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Methods & Materials We designed a linear Kalman filter to combine the data obtained by the optical and inertial tracking systems.
Human Movement Science, 17(2): 189-200, 1998
Modeling and calibration of inertial and vision sensors, International Journal of Robotics Research, 29(2-3): 231-244, 2010
Sukhatme, Visual-Inertial sensor fusion: Localization, mapping and sensor to sensor self calibration, International Journal of Robotics Research, 30(1): 56-79, 2011

Acknowledgements This research was supported by National Natural Science Fund of China (No.51175254).
References [1] Y.Cao, Won S.Chang and Charies D.MacArthur, An analytical study of turbine disks incorproating radially rotating heat pipes, Proceedings of the ASME. 3 (1998) 103-109 [2] Y.Cao, J.Ling, R.Rivir, C.MacArthur: A numerical analysis of gas turbine disks incorporating rotating heat pipes, Proceedings of the ASME. 3 (2000) 61-67 [3] T.C.Jen, G.Gutierrez and S.Eapen etc, Investigation of heat pipe cooling in drilling applications.Part I: preliminary numerical analysis and verification, International Journal of Machine Tools & Manufacture. 42 (2002) 643-652 [4] Judd, R.L., Aftab, K., Elbestawi, M.A, Investigation of the use of heat pipes for machine tool spindle bearing cooling, International Journal of Machine Tools & Manufacture. 34 (1994) 1031-1042 [5] K.Ma, H.J.Xu and Y.C.Fu, The Effect of a Rotating Heat Pipe in a Brazed Diamond Grinding Wheel on Grinding Temperature, Key Engineering Materials. 416 (2009) 274-278

Citation & Key Engineering Materials Vols
It is found that brittle materials tend to exhibit a smaller chip storage problem than ductile materials [7].
Gray natural granite and red natural granite were used as workpiece materials for the sawing experiments.
Wang: Key Engineering Materials Vol. 202-203 (2001), p. 199 [6] D.M.
Malkin: Transactions of the ASME: Journal of Manufacturing Science and Engineering Vol. 123 (2001), p. 13 [9] S.

Design and Precision Analysis of Muzzle Angle Measurement System Zhou Jian-ping1, 2, Wu Xiao-yun2, a, Zhang Peng-fei2, Gu Guo-hua2 1 School of Mechanical Engineering, Nanjing University of Science &Technology, Nanjing 210094 2Artillery Academy, Hefei, Anhui Province, China, 230031, awuxingky@163.com Key words: Muzzle angle, measurement system, error analysis, precision analysis Abstract: The traditional muzzle angle measurement method measured by optical range quadrant can’t satisfy the demand.
The theoretic axis of the bore is the ligature of section geometry centers in the origination position O and the muzzle A, which is OA. 2 Measurement Principles of Muzzle Angle and Design of Measurement System 2.1 Calculation model of muzzle angle When the firing angle is zero, the largest bending angle of barrel is: (1) Here, ——largest bending angle of barrel when the firing angle is zero; ——bending angle of barrel by self-weight, which can be calculated by: (2) E——elastic modulus of material; K——moment of inertia of section; Q——weight of barrel; L——barrel length out of cradle along the muzzle orientation.
International Journal of Machine Tools &Manufacture. 1999(39):1087-1101
Nanjing University of Science and Technology. 1998,8:1-7-117

Parameters of permanent magnet, focusing coil and tracking coil Material Parameter1 Parameter2 Permanent Magnet Relative permeability 1.06 Remnant flux density（T） 1.4 Focusing coil Current 0.3 (A) 56 turns Tracking coil Current 0.3 (A) 56 turns Figure 3 The simulation results of the spatial distribution of magnetic field (a) The magnetic field produced by the focusing coil (b) The magnetic field produced by the tracking coils (c) The magnetic field produced by the permanent magnet (d) The overall synthetic magnetic field of the actuator Through the simulation, it can be concluded that the magnetic field of the actuator is symmetric to the center of the actuator but not uniform.
Acknowledgements This work was supported by the National Natural Science Foundation of China (51075254), the Shanghai Pujiang Program (11PJ1404000) and the Innovation Program of Shanghai Municipal Education Commission (11YZ16).
Meng, “Research on the focus servo system of DVD”, Master Thesis, Shanghai, College of Information Science and Engineering of Fudan University, 2004
Park, “Dynamic characteristics of stepped cantilever beams connected with a rigid body”, Journal of Sound and Vibration, vol. 255, no. 3, pp. 701-717, 2003

