Aim at the problem of tool cutting monitoring system between tool wear estimate by gradual information and judgment of tool failure by sharp signal, this study is to construct an integration measurement. It puts forward density parameter E of outline peak of machined surface image texture to estimate tool wear condition. It researches tool failure judgment with cutting force monitoring. Hence real-time monitoring of cutting process can be implemented to represent cutting-tool wear, failure and rationality of parameter selection in cutting state.
In order to create the virtual earthquake environment, VRML modeling language is used to build a real environment that is a 3D mountain scene after earthquake. A simulation model of quadruped search-rescue robot is established in VRML modeling technology. The walking stability of quadruped search-rescue robot is observed using the VRML model established with the change of gravity curve. Simulation results show that the gravity displacement curve of the robot is smooth.
Aiming at completing search task under disaster condition problems, the structure scheme of transmission mechanism and dynamic regulation mechanism were designed. Firstly, the structure scheme of transmission mechanism includes drive unit, worm gearbox unit and the bearing unit; secondly, the structure scheme of dynamic regulation mechanism includes movement allocation unit, sequential adjustment unit and dynamic balance unit. Whats more, the movement simulation of quadruped search robot was carried out with the Pro/E platform. The experimental result shows that the quadruped search robot can achieve stable movement, and then it verifies reliability of the robot design.
According to the structure scheme of quadruped search robot, the simulation model of quadruped search robot was established in ADAMS. The kinetics equation was analyzed using Lagrange theory. The gait transition of the quadruped search robot was analyzed based on the study of kinetic characteristics. We compared and assessed the different step length and the different moving trajectory curves of the quadruped robot, which supply the valuable reference data to the design as well as the important criterions to the trajectory planning and the control of theory prototype. Simulation results show that the motion characteristics of the system are closed related to the length of step and the frequency of gait transition.
A novel path segmentation algorithm for automatic guided vehicle is designed by machine vision technology. Firstly, wiener filter based on parameter estimate is used to restore path image in HIS model. Secondly, mutivariate stepwise fitted regression method is adopted to smooth guide line edge of path image. It can be concluded that path guide line of automatic guided vehicle under industry surrounding may be recognized accurately through this way.
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