Motion Control for Cylindrical Objects in Microscope's View Using a Projection Method - II: Collision Avoidance With Reduced Dimensional Guidance

Dengpeng Xing, Fangfang Liu, Song Liu, De Xu

Abstract: This paper intends to use lower dimensional information to accurately compute higher dimensional distance, based on which presents a motion controller to avoid collision. This work is useful for precise computation and fast response required by motion control in microscope's view. We propose a projection method to use planar contours or even to transfer to a one-dimensional (1-D) searching problem to quickly obtain 3-D distance vector between cylindrical or cylinder enveloped objects, and as a result 11 cases are classified in total. Using distance as the basis of the repulsion force, we present a motion controller combining forces of attraction, repulsion, stuck, and detach to generate motion in the micro-operational space. Simulations and experiments are carried out to demonstrate their validity.