From: Vision-aided brain–machine interface training system for robotic arm control and clinical application on two patients with cervical spinal cord injury
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a i
d i
\( \theta_{i} \)
1
0
π/2
\( \theta_{1} \)
2
\( a_{2} = 0.41\;{\text{m}} \)
\( \theta_{2} \)
3
\( a_{3} = 0.44\;{\text{m}} \)
\( \theta_{3} \)