定位方法

实际破裂点/mm

定位点

计算误差

迭代次数

最小二乘法

1

(30, 40, 50)

(34.81, 37.24, 57.17)

2.780885*10⁻⁶

-

2

(27.46, 43.78, 52.06)

5.416332*10⁻⁷

-

3

(29.39, 43.01, 47.79)

1.078191*10⁻⁶

-

1

(100, 100, 0)

(95.35, 94.03, 0.98)

1.017506*10⁻⁶

-

2

(92.95, 97.40, 0.28)

5.533379*10⁻⁷

-

3

(101.90, 99.59, 0.66)

6.573619*10⁻⁷

-

Geiger法

1

(30, 40, 50)

(28.64, 40.50, 50.66)

3.115651*10⁻⁷

5

2

(28.42, 38.04, 48.71)

3.470470*10⁻⁷

5

3

(31.74, 44.01, 51.04)

1.509080*10⁻⁷

5

1

(100, 100, 0)

(104.78, 102.91, 0.50)

4.293240*10⁻⁷

18

2

(97.75, 101.10, 0.50)

2.505926*10⁻⁷

8

3

(104.60, 109.18, 0.35)

3.196705*10⁻⁷

8

Levenberg_Marquardt算法

1

(30, 40, 50)

(31.45, 37.45, 49.23)

3.032803*10⁻⁷

4

2

(28.17, 42.79, 50.37)

3.354007*10⁻⁷

4

3

(30.10, 38.86, 51.08)

1.573923*10⁻⁷

4

1

(100, 100, 0)

(104.72, 102.81, 0.51)

4.293178*10⁻⁷

12

2

(97.74, 101.09, 0.49)

2.505863*10⁻⁷

6

3

(104.61, 109.17, 0.35)

3.196455*10⁻⁷

5