This paper analyzes the sensitivity to non-ideal physical attributes of pulsating and rotating vector carrier-injection based sensorless techniques, as well as of the impact on the accuracy and robustness of the senso...
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This paper analyzes the sensitivity to non-ideal physical attributes of pulsating and rotating vector carrier-injection based sensorless techniques, as well as of the impact on the accuracy and robustness of the sensorless control. The analysis is mainly done on the basis of terminal attributes of machines. Initial observations on the subsequent finite element study are also given. Commonly used filtering and position estimation techniques associated with each carrier signal are considered. The analysis is supported by experimental evidence obtained using interior PM synchronous machines, but the findings are applicable to other AC machines as well.
This research integrates Taguchi's parameter design method, back-propagation neural networks (BPNN), and Davidon-Fletcher-Powell (DFP) method to optimize the process parameter settings of plastic injection molding...
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This research integrates Taguchi's parameter design method, back-propagation neural networks (BPNN), and Davidon-Fletcher-Powell (DFP) method to optimize the process parameter settings of plastic injection molding. Taguchi's parameter design method is used to arrange an orthogonal array experiment and to reduce the number of set-test cycles. Injection Time, Velocity Pressure Switch Position, Packing Pressure, and Injection Velocity are selected as process control parameters and product weight is selected as the single product quality. The experimental data of Taguchi's parameter design method are used for effectively training and testing BPNN. Then, BPNN is combined with DFP to search out the final optimal process parameter settings. Finally, a confirmation experiment is performed to confirm the effectiveness of the final optimal process parameter settings. The experimental results show that the proposed effective process parameter optimization approach can avoid shortcomings inherent in the application of trial-and-error processes or the conventional Taguchi parameter design method. Furthermore, the proposed approach can effectively assist engineers in determining optimal initial process parameter settings and achieving competitive advantages on product quality and costs.
Non-uniform cooling in plastic injection mold is always an important problem. This paper proposed a new method of making mold with complicate cooling structure, and the cooling structure is optimized by genetic algori...
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Non-uniform cooling in plastic injection mold is always an important problem. This paper proposed a new method of making mold with complicate cooling structure, and the cooling structure is optimized by genetic algorithm under unsteady state heat transfer. By using this method, the efficiency and the utility of the proposed optimization procedure is evaluated. In this study, electronic beam welding is used to bond the blocks;a procedure of optimizing the shape of cooling structure was demonstrated.
We have developed a system that allows a piano to perform automatically. In order to play music in the manner of a live pianist, we must add expression to the piano's performance. In the case of piano music, there...
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We have developed an automatic piano that can accurately control the motion of both the keys and the pedal based on performance data that a user has inputted for a particular piece of music. However, this system canno...
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In this paper, I focused on developing a robot arm with three degrees of freedom and an autonomous function. I modeled my research on the actions of animals, which adjust well to environmental change, and aimed for co...
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This research aims to develop a combined sense system that uses the sense of force feedback and the visual by the shape of microscopic features of a micro sample. The visual and the sense of force feedback were expand...
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We are attempting to develop an autonomous mobile robot that has the ability to perform practical tasks in a human living environment by using information derived from sensors and a knowledge database. When a robot is...
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A six degrees of freedom serial hand is designed to move toward an object in an unseen environment. A consciousness-based architecture (CBA) we developed, i.e., a hierarchical human development model showing the relat...
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