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To deploy precision assembly equipments quickly for manufacturing with easy implementation of the hardware and software, simple modularized assembly system architecture with functional oriented modules was established on the basis of the developed assembly equipments. The related key technology, including the equipments' system architecture and technological approaches in achieving manipulation and...
This paper presents a concept for testing camera based ADAS, in order to reduce time and cost in the development phase. By adapting an existing virtual environment for the camera system, identifying and enhancing the important features for the testing detection function, the testing ADAS shall record the virtual driving scenes and deliver the same results as in real environments. A method to generate...
Nonlinear stiffness of rolling bearing is the root cause of the nonlinearity of a bearing rotor system. In this paper, bearing stiffness is calculated with a complete model for angular contact ball bearing. The bearing stiffness matrix is then integrated with finite element model of a rotor to study the nonlinear stiffness of rolling bearings. Calculated results are compared with the results of FAG's...
In this paper a Pt Archimedean-spiral interdigitated microelectrode with containing trenches was put forward, fabricated and characterized. Pt film with thickness 300nm was deposited by radio frequency (RF) magnetron sputtering on a Ti deposited n(100) Si substrate. On this Pt coated Si substrate a passivation layer of Si3N4 film with thickness 350nm was coated by plasma-enhanced chemi-cal deposition...
Traditionally, it takes a long time to build the simulation's model manually. This paper presents a fast method to get the model through the Deneb/Quest software secondary development. It is pointed out that we can manage the production information using general visual interface and transfer the information through the extensible markup language (XML). The method that is applied to the simulation...
European manufacturing and construction sector is wrestling with the fundamental and rapid changes in their business environment. Business environment is becoming more dynamic and distributed, thus old standardization and mass-customization methods can no longer support the companies. In order to survive the companies must be able to offer fully customized product-service concepts instead of technical...
The aim of this research is to organize the disassembly of reusable equipments with a model for arranging maintenance tasks together. Disassembly of reusable parts for their introduction on the second-hand market is discussed. Execution zone and tasks preparation are important criteria. The proposed model is used for aircraft equipment dismantling. Utilization strategy is proposed, based on an heuristic...
The theoretical models of the modern mechanism are becoming more difficult to be designed. The manufacturing feasibility largely constrains the design freedom. In order to liberate the design constraints of mechanisms and improve the innovation ability of the mechanical drive, in this paper, 3D CAD models which have been digital assembled and direct manufactured by selective laser melting are used...
A MEMS (Micro-electro-mechanical systems) fluid viscosity sensor with resonant trapezoidal micro cantilever is introduced in this paper. The fluid viscosity can be measured through the relationship between the fluid viscosity and the quality factor, the resonant frequency of the micro cantilever immersed in the fluid. In order to improve the sensitivity of the viscosity sensor, the geometry of the...
A product family is a set of similar products obtained from a common platform. Products in a product family are linked with each other by the emergent attributes (such as the commonalty). The commonality of a product family affects the production volume of sharing components, and furthermore the production volume affects the cost of manufacturing, reuse, and recycling and so on. The green design methods...
This paper focuses on the development of an electric spindle integrated with an electromagnetic ring balancer. Firstly the electromagnetic ring balancer is designed and then 3D model of self-balancing spindle integrated with this balance er is created. Based on the design, an on-line balancing principle of self-balancing spindle is proposed. The prototype machine fabrication process of the balancer's...
To improve the positioning accuracy of a certain type of bridge gantry machining center, a positioning error compensation method based on support vector regression (SVR) is presented. After analyzing the influence of training data sets distribution, and pointing out that SVR may have a substandard performance when the training data are distributed sparsely at neighborhood of outliers or distributed...
In this paper an efficient and robust method for Boolean operations on triangulated solids is presented. It is applied to regularized Boolean operations including union, difference, and intersection. This approach is better than other methods because three optimizations have been introduced. First, the constructed topology information improves the data structure from discrete triangles to point indices,...
This paper focuses on the multi-sensor information fusion of the basic concepts, multi-sensor information fusion structure are introduced, and the main multi-sensor information fusion algorithm further research and discussion, the multi-sensor information fusion autonomous mobile robot assembly application, for example, further confirmed that the application of multi-sensor information fusion algorithm...
The tendency of the current Computer Numerical Control (CNC) machine tools is high speed, high precision, high reliability, intelligence, integration and openness. However, there exists contradiction between high speed and high precision. The machine tool system is so complicated that its model is difficult to be constructed, simultaneously, in order to keep precision, the model will be very complex,...
This paper presents a genetic algorithm for Multi-Model Assembly Line Balancing Problem (mmALB). The chromosome representation of the problem is based on priorities. Stochastic universal sampling is used and elitist selection is adapted to avoid degeneration. A new fitness mechanism is achieved to simultaneously balance the cycle time between stations while smoothing workload between-within stations...
Atomic layer deposition (ALD) technology is a self-limiting ultrathin film deposition method. In ALD reactions, the reaction temperature plays a key role. And generalized predictive control (GPC) algorithm is adopted to control the temperature of a radiant heating reactor. The mathematical model of the system's temperature uniformity is calculated with heat transfer theory. Since temperature control...
The electromechanical coupling phenomenon in CNC machine tool has an important influence on the dynamic precision of the feed system. The complicated dynamic characteristics and their evolutions with different parameters will aggravate the research difficulty of the electromechanical coupling mechanism. In this paper, taking SL250 lathe as the research object, the servo torque and mechanical structure...
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