Table of Content

25 December 2018, Volume 38 Issue 6

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Simulation of Trapping Mercury Ions in A QuadrupoleMultipole Separated and Linear Ion Trap

WANG Chao-quan；TU Jian-hui；CUI Jing-zhong

2018, 38(6):  1-8.  doi:10.12060/j.issn.1000-7202.2018.06.01

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 A model of quadrupole-multipole separated and linear ion trap was built by SIMION simulation software, based on this model the first steady region when Mercury ions are trapped respectively in two trapping regions, i.e., quadrupole trap and sixteenpole trap was simulated in this work, and the characters of ion motion in two trapping regions were analyzed. In addition, the trapping volume and velocity distribution of the ion clouds in quadrupole-multipole ion trap as well as the process that Mercury ion clouds shuttle between two trapping regions were studied. When those ions trapped go into steady state the ion number density distribution in two trapping regions are discussed respectively. In particular, ion number degradation and compensation were demonstrated when Mercury ion clouds had been trapped and shuttled continuously in quadrupolemultipole separated trap. In the end, according to the analyses above, Doppler frequency shift associated with Mercury ion trapping in quadrupole-multipole ion trap was calculated and performance level of Mercury ion microwave clock was estimated.

Quasi-Optical Antennas Design in the Standard Measurement #br# Facility on the Emissivity from Microwave Calibration Targets

LI Bin；JIN Ming；BAI Ming；LI Zhi-ping

2018, 38(6):  9-15.  doi:10.12060/j.issn.1000-7202.2018.06.02

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The aperture antenna design in the near field scattering measurement is addressed, for developing the standard measurement facility on the microwave emissivity of calibration targets.In this standard facility, the emissivity from calibration targets is to be obtained based on the Kirchhoff′s laws of thermal equilibrium, that means by obtaining electromagnetic scattering in a bi-static measurement configuration the electromagnetic reflectivity is inferred for determining the emissivity.Actually, to fulfill the task within a limited measurement space and in high frequency bands, the antennas to be used as transmitter and receiver have to be optimistically designed.The Quasi-Optic antennas are introduced for the scattering measurements of calibration targets.Furthermore, with help of commercial simulation software FEKO, the full-link simulations from the transmitter to targets then to the receiver are conducted for analysis.The results show that: by using antennas of Quasi-Optic design, the illumination at the target zone can be focused with an edge attenuation, also to be flat in phase distribution.As a result, the power transmitting attenuation can be greatly reduced, and it is allowed to approximately obtain the far-field scattering characteristics of the calibration targets which is very important to infer the reflectivity based on limited measured scattering. After all, the simulation results verified the design principle and application performance of the antenna designs for the standard facility of the microwave emissivity.Also the proposed design can be a reference for antenna designs in general near-field test system developments.

Design of Infrared Radiance Temperature Standard Device in Vacuum Low Temperature Environment

ZHANG Jun-qi；WANG Wen-Ge；WANG Kuo-chuan；HUANG Ze；ZHANG Qi；LIU Hao

2018, 38(6):  16-20.  doi:10.12060/j.issn.1000-7202.2018.06.03

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The present condition and questions facing of remote sensing are introduced, the significance of establishing the infrared remote sensing radiance temperature measurement standard device in the vacuum low temperature environment is clarified. The current research situation at home abroad is introduced, and the technical route and design scheme of the standard device for one′s own unit are appraised.

Calibration of High Sound Intensity Lever Based on Amplitude-Phase Control  for Dual Resonance Sound Waves

YANG Xiao-wei；YAN lei；ZHU Gang；LIU Xin；BAI Tian

2018, 38(6):  21-24.  doi:10.12060/j.issn.1000-7202.2018.06.04

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The calibration methods of high intensity lever for sound intensity probe, its present and history are described. Based on the two sound sources with highpressure level and low distortion, the high sound intensity lever calibration system has been developed. A new method named amplitude-phase control for dual resonant sound waves is proposed, and new calibration system can generate high sound intensity levels up to 150dB at 500Hz with distortion(＜0.5%). The calibration example and uncertainty evaluation of the new system are also given.

Review on Kinematics Calibration Technology of Manipulator

XIE Xi-hua；LI Zhi-yong；ZHOU Xuan-yi；ZHANG Zhi-yun；FAN Shi-meng

2018, 38(6):  25-32.  doi:10.12060/j.issn.1000-7202.2018.06.05

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Robotic manipulator kinematics calibration is of great significance to improve the absolute positioning accuracy, and it has become the target of extensive research to explore the efficient method of robotic manipulator calibration. In this article, calibration methods are classified into model-based parameter kinematics calibration, autonomous calibration and non-parametric kinematics calibration. It introduces the research status of the model-based parameter kinematics calibration from kinematics calibration modeling, measurement of terminal  attitude, parameter identification and error compensation. After comparing the various calibration methods, their advantages and disadvantages are extracted. Finally, the problems existing in the robotic manipulator kinematics calibration are analyzed and the future development trend of the calibration technique is prospected.

