Affiliation:
1. School of Mechanical Engineering and Automation, Northeastern University, Shenyang, China
2. Key Laboratory of Dynamics Reliability of Major Mechanical Equipment, Shenyang, Liaoning Province, China
Abstract
Dynamic performance of the power transmission line inspection robots (PTLIRs) is of great importance, which would heavily affect the stability of the robot during obstacle avoidance. In this paper, a detailed dynamic performance analysis method of PTLIR is presented by considering the effect on the mechatronic system caused by obstacle avoidance. First, the dynamic modeling of the robot and control system model of the revolute joint are given based on the mechatronic modeling. Then, dynamic characteristics of mechanical subsystem are analyzed by studying the change of the inertia matrix during obstacle avoidance. Next, to analyze the control subsystem performance, three kinds of pole assignment methods which used to tune the controller parameter are compared. Finally, a series of numerical simulations are performed, which prove the time-varying characteristic of load inertia during obstacle avoidance has a great influence on the dynamic performance of the robot, moreover, the changes of natural angular frequency and damping coefficient parameters could be used to evaluate dynamic performance. The main results of the paper can provide an effective tool to analysis dynamic performance of the PTLIR, which is meaningful to improve inspection stability.
Funder
National Natural Science Foundation of China