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Table 1 DH parameters of snake-like model

From: Non-iterative geometric approach for inverse kinematics of redundant lead-module in a radiosurgical snake-like robot

n

Link id

Link length (a), (mm)

Twist angle (), (rad)

Link offset (d)

Joint angle (θ)

1

1

53.12

π/2

0

θ 1

2

11

π/2

0

θ 2

2

1

53.12

π/2

0

θ 1

2

11

π/2

0

θ 2

3

53.12

π/2

0

θ 3

4

11

π/2

0

θ 4

n

1

53.12

π/2

0

θ 1

2n

11

π/2

0

θ 2n