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A calibration-based method for interval reliability analysis of the multi-manipulator system

Wang Wei, Liu Shuangyao, Wang Jin, Lu Guodong

Eksploatacja i Niezawodność

2022

Vol. 24, no. 1

42--52

The multiple manipulators can construct a special multi-agent system with the distinction that the type can be serial or parallel according to their cooperative way. We proposed a comprehensive method to handle the problem of reliability estimation. The wide and narrow bound method are applied to calculate the interval reliability respectively when multiple manipulators work as the series system. Aims to decrease the system complexity and enhance the dynamic adjustment capability, the base frame calibration technique is presented to convert the series system to a parallel one, naturally the reliability can be improved significantly. A system composed by three manipulators is utilized as an example to illustrate the feasibility of the proposed method.

Planning of a collision-free trajectory for multiple manipulators

Pająk G., Pająk I.

International Journal of Applied Mechanics and Engineering

2011

Vol. 16, no 2

475-486

In this paper, a global method is presented in order to solve the task of trajectories generation for multiple manipulators operating in the common workspace including moving obstacles. The task of manipulators is to follow by their end effectors the geometric paths given in a task space. The dynamics of the manipulators is taken into consideration. The constraints imposed on controls and state inequality constraints resulting from collision avoidance of a moving obstacle with manipulator links are considered. A final time of the task performance is not fixed. This task is solved based on the calculus of variations. A computer example involving two planar redundant manipulators of three revolute kinematic pairs is presented.