}
4. Rotate(A_{old}, th2, O_2) → A
5. Vector(O_2, A) → pO2A
6. Textfield(xO4) → InputBox1
7. Textfield(r2) → InputBox3
8. Textfield(r4) → InputBox4
9. Textfield(yO4) → yO4edit
10. Angle(A_{old}, O_2, A) → th2dep
11. Segment(O_2, A) → L2
12. Textfield(scaleV) → InputBox8
13. Textfield(scaleA) → InputBox9
14. Point({xO4, yO4, 0}) → O4
15. Vector(Ov, Ov + (((0, 0, w2) ⊗ pO2A) * scaleV)) → vA2
16. Point({Ov + vA2}) → endvA
17. Vector(Oa, Oa + (((0, 0, w2) ⊗ ((0, 0, w2) ⊗ pO2A)) * scaleA)) → aA2n
18. Vector(Oa + aA2n, Oa + aA2n + (((0, 0, dw2) ⊗ pO2A) * scaleA)) → aA2t
19. Line(O4, A) → f
20. Circle(O4, r4, xOyPlane) → d
21. Intersect(f, d, 1) → B
22. Segment(O4, B) → L4
23. Vector(O4, A) → pO4A
24. OrthogonalLine(Ov, L4, xOyPlane) → dirVA4
25. Line(endvA, L4) → dirVA2A4
26. Intersect(dirVA4, dirVA2A4) → C
27. Vector(Ov, C) → vA4
28. Vector(C, endvA) → vA2A4
29. Vector(Oa, Oa + (((0, 0, w4) ⊗ ((0, 0, w4) ⊗ pO4A)) * scaleA)) → aA4n
30. Vector(Oa + aA4n, Oa + aA4n + ((2 * ((0, 0, w4) ⊗ vA2A4)) * scaleA / scaleV)) → aCor
31. Point({Oa + aA4n + aCor}) → endCor
32. Point({Oa + aA2n + aA2t}) → endaA2t
33. OrthogonalLine(endaA2t, L4, xOyPlane) → diraA4t
34. Line(endCor, L4) → diraA2A4
35. Intersect(diraA4t, diraA2A4) → D
36. Vector(endCor, D) → aA2A4
37. Vector(D, endaA2t) → aA4t