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Issue 4 ， 1996
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Compact 500 W Fast-Axial-Flow CO2 Lasers
Abstract：The compact 500 W fast-axial-flow CO2 lasers is introduced. Emphasas are lasersstructure design and lasers major function.Keywords：CO2 lasers;Lasers heads;Electronic control systems- 40
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Published：2020-08-12 -
On Prism Characteristics or Dynamic Image
Abstract：In this article, the main attentions are paid thcirically to carry out analysing andresearching for dynamic image forming on reflective prism. Further deduce several importantforms of image moveing while the prism is rotating. Oil the basis of this carry outcomprehensive researchment and description for dynamic characteristics and structure ofprism so that the researchment is more simply, systemly, derextly and comprehensiviy.Keywords：Action matrix;Prism;Image deflection;Particular direction- 47
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Published：2020-08-12 -
Study on Focal-Length Function or Positive Compensating Zoom Lens
Abstract：The zoom lens used in capturing and tracing is different from 11ormal zoom lens. It mustoutput the focal-length accurately while verying its focal-length. Ths paper studies the focal length function of the two-component, large zoom ratio, positive compensating zoom lens byusing the actural zoom lens system parameter and gives a method of determining the focallength function. By useing this method, we can avoid the work of point-to--point calibratingfor zoom lens.Keywords：Zoom lens;Focal-lengtlh function- 34
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Published：2020-08-12 -
Random Simulant Calculation of the Earth-reflectionfor Outer Barfle or Space Optical Remote Sensor
Abstract：According to the probability theory, the radiation of the earth-reflection in complexcavity has been calculated by random simulant method in this paper. The distribution of thedirectional radiant intensity of the earth-reflection in orbits has been effectively simulated.This method especially applies to the accurate thermal calculation for the outer cavities of spacecraft.Keywords：Earth-reflection;Random simulation;Heat flux calculation;Outer baffle;Cavity- 35
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Published：2020-08-12 -
Study on the Surface Figure Changes or primary Mirror Centerally Supported Under Gravity Load
Abstract：The surface figure changes of menisctls primary mirror, centrally supported and loadedby the gravity(1g), are studied. The PV and RMS values are used to determine whether thedeformation is reasonable or not. Data processing is done with the help of zernikepolynomials, the aberration composition of the mirror Supported in this way is found', andsome approaches to improve image quality are carried out. At last the rear profile of themirror is optimized.Keywords：Primary mirror;deformation;optimization;Constraint- 45
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Published：2020-08-12 -
Evaluation or Signal-to-noise Ratio or tile Ocean Color CCD Camera─Comparation with Sea WiFS
Abstract：The signal-to-noise ratio of the proposed. three channel ocean color CCD camera isevaluated and the results are compared with those of SeaWiFS remote scnsor from U. S. A.Keywords：remote sensing;sensors- 69
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Published：2020-08-12 -
Simulation and Experiment or piezoelectric Micromotors in Dynamics
Abstract：Based on the ftlndamental mechanism of piezoelectric micromotors in dynamics, asoftware to analyze piezoelectric micromotors in dynamics has been worked out, andsimulatipn of piezoelectric micromotors in dynamics has been carried out. Then measurement'mechanism of piezoelectric nlicromotors in dynamics has been advanced, the experiment ofpiezoelcctric micromotors in dynamics has been done, and the conclusions of mechanism andsimulation of piezoelectric micromotors in dynamics have been tested and verified.Keywords：MEMS;Piezoelectric micromotor;dyllamics;simulation;Model experiment- 52
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Published：2020-08-12 -
Design of Milli-gripper Using Electro-magnetic Force
Abstract：This paper presents the developing status of the integrated milli-gripper. In this paper the design of structure and its important parts of the milli-gripper using electro-magnetic force and wedgeshaped mechanism are introduced. The experimc.nt of the prototype shows good behavior for this milli-mechanism.Keywords：Millimachine;Electro-magnetic driving;Gripper- 34
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Published：2020-08-12 -
Effect of High Temperature Thermomechallical Treatment(HTTMT)on the Structures and Properties of TC4 Alloy
Abstract：The effects of heat treatment process on the microstructures, the mechanical propertiesof TC4 alloy were studied using HTTMT technology. The results showed that using heatingat 950℃, deformation 50 pct, following water quenching, aging 4h at 500℃, then TC4alloy had grain refinement and a unifomly tangled dislocation and precipitate array andexcellent mechanical properties.Keywords：High temperature thermomechanical treatment;Structures;titanium alloy- 43
