Abstract: With the high-speed development of science and technology, the research and application of the humanoid robot receive more and more attention in the field of intelligent robot.Firstly, the important characters of the humanoid robot are introduced in this paper.Then the architecture of the human robot is analyzed and the research works around the world are overviewed.At last, the prospects for the future research and development are described.
Abstract: Portability is important in developing applications for Wireless Sensor Networks (WSN). The design for WSN sensor driver using of abstraction layer and FSM theory could achieve portability and improve WSN performance. The drivers of two different typical sensors were implemented, and according to FSM theory, the sensors state transition diagrams are depicted. We research the state transition in detail and summarize the interface. A key conclusion could be drawn that the operation of the sensors need the interface of Reset, Power Down, Start Read, etc. A UML generalization relationship could be created. On running time, the embedded programs access the driver implementation via universal virtual function interface, so that it could accommodate to various sensors.
Abstract: A new method was proposed for vehicle speed monitoring and early warning based on RFID sensor tag technology to realize real-time speed monitoring in high way. The principle of speed monitoring, the hardware and software of RFID sensor tag and reader network using GPRS technology were introduced in detail. Experimental results show that the actual velocity of vehicles can be acquired by on board RFID sensor tag, when the vehicle drives over the limited speed, the system can voice alarm to the driver. The identity information, actual speed and time of vehicle are read wirelessly by readers installed along the roadside, these messages can be upload to control center through GPRS network to monitor vehicle states, such as the position, average speed, the flow of transportation and so on.
Abstract: This paper focuses on multi-disciplinary resource configuration optimization problem of collaborative manufacturing in an open environment. First a semantic-based manufacturing resources retrieval and deployment framework is presented, then the four layers of the proposed framework, i.e. resource modeling, resource retrieval and annotation, resource discovery, and optimal resource deployment are discussed in detail.
Abstract: This paper takes the parallel indexing cam mechanism as research object and analyzes the formation of the profile of cam. On the basis of Visual C++6.0 object-oriented method, we have successfully developed the CAD/CAE/CAM system of parallel indexing cam mechanisms, which provides the parameter input dialogue frame with friendly interface. We can generate accurate profile data by using it, then create the three-dimensional model of the parallel indexing cam and assemble it with other parts under the Pro/E environment. At last, we don’t build virtual prototype until we transform the model into ADAMS through special interface Mechanism/Pro. Finally, this paper has researched the theory of contact and collision, carries out the motion simulation. We have received many valuable conclusions of practical application through all of the process.
Abstract: Micro metal injection molding (µMIM) prior to conventional plastic injection molding (PIM) has become widely demanding due to its smaller size, more complex geometric surface and time consuming on its product. Metal and ceramic in powder form of various sizes up to µm is mixed with binder system to produce products that meet the requirements. Nano size yttria stabilized zirconia (YSZ) with average particle size of 25nm, was tested both physically and mechanically for its properties before mixing and injection process using several testing such as Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX), pycnometer density, critical powder volume percentage (CPVP) and rheology respectively. Grain shape for YSZ particle is near spherical with the diameter range between 21.2 – 33.5nm while the CPVP shows the highest powder loading was 41.4%. Binder system of 70% palm stearin and 30% polypropylene (PP) was then mixed with YSZ at 37%, 38% and 39% by using internal mixer with roller blade type. By using CPVP of 41.4% as the guideline, mixing was done beyond the critical point until it is capable of becoming the dough mixture and was found that 43% powder loading is the highest loading it can achieved. This dough form of every mixture of powder loading was crushed to obtain pellet size as the feedstock. Rheology test was carried out for each powder loading at 180oC, 190oC and 200oC with the load increasing from 10N to 20N to determine the plastic behavior and best relationship between viscosity (Pa.s) and shear rate (1/s). Dilatant flow behavior for all the powder loadings and smooth data distribution during testing at 180oC was observed respectively. Critical parameters involving in injection process such as mold temperature (oC), melt temperature (oC), pressure (bar) and time (s) was manipulated for every powder loading to obtain the best result with no defects such as shot and flashing. Each critical parameter increased gradually as the powder loading (%) increased. Debinding and sintering process will be carried out to determine the strength and toughness by using micro hardness and micro tensile test respectively.
Abstract: Traceability is an important function for the management of tire enterprise, and building a manufacturing process tracing system will make the contribution for the monitoring of the product quality and the confirmation of accident reason. So a tire manufacturing process tracing framework based on RFID technology was proposed combined with the characteristics of tire manufacturing. A tracing mapping model was designed for the entire manufacturing process.
Abstract: Based on dynamics theory, we have built several structures models close to the real cantilever of atomic force microscope. This paper deduces the higher eigenmodes vibration of single-layer camped-free cantilever in the resonant frequency calculation formula, extend to derive the equation of the resonant frequency for the cantilever with a mass M* on the moving end, introduce and extend the design theory of thin-walled "equivalent" concept, establish the bi-layer or multi-layer film structure of the equivalent model, use the single-layer camped-free cantilever method discussed in the resonant frequency of the multi-layer cantilever beam. Make full use of the higher eigenmodes vibration model, to discuss the ideal condition of cantilever spring constant.
Abstract: In the hot strip rolling simulation system, the movement of looper lifter is divided into two stages. First the lifter rises freely, then it is collided with strip bar. For the dynamic simulating, the transfer models and parameters for two serial moment motors or hydraulic looper lifters are built. On the base of a new tension formula, the tension with looper lifter is got by folding.
Abstract: In order to firstly assure the mating features of high importance during the selective assembly process, a selective assembly method considering the feature weightings is proposed. All of the features are evaluated by fuzzy entropy weight method. Their weight coefficients which present the importance are defined. Based on the dissymmetrical quality loss function and the weight coefficients, the multi-objective model for selective assembly is established. A specific generic algorithm considering target weightings is used to solve the optimization model. It can search the preference region using the Pareto dominant order to derive satisfactory solutions with high quality. Finally, the method is used for the selective assembly of a certain aero engine’s subassembly to invalidate the feasibility.