(Nature Science Edition), 08(2007),5-8 ] is (3) As σ is quite small, the high-order terms can be ignored, therefore the simulation results could meet the requirements of the algorithm. 4 Hardware implementation based on FPGA The FPGA chip is EP2CC8Q208C8, one of the CycloneII FPGA of Altera, and it has abundant on-chip resource with 8256 logic elements, 9-bit elements Embedded multiplier, 2 PLL, up to 165888 bits of RAM, and 138 programmable I/Os[[] Weihai Chen, Zhaojin Wen, Zhiyue Xu, Jianhua Wang, Implementation of 2-axis Circular Interpolation for a FPGA-based 4-axis Motion Controller, 2007 IEEE International Conference on Control and Automation Guangzhou, CHINA - May 30 to June 1, 2007:600-605 ], the Verilog HDL hardware description language and TestBench file was written in EDA tool QuartusII 13.0,simulate the function in ModelSim-Altera 10.1d emulator by using TestBench file, then we design the PCB board to get the material arc interpolation controller, and use
This interpolation is able to guarantee all of the interpolation points fall on the arc, and there is no cumulative error[[] Jianxin Jin, Controllable step interpolation method for arbitrary space curves of machine tools in CNC system, Chinese journal of mechanical engineering,04(2000), 95-97 ].
This work is supported by science and technology of Lanzhou, Gansu province, China under grant #213188 References

The Research of Clock Traffic Congestion Model and Synchronization Technology Baifen Liu1, a, Ying Gao2, b 1 School of Electrical and Electronic Engineering, East China Jiaotong University, Nanchang, China 2 School of Basic Sciences, East China Jiaotong University, Nanchang, China achair0088@yahoo.com.cn Keywords: Ethernet, STM32F407VG, Flow model, Delay-constraint routing, Clock synchronization.
Introduction The time is dimensionless order metric the material evolution or events.
Measurement and control precision of the measurement and control system in this industrial environment restricting modern monitoring techniques in the development of modern science and technology.
[5] Shir-Kuan Lin, Chao-Min Wang and Shyh-Jier Wang, “Design and implementation of anti hand shaking position control for a voice coil motor,” Journal of Applied Physics, vol.103, no.7, pp.07F128, 2008.

Numerical Study of Interior Trajectory of Missile Ejection Based on Mechanics Yongquan Liu1,2,a, Anmin Xi1,b , Hongfei Liu1,c 1School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China 2School of Architecture & Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China arichiel_lau@163.com, bxi_anmin@163.com, cliuhongfei_zt@163.com Keywords: interior trajectory simulation, FLUENT, flow field Abstract.
Both the peak value of the calculations and the max. test data are acceptable according to the material of the missile bottom.
[4] Yanhui Tang et al.: Working Process Simulation of Gas and Steam Launching System, Journal of Naval Aeronautical and Astronautical University, Vol.24(2009), p.431-434

Sih. in: Mechanics of Fracture Material Science and Technology Press,London(2004),p.53 [10] S.M.Yin, X.S.Xü, H.Y.Li and G.Wang in: Advanced mathematics (Vol.1), East China University of Science and Technology Press, Shanghai(2004),p.40 [11] K.C.Wu：submitted to International Journal of Fracture(2000).

Introduction Sediment carrying capacity is one of the keys of the sediment study, is the basic of studying material transport, bed scour, coastal evolution and many other problems.
[2]Dou, Fengwu Dong, The carrying capacity of the tidal currents and waves,Chinese Science Bulletin, 40 (1995) 443-446
China Environmental Science Press(1992)
Journal of Hydraulics Division84(1958)