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Published：2020-08-12 -
Studying or On-line Monitor Control Technology about FMS Cutting Stability
Abstract：In this paper, the way is emphatically discussed about on-line monitor control of FMS cutting stability. On the basis of varying regularity of vibration sygnal in the process of studying FMS cutting using μa=E(a)/F(a)is presented as the monitoring coefficient of FMS cutting stability, and the theory analysis is carried out, and the verifying experimentsare made.Keywords：FMS;Cutting stability;On-line monitor control;Monitoring coefficient- 46
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Published：2020-08-12 -
Dual Compound Axis Servo System of Opto-Electronic Precision Tracking
Abstract：This paper introduces the dual compound axis servo system for opto-electronic precisiontrack. The stability.fart response and the function of improving tracking accuracy are studied. The error curves of tracking system are given.Keywords：Dual compound axis;Precision tracking- 51
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Published：2020-08-12 -
Engineering Analysis and Research of Large-size OE Tracking Gimbals Adopting Welding Structure
Abstract：The application of precise welding structure in the gimbals of large-size OE pointing andtracking instrument is described in this paper. Compared with the traditional castiroll structure, the total weight of the instrument is decreased by 12%-14%. Meanwhile,the high mechanical mode and the axil precision less than 1"(arc second)of the gimbals are achieved. Theintermediate-body of the horizolltal shaft, as an example, the practicability of weldingstructwre applying in large-size precise components of the gimbals, the desigll method andthe approach that decrease the welding distortion,clear up the welding stress to insure the dimension stability is described in detail. The stiffness of the intermediate-body of the horizontal shaft in static and dynamic state is analysised and computered.Keywords：Welding structures;EO tracking and pointing;Gimbals- 58
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Published：2020-08-12 -
^Adaptive Control of Optical Dynamic Systems with Noisy Pump
Abstract：A suggestion of using the adaptive control algorithm,which is designed originally to control the optical dynamic system with no noise-corrupted control parameter,to control the optical dynamic system with noisy pump is raised in this paper. The feasibility of this suggestion is demonstrated with the computer simulation of controlling the Bragg diffraction acoustooptic bistable system(BDAOBS)running with stochastic pump noise, where a BDAOBSwith no noisy pump is employed as the self-referenced dynamic model for control. It is foundthat,because the difference between the outputs of the noise-corrupted optical dynamic system and the self-feferenccd model is chosen to be the augument of the control function,theadaptive control algorithm is still able to be utilized in controlling the noise-corrupted optical dynamic system.Keywords：Optical dynamical systems;Adaptive control;Noise- 56
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Published：2020-08-12 -
A Model and its Application or Q-switched Laser Ablating Sublimable Materials
Abstract：A mathematical model of Q-switched laser ablating sublimable material is established.Ablation efficiency with different pulse widths and peak powers laser is calculated. The conclusions show that high peak power and short pulse width is beneficial for reducing heat affected zone of laser ablation and maintainging high surface integrity.Keywords：laser ablation;mathematical model;Ablation efficiency;Heat affected zone- 30
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Published：2020-08-12 -
Application of Hall-Element in Focus Adjusting System or OE-Tracking
Abstract：In a large OE-tracking equipment,focus adjusting system requires high adjusting accuracy. Because of a chain of links,it is difficult to meet a demand for design often. hall-elementwas applyed directly for measuring line displacement,this "lakes it easy to increase adjustingaccuracy and simplify the structure. This paper presents measuring principle.structure andcharacteristics, researches the relation between the paraments of Hall line displacement senser.Keywords：Hall-element;OE-tracking;Senser- 32
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Published：2020-08-12 -
Application of Spectral. Filter Device in Measuring stellar in Daytime
Abstract：This paper summarizes the spectral characteristics of atmosphere and stellar as well asdetector CCD. In accordance with the spectral characteristics we have adopted the filter device to increase the contrast of stellar to the sky background,thus the ability for measuringstellar is evidently improved in daytime.Keywords：Spectrum filter;Contrast;Stellar measurement- 31
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Published：2020-08-12 -
3-dimension Simulation Real-time Disploug for The Dynamic Position Message or The Theodolite
