A novel control technique of brushless dc motors is proposed in this paper. The design of the fuzzy controller combined with a gray predictor is used to improve the response of a brushless dc motor. Using a gray predi...
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A novel control technique of brushless dc motors is proposed in this paper. The design of the fuzzy controller combined with a gray predictor is used to improve the response of a brushless dc motor. Using a gray predictor to predict the speed errors of the motor and then a compensated energy will be generated which can be used in adjustment of the control energy of the system. Simulation results show that the performance of the control energy and the motor speed is ameliorated.
As to product design itself has quite complexity and many domain influence factors are integrated in concurrent design (CD), conflict phenomena exists in any process of carrying out CD. Conflict elimination is an impo...
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As to product design itself has quite complexity and many domain influence factors are integrated in concurrent design (CD), conflict phenomena exists in any process of carrying out CD. Conflict elimination is an important key to carrying out CD effectively. Conflict usually relates to many members in multi-function group of CD. Negotiation that is a process of multiple iteration and repeated alternation is utilized in CD conflict elimination. Many objects and constraints are considered in the process of negotiation and it is very hard to have no problem in the process of calculation, reasoning, evaluation and decision-making. As to the updating error is a tracing process and a lot of work done before is needed to repeat, efficiency of conflict elimination is very low. In this paper, a method of conflict elimination of product CD based on blackboard model is put forward. Design conflict producing, system and mechanism of conflict elimination based on blackboard model are analyzed and described. It takes gear CD conflict elimination as an example to illustrate the concrete application of the method and system.
With the increasing of global market competition and dynamic change of market environment, consumer needs are more personal and diversified, enterprise production is more flexible. At present, the production cycle per...
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With the increasing of global market competition and dynamic change of market environment, consumer needs are more personal and diversified, enterprise production is more flexible. At present, the production cycle period of traditional manufacturing industry is long, delivering goods is not in time, product quality is not good and resource are not used in reason. Because of the phenomena, products are not met the requirements of market and lack of market competition ability. For changing the situation, the development direction is building concurrent agility dynamic alliance of product development. So this paper puts forward an improved fuzzy reform optimization method of design task in Concurrent engineering (CE). Using this method, enterprise can develop product rapidly to satisfy consumer requirements and have high quality, low cost, reasonable price and good service, that is because it can assign right task to right person in right time for shortening development time of product.
Previous epidemiological researches have studied HFMD transmission pattern, but the study on the patients mobility pattern while seeking treatment is absent. In this paper, we present a statistical analysis of the spa...
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In this paper, a new fuzzy reaching law for discrete-time variable structure controlsystems is developed. Based on this law, a discrete controller and its control algorithm that satisfies the Lyapunov stability can b...
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In this paper, a new fuzzy reaching law for discrete-time variable structure controlsystems is developed. Based on this law, a discrete controller and its control algorithm that satisfies the Lyapunov stability can be easily derived and developed. Compare with the traditional reaching law, the new fuzzy reaching law we proposed has much better performance. The steady state error caused by delay of sampling of discrete system could be greatly reduced.
Radio fingerprint matching localization method promises high localization accuracy but requires extensive infrastructural effort and search operations. This paper proposes a new search strategy for radio fingerprint m...
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For some time now, the automotive industry has been undergoing major adjustments in recent years. Current technological solutions aimed to achieve an autonomous level 5 platform implement increasingly complex software...
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In this paper, a radial basis function network (RBFN) based adaptive H ∞ control scheme for nonlinear systems with unknown hysteresis nonlinearity is developed. This scheme applies the method of pseudo-control to the...
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Place representation is a key element in topological maps. This paper presents bubble space - a novel representation for "places" (nodes) in topological maps. The novelties of this model are two-fold: First,...
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This paper presents experimental studies of impedance force tracking control algorithm for a crack sealing robot. The robot is built to find and seal cracks on the pavement. Regulating contact force improves the perfo...
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