Study on the Foundation of Laser Tracker Geographic Coordinate #br# System and the Measurement Method of 6-DOF

WANG Tao；LIU Kai；JIANG Yun-xiang；WANG Qiang

2018, 38(6):  33-37.  doi:10.12060/j.issn.1000-7202.2018.06.06

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A new method is expounded which transforming the measuring coordinate to local geographic coordinate，by using three transfer-points and a theodolite known azimuth. Three laser trackers built the geographic coordinate, severally measure three points on the aim object which can create a aim coordinate, and then the 6-DOF parameters in geographic coordinate are computed. This method can improve the diameter of measurement, and the sampling frequency.

A Position and Attitude Tracking Method Research for Air Bearing Simulator

DENG Song-bo；LIU Xiao-yong；LI Ke；LIU Shu-xuan；WANG Yan-bo

2018, 38(6):  38-43.  doi:10.12060/j.issn.1000-7202.2018.06.07

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In order to simulate the attitude motion and orbital maneuvering motion of the space vechicle in ground state, the air bearing spacecraft simulator would be moved in large plane and angle space. To make the actual orbit and attitude movement of the simulator to form the closed-loop control, it is needed to provide a method to measure the position and attitude of the simulator in rapid way and high precision. The iGPS is used to measure the position of the simulator, while the SINS to attitude. The air propulsion devices and the reaction wheels are used as the servo motion to realize the position and attitude tracking. It could be widely applied in other environments of large scale space position and attitude measurement tracking.

Analysis of Calibration Precision for Cube-mirror Based on CMM

NI Ai-jing；GUO Qing；ZHAO Jie；YU Wang-zhu；CAI Zi-hui；YANG Chun

2018, 38(6):  44-49.  doi:10.12060/j.issn.1000-7202.2018.06.08

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The cube-mirror is used as process reference for the spacecraft products manufacturing. To analyzing calibration precision for cube-mirror based on CMM, tests with different sampling strategies were done, the repeatability data of the measurement for cube-mirror angle is obtained.Besides, two theoretical analysis methods of analytical and Monte Carlo method are used to calculate the measuring uncertainty for the angle between the adjacent surfaces of the cube-mirror respectively. Data show that, the results of experiment and theoretical analysis are consistent, the measurement uncertainty of the angle between the adjacent surfaces of the cube-mirror obtained by the two theoretical analysis methods is almost the same, the measurement uncertainty of the angle decreases with the increase of the number of sampling points, the minimum value is close to 0.0020°.The method of theoretical analysis can be used to evaluate the calibration precision and planning sampling of cube-mirror for measuring task.

Development of Novel High Temperature Transient Heat-Flux Sensor Based on Thin Thermopile

ZHOU Li-li；LIU Zheng-kun；Bao Jian-guang；CHAI Wei；HONG Yi-lin

2018, 38(6):  50-56.  doi:10.12060/j.issn.1000-7202.2018.06.09

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At present, aiming at the problems of poor consistency and immature preparation of transient heat flux sensor in China, this paper puts forward a kind of photolithography process and the preparation method of the ion beam sputtering coating process, two hundred pairs of T-shaped metal thin film thermocouples are deposited at 10mm×10mm water-cooled block, measuring 1μm thermal resistance of the alumina temperature difference,finally the heat flux value is obtained.The new high-temperature transient heat flux sensor is calibrated by the comparison method. The consistency error of 0.211%, that is, the consistency of the process is about 99.79%. Experiments show that the novel high temperature transient heat flux sensor has very good consistency, the preparation process has good repeatability and portability, and can meet the needs of high temperature transient heat flux detection. In order to promote the application of heat flux sensors and standardize and mass produce,it provides a good technical support.

Universalized Design of Spacecraft Power Supply and Distribution Test System

MEN Bo-long；ZHANG Ruo-lin；ZHOU Nan

2018, 38(6):  57-62.  doi:10.12060/j.issn.1000-7202.2018.06.10

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The main function of the power supply and distribution test system is providing power for the spacecraft, sending cable instructions to the spacecraft, and receiving/disposing the cable telemetry signals downlink of the spacecraft, during the whole process of spacecraft system test. The mainstream power supply and distribution test systems are custom-made, which leads to higher R & D cost, longer development cycle and lower reliability. Universal power supply and distribution test system based on host bus and board realize the finalization and the batch production. It solves the problem of different spacecraft′s interface definition, and reduces the R&D cost, shorten the development cycle and improve the reliability of the product. At present, this system has been successfully applied to the testing of several spacecraft. With the continuous enrichment of the type spectrum and the deep application of the spacecraft model, it will have a wider application prospect in the future.