Abstract：According to the engineering practice,we design two mathematical model of 3-dimensionreal-time display for the simulation of theodolite dynamic position message,and introduce itsrealizing method. In 80486/33Hz computer this method processing time is about three millisecond with C language.- 43
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Published：2020-08-12 -
Study of LD Cloud Telemeter
Abstract：The paper describes LD high current pulse drive,cooling system,principle of echo signaldetection and processing circuit, pulse command signal generation and circuit analysis ForYGY-1 model LD cloud telemeter. Measuring altitude for cloud come upto 1530 m high.Keywords：LD cloud telemter;LD high current pulse drive;Weak signal lift-out- 31
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Published：2020-08-12 -
Research on infrared analyzer used for oil content
Abstract：The paper presents a new infra-red analyzer used for oil content. It is based on principleof Beer law. By using infra-red analysis technigue,the oil content in water can be measured.The device use into environmental monitoring in time and has a bright future.Keywords：Oil content;Infra-red analysis;Environmental monitoring- 32
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Published：2020-08-12 -
Calculation of Gain for Millimeter Diffractive Antenna
Abstract：The gain calculating formula for diffractive antenna with continus phase structure is de. rived by current-distribution method in antenna theory for the first time. The simulative calculation is made for a millimeter diffractive antenna. The results are close to the measureddata. The simulative result is analyzed.Keywords：Diffractive antenna;gain;Current-distribution method- 56
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Published：2020-08-12 -
Design or CCD Driver by Using High-Density Programmable Logic Devices
Abstract：This article describes a high-density programmable logic devices(HDPLD)and architecture of generic logic block(GLB),and design of CCD driver by using a combinational logic array and register in GLB.Keywords：Programmable logic devices(PLD);CCD;Driver;Generic logic block(GLB)- 36
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Published：2020-08-12 -
Characteristics of Position Sensitive Detector and its Application in Optical Triangulation
Abstract：The architecture,principle and characters of position sensitive detector(PSD)are analized and stated. The application of PSD in optical triangulation is described emphatically. Thesystem errors are also analysed.Keywords：Position sensitive detector;Optical triangulation;nonlinear- 54
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Published：2020-08-12 -
A New High-power Fine Alternating Servo System
Abstract：This paper introduces a kind of new high-power and fine alternating servo system. Against the defects of other methods,the system realizes a digital close-loop position servocontrol,using a inverter as power output device to drive a AC motor,using a high precisionencoder as position measuring device and using a 16-bits single-chip microprocessor as controllor. The advantage of this system is simple,eco6omical and reliable.Keywords：High-power alternating servo system;Inverter;Single-chip microprocessordigital control- 30
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Published：2020-08-12 -
Properties of Exclusive OR Logic and Logic Realization of the Galois Fetid Arithmetic Operation
Abstract：In this paper,the properties of Exclusive OR logic is discussed. The efficiency of the Exclusive OR logic is expoundcd by the entropy function of information theory. The ExclusiveOR method of combinational logic design is given. Then the Exclusive OR logic of Galoisfield arithmetic operation is discussed.Keywords：Exclusive OR logic;Complcte set;efficiency;Galois field- 36
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Published：2020-08-12 -
Signal Processing Scheme for Optical heterodyne Interferometer with Wide Range
Abstract：Based on the combination of phase measurement and integer periodic phase measurement,a signal processing scheme,which is used for optical heterodyne interferometer withlarge range, is described. It not only maintains the high measuring resolution, but also enlarges the measuring range,with solving the problem of large range and dynamically measuring a displacement.Keywords：Optical heterodyne interferometer;signal processing;Phase measurement- 56
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Published：2020-08-12 -
Study On Acousto-optic Rapid Scan in Visible Range Spectrophotometry
Abstract：A method of spectrophotometry in visible range using electronic tuning rapid spectroscope is presented in this paper. As an example,the absorption spectrum of CuSO4?5H2O was measured and the error of measurement was analysed. The results of experiment demonstrated that AOTF can be used fpr spectrophotometry in place of mechanical filter wheels,moving mirrors,rotating diffraction gratings.Keywords：Acousto-optic tunable filter;Spectrophotometry- 28
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Published：2020-08-12
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