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Intelligent prosthesis is an important component of rehabilitation medicine works, and it plays a decisive role in people's lives. In order to reduce the unnecessary material and time-consuming, and improve design efficiency in the actual prosthetics physical prototype design process, this paper proposes a solution that studying virtual bionic hands in mechanical virtual prototyping, Adams software,...
Clearances exist in all joints in multi-body system, but traditional dynamic analysis method often treats joints as ideal or perfect, ignoring joint clearance, which leads to a large error in the results. Joint clearance can cause structure vibration, bring some peaks to dynamic response, which is bad to the reliability of the system. And clearance also led to joint wear, it makes the clearance get...
This paper presents a learning method to acquire fish-liking swimming with a CPG-based locomotor controller. The proposed method converts the related CPG parameters into dynamical systems that evolve as part of the CPG network dynamics. The teaching signals are derived from the kinematic model of carangiform swimming with trajectory approximation method. A novel coupling scheme for the CPG network,...
The decision of a particular model of solid rocket motor nozzle control precision and flexible functioning of the pivot center drift and systems for power moment problems, using computer-aided design and analysis methods, and establish flexible nozzle coupled rigid-flexible multi-body dynamic model; to role of the body in the system activity for work on the axial load resistance, for sine wave, rectangular...
Based on the Lagrangian equations of first type, the coordinate system is constructed according to the mechanical characteristics of Hexa Parallel Robot. The generalized coordinates are composed of six actuated independent coordinates plus redundant coordinates denoting the position and three Euler angles of active platform. After formulating the Lagrangian function, combining the constraint equations,...
As space robots gain more and more importance in space operations, it was becoming imperative to understand their distinctive dynamics. The dynamics model of the space flexible robots is very complex, and the differential equation derived from dynamics was solved difficultly and slowly. In this paper the dynamics of space flexible robots was discussed, and the fast efficient integration method was...
Copulas represent a useful approach to understanding and modeling dependent components of random variables that allows us to focus explicitly on the dependence structure. This paper aims to seek out the most appropriate copula which can model the dependence structure and measure the risk characteristic for the tail dependent asset returns. Based on the empirical data from the financial market, we...
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