Advanced Materials Research Vols. 443-444

Abstract: FANUC industrial robots are used more and more widely. However, robots’ communicant protocol and interface are different and unopened. Robot interface technology has become an important factor. Controlling robot movement via interfere has become an important issue in recent years.NI LabVIEW has powerful data acquisition and measurement ability and friendly graphics programming interface. It has the most percentages in the field of automatic measurement. The interface between PC and FANUC industrial robot is studied. A serial of sub VI are developed based on LabVIEW, including connecting robot with PC, initializing robot interface, reading and changing system variables, reading and changing position variables, displaying current position, controlling robot programs and so on. This paper describes the hardware and software components of the system, and the typical communicant and control module between PC and FANUC robot developed by LabVIEW. After testing, the function of every module can be achieved and performs well.

Abstract: Taking a certain history building as an example, we introduce a real 3D digital method for Large-Scale history building using 3D laser scanner and total station, and analyze the precision of coordinate conversion model and established 3D model. Firstly, the building are separated into many stations which are scanned separately in order to get the points cloud of each station, at the same time, the coordinates of targets and feature points of each station are obtained with laser scanner and total station respectively; next step, we convert the points cloud of every station with conversion program developed by Matlab so that the data are under the uniform reference frame with the collected homonymy targets; finally, the points cloud which have been registered are meshed in order to build real 3D digital history building model, meanwhile we analyze the precision of conversion model and the real 3D model. The result shows that this method is fast, efficient, and the prospective model has high precision.

Abstract: Detection of quality is a necessary procedure in the processing of machining punched sheets. It includes detection of the size of the holes and the distance of neighbored holes on the punched sheets and other machining parameters. Detection completed by workers is the traditional method which is low precision and low efficiency. According to the requirement of real industrial production this paper approaches a detection system based on machine vision which is used to detect the machining quality of punched sheets. The system is including the methods of detection of sub-pixel edge and circle fitting, and is used to improve the precision of detection. Experiment suggests that the detection result of this system is better.

Abstract: EDFA is an important component in WDM optical communication systems. But the uneven characteristic will lead to reduced effective transmission bandwidth and system performance degradation. This paper studies on issues of EDFA gain flattering based on long period fiber grating, and provides detailed analysis of the method of using LPFG to achieve flat EDFA output gain. Numerical simulation result shows that this method can reduce unevenness to 0.2dB and below.

Abstract: This paper introduces an acquiring and processing system of a new type of optical spectrometer based on vision technology. It mainly introduces the hardware structure to acquire the spectrums dispersed by the spectrometer, and the multi-spectrum image processing software as well. Of the different spectrum wavelengths ranges from 400nm to 740nm, the system can create both the color image and the 68 channels gray scale image. Virtual instruments technology is introduced into this system and it makes programming easier and faster by combining virtual instrument and vision technology. The programming of the image processing software uses LabVIEW platform.

Abstract: To broaden the application range of hardware in loop simulation for electronic controlled unit, study on model simulation of electronic unit pump diesel engine oriented to control is made, the requirement and selection of simulation model oriented to control in electronic unit pump diesel engine is provided, model of simplified nonlinearity in diesel engine and electronic unit pump system are established in Matlab/Simulink, model verification shows that this model can achieve relative accuracy, by means of calculation time and parameter, different calculation step and method affecting model output is analyzed and compared. Real engine model is applied into hardware-in-loop simulation test, its results show that model can perform real-time ECU hardware-in-loop simulation test accurately.

Abstract: With more and more applications of advanced manufacturing mode in enterprise, computer aided parameter design will become increasingly important. In the paper, automatic liquid packaging machine architecture is analyzed, and then shaping principle of lapel shaper is discussed in detail, and key parameter of collar intersecting curve is determined by lapel shaper plane outspread drawing. More ever, solution steps of collar intersecting curve is put forward in detail, and lapel shaper of parametric design base on Visual Lisp is also illustrated by listing general realization flow chart and key code..

Abstract: The dynamic response of the slider to external interference is analyzed through solving eqations simultaneously of the momentum equations and the time-dependent modified Reynolds equation based on the FK-Boltzmann modified model. Analysis software of autonomous copyright was produced, and the number of the copyright is 2009SR039126. Using this software, the dynamic response curves of the slder under different shocks were obtained, and the numerical results show that under an external motivation the significant vibration is produced. but the slider is capable of returning to the equilibrium position in 0.006ms. Then the lubrication function parameters are calculated, and variable rules of the values also were analyzed. The results shows the oscillation of slider in up-and-down direction have a larger effect on the film lubrication function, yet in the rolling direction the influence is the smallest. Consequently, the fluctuation in up-and-down direction is the main factor of affecting the dynamic lubrication function.

Abstract: . SAT problem is one of important NP-complete problems with widespread application. In this paper, a new DNA computing model based on self-assembled nanoparticle probes is presented to solve this problem. Its essence is that all possible combinations of variables for given problem are encoded in the recognition zone of self-assembled nanoparticle probes. Major benefits of this method include vast parallelism, extraordinary information density and easy controllable operation. The result reveals the potential of DNA computation based on nanotechnology in solving complex problem.

Abstract: This paper introduces a kind of multi-function nursing bed control system which has won Chinese invention patent. This system takes AT89C51 as a core, uses a unique control mode for a single electrical machinery driven four transmissions, and adopts a modular control technology which respectively controls the movements of four lead screws through electrical machinery’s positive or negative rotation, and electromagnetic clutch’s connection or disconnection to decide the power transmission direction, so as to realize the different postures of the nursing bed, and meet the demands of patient care.