Results 221 to 230 of about 59,853 (261)
Some of the next articles are maybe not open access.
Integrated Model and Compensation of Thermal Errors of Silicon Microelectromechanical Gyroscope
IEEE Transactions on Instrumentation and Measurement, 2009Based on the thermal interferential moment, the dynamic thermal error induced by accelerations of a microelectromechanical system (MEMS) gyroscope is analyzed. The electromechanical-thermal error is discussed. The integrated thermal error compensation method considering the electromechanical-thermal error and the dynamic thermal error induced by ...
Jiancheng Fang, Jianli Li
openaire +1 more source
A Priori Error Bound for Moment Matching Approximants of Thermal Models
IEEE Transactions on Components, Packaging and Manufacturing Technology, 2019This article focuses on the moment matching methodology for deriving dynamic compact thermal models (DCTMs) of electronic components. For the first time, an a priori error bound is theoretically established both in the time and frequency domains, which is suited to accurately estimate the approximation error introduced by DCTMs in practical ...
Lorenzo Codecasa +2 more
openaire +2 more sources
Synthesis Error Modeling and Thermal Error Compensation of Five-Axis Machining Center
Materials Science Forum, 2006The synthesis error model of UCP710 five-axis machining center is divided into two parts: the position and orientation error models, and the article gets their models which are used as real-time compensation. One data collector system of thermal displacement and temperature is developed and used as real-time compensation for UCP710.
Xiu Shan Wang +2 more
openaire +1 more source
Adaptive input selection for thermal error compensation models
CIRP Annals, 2020Abstract The presented method selects optimal inputs for compensation models based on the Thermal Adaptive Learning Control methodology. The number of inputs and the individual inputs for each considered thermal error are automatically adapted. The intelligent combination of k-means clustering and Time Series Cluster Kernel enables the approach to ...
Nico Zimmermann +3 more
openaire +1 more source
Novel thermal error modeling method for machining centers
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2014Thermal deformation is one of the main contributors to machining errors in machine tools. In this paper, a novel approach to build an effective thermal error model for a machining center is proposed. Adaptive vector quantization network clustering algorithm is conducted to identify the temperature variables, and then one temperature variable is ...
Xiaolong Zhu, Sitong Xiang, Jianguo Yang
openaire +1 more source
Modeling and Estimating Thermal Error in Precision Machine Spindles
Applied Mechanics and Materials, 2010Thermal induced errors are significant factors that affect machine tool accuracy. The deformation of spindle is the main contributor to thermal error. In this paper, the thermal characteristics of the spindle system are investigated. Taking into account the coupling of elastic deformation and temperature, the heat conduction of the spindle system is ...
Jian Han, Li Ping Wang, Lian Qing Yu
openaire +1 more source
Dynamic Modeling for Machine Tool Thermal Error Compensation
Manufacturing Engineering, 2001Abstract This paper presents a new thermal error modeling methodology called the Dynamic Thermal Error Modeling which improves the accuracy and robustness of the machine tool thermal error model. The characteristics of the thermoelastic system are investigated from the dynamic system viewpoint. The pseudo-hysteresis effect is revealed to
Hong Yang, Jingxia Yuan, Jun Ni
openaire +1 more source
Thermal Error Modeling and Compensation of a CNC Machining Center
Advanced Materials Research, 2012Error modeling and compensation is the most effective way to reduce thermal errors. In this paper, a novel approach to predict the thermal error of machine tool based on M-RAN is presented, clustering analysis is used to select the temperature variables, and then an easy and economical measurement system is applied to measure the temperature variables ...
Jian Han +3 more
openaire +1 more source
The thermal error optimization models for CNC machine tools
The International Journal of Advanced Manufacturing Technology, 2012Thermal error compensation is becoming a cost-effective way to improve accuracy of machine tools especially with the increasing demand for machining accuracy in recent years. The compensation effectiveness mainly depends on the accuracy of the thermal error model.
Liang Ruijun +3 more
openaire +1 more source
Neural network-based modelling and error compensation of thermally-induced spindle errors
The International Journal of Advanced Manufacturing Technology, 1996This research is concerned with enhancing the accuracy of a machining centre by compensating for thermally induced spindle errors in real-time. A neural network model was developed for on-line thermal error monitoring. A PC-based error compensation scheme was also developed to upgrade a commercial CNC controller for real-time thermal error compensation
openaire +1 more source