In order to improve the accuracy of robot dynamics parameter identification, this paper designs a step-by-step identification method based on weighted least squares. The robot dynamics model is first linearized to obt...
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ISBN:
(数字)9798350373172
ISBN:
(纸本)9798350373189
In order to improve the accuracy of robot dynamics parameter identification, this paper designs a step-by-step identification method based on weighted least squares. The robot dynamics model is first linearized to obtain the minimum parameter set. Subsequently, the friction model is built separately and experiments are designed to recognize the joint friction parameters first. Based on this, the excitation trajectory of finite term Fourier series is designed and optimized and data are collected. The joint moments obtained from the difference between the overall experimentally collected moments and the calculated friction moments are used to obtain the complete robot dynamics parameters based on weighted least squares identification. Comparison of the designed overall identification experiments shows that the total moment residuals of this method are reduced by 35.52% compared with the one-time identification method, which proves the effectiveness of this method.
The paper discusses compliant motion control using Active Observers (AOBs) applied in robotic manipulators. Stochastic estimation strategies for haptic manipulation are introduced. Stability and robustness analysis is...
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The paper discusses compliant motion control using Active Observers (AOBs) applied in robotic manipulators. Stochastic estimation strategies for haptic manipulation are introduced. Stability and robustness analysis is made as a function of stiffness mismatches. Real time adaptation is discussed.
This paper presents an improved method to teleoperate impedance of a robot based on surface electromyography (EMG) and test it experimentally. Based on a linear mapping between EMG amplitude and stiffness, an incremen...
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The paper presents a possible approach to assessment of residential real estate *** situation in small Bulgarian regional towns is *** segment of residential real estate market is often underestimated.A spatial regres...
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The paper presents a possible approach to assessment of residential real estate *** situation in small Bulgarian regional towns is *** segment of residential real estate market is often underestimated.A spatial regression model of hedonic pricing is *** model is based on available through the Internet official *** approach can be used by small businesses operating in the real estate market - real estate agencies,property/ facility management companies,developers,investors,and *** results are suitable to the modern SaaS systems.
Recently in the world, there are a lot of reports concerning the relation between the EEG and the preference in the analysis of the biosignal. In this paper, personal preference using olfactory stimulus and the EEG ar...
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In this paper, we research and analyse the practical needs of robotic arm to complete the complex path planning of robotic arm and smooth transition of multi-attitude in the shortest time under the premise of satisfyi...
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ISBN:
(数字)9798350373172
ISBN:
(纸本)9798350373189
In this paper, we research and analyse the practical needs of robotic arm to complete the complex path planning of robotic arm and smooth transition of multi-attitude in the shortest time under the premise of satisfying the dynamics constraints, and put forward the time-optimal trajectory planning based on NURBS curves and multi-attitude interpolation algorithm based on quaternion with NURBS curves. Using the complex nature of quaternions, the quaternions are converted into three-dimensional space points for curve interpolation, and finally converted back to quaternions to achieve the second-order continuity of multi-gesture interpolation; a time-optimal trajectory planning algorithm based on NURBS curves is designed, which discretises the curves, and fits the NURBS curves using the discrete points. At the same time, the optimal rate solution under all the constraints is calculated point by point according to the discrete points on the motion path, and the optimal velocity curve satisfying the dynamics constraints is obtained, so as to achieve the time-optimal trajectory planning. Finally, the feasibility of the designed trajectory planning algorithm is verified in the simulation software and experimental platform, and it is proved that the algorithm can effectively improve the running speed by at least 30%.
Edge computing is a prospective notion for expanding the potential of cloud computing. It is vital to maintaining a decent atmosphere free of all forms of security and breaches in order to continue utilizing computer ...
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The possibilities for the use of social media in the management of natural disasters are discussed in the paper.A brief overview of natural disasters is *** term social media is defined and their basic functions and c...
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The possibilities for the use of social media in the management of natural disasters are discussed in the paper.A brief overview of natural disasters is *** term social media is defined and their basic functions and components are *** types and the means for their implementation between participants in natural disaster events are *** guidelines for organizing information exchange by social media are proposed.
Various risk situations which describe the possible financial losses of the monitored objects due to occurrence of natural disasters, are considered. The main components of the risk assessment models are discussed: th...
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Various risk situations which describe the possible financial losses of the monitored objects due to occurrence of natural disasters, are considered. The main components of the risk assessment models are discussed: the number of natural disasters (adverse events) and the negative consequences (loss severity). The risk assessment results can support the stakeholders to take more informed decisions regarding the efficient allocation of the available funding for the improvement of the monitored objects protection from natural disasters. A concept for implementing the risk assessment models as a part of a Web integrated information system for risk management of natural disasters are outlined.
In this paper we develop a dynamic continuous solution to the clustering problem of data characterized by a mixture of K distributions, where K is given a priori. The proposed solution resorts to game theory tools, in...
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