Influence of Aircraft Characteristics on Radar Detection and Tracking

LIU Guan-xin

2018, 38(6):  63-67.  doi:10.12060/j.issn.1000-7202.2018.06.11

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Radar target characteristics and flight characteristicsare are the inherent characteristic of aircraft, also are important characteristic of radar detection and tracking. The influence of target characteristics and motion characteristics on radar detection and tracking is analyzed by theoretical and practical data, and the influence regularity is summarized. It can be reference for aircraft and radar engineering technicians.

Research on the Hollow Fiber Membranes Spun with #br# Perfluorosulfonic Resin for Compressed Air Dehumidification

REN Chun-bo；SHEN Zhao-xin；WU Qing-yuan；FU Zhi-gang

2018, 38(6):  68-72.  doi:10.12060/j.issn.1000-7202.2018.06.12

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Hollow fiber membranes were made by perfluorosulfonic resin and furthermore their dehumidification perfomance for compressed air were tested under vacuum mode and reversesweep mode by actual experiments. The results show that the hollow membranes have excellent dehumidification perfomance under both working modes. Working pressure, inlet flow rate,  reverse sweep ratio, vacuum degree could influence the dehumidification performance. Under an operating pressure of 0.4MPa, the inlet flow rate of 1L/min and vacuum degree of 5kPa, the dew point of the compressed air can be reduced to -39.4℃.

Research on the Influencing Factors of Bolt Tightening Torque Coefficient Based on Orthogonal Test

GAO Bing-tao；WANG Xiao-san；ZHONG Shan；MEI Hong-wei；WANG Hui-long

2018, 38(6):  73-77.  doi:10.12060/j.issn.1000-7202.2018.06.13

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Based on orthogonal test, the experimental research on the factors affecting the bolt tightening torque coefficient is carried out, including the bolt performance level, the washer performance level, the lubrication conditions and the tightening speed. The results show that the bolt performance level is the most significant factor among them.The research has a widely significance in the field of the reliability of the bolt connection.

Calibration and Application of Static Test System Based on PVDF Sensor

LIU Qiu-nan；BAI Yan；XU Guo-liang；BA Xiao-lei；YIN Wei；WANG Zhi-cheng

2018, 38(6):  78-81.  doi:10.12060/j.issn.1000-7202.2018.06.14

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In order to solve the loading measurement problem in special structure static test, the design method of static test based on PVDF piezoelectric film is introduced. According to the features of PVDF film and static test, calibration method for PVDF sensor with gasbag is given. Finally, a cylindrical shell test with radial pressure is conducted to validate the effectiveness of present method.

Design and Experiment Verification of the Quantitative #br# Detection of Valve Action for Lunch Vehicle

SUN Hai-liang；CUI Jing-zhi；ZHOU Hao-yang；FAN Shu-qun；ZHANG Lian-wan；WANG Yue-ping

2018, 38(6):  82-86.  doi:10.12060/j.issn.1000-7202.2018.06.15

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Valves are key equipments in the pressurization and propellant feed system of lunch vehicles. They are used to add and spill the propellant, to measure and maintain the tank pressure and so on. It is important to detect the valve action for the safe operation of valves. The development of aerospace sets a still higher demand on the valve action detection. Up to now, the cutoff and the seal level cannot be quantitatively judged for the valves of lunch vehicles. The mechanism for the valve action detection is designed. The simulation and the experiment are carried out. The experiment results verified that the valve action can be quantitatively detected by the proposed method.

Research Electric Parameter Test of Pyrotechnics

ZHANG Li-li；WU Yong-hong；ZHANG Yue-kui；MA Chen；DAI Yi-lin

2018, 38(6):  87-90.  doi:10.12060/j.issn.1000-7202.2018.06.16

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The test method for the electric pyrotechnics is introduced, the test system of the electric parameter of pyrotechnics is built. The capacitor discharge ignition circuit for pyrotechnics is designed, the operating principle of the capacitor charge and discharge circuit and the formulas to calculate the main parameters are introduced, and the ignition circuit current is measured. The method of Four lines gradingtesting is proposed in the test of the variety bridge circuit DC resistance of pyrotechnics. The bridge wire meltdown time is determined though the variety of the ignition circuit voltage. The reliability and correctness of using this test system to measure electrical parameters of pyrotechnics are conformed. And it also offers effective ways to research of test for electrical parameters of pyrotechnics.

Design of the Solenoid Valve Driven Circuit Based on the Interlock Double Command Control

ZHANG Sheng-yan；RONG Gang；WANG Jian-kang；LIU Fei

2018, 38(6):  91-95.  doi:10.12060/j.issn.1000-7202.2018.06.17

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In order to meet the demand of the power system solenoid valve under the constraint of the volume and weight, a scheme of electromagnetic valve drive circuit based on the interlock double command control is proposed. The scheme of the valve driving circuit is designed by using the reverse interlock instruction and the serial parallel design. Meanwhile, the control flow of electromagnetic valve based on McBSP internal bus is designed. The drive circuit simulation model and the current test platform of 150N solenoid valve are established. The simulation and test results show that the drive circuit can effectively realize the second failure of solenoid valve open and close.