Sound field separation technique based on single surface measurement using pressure-velocity transducers

u57fau4e8eu58f0u538b-u632fu901f u6d4bu91cf u7684 u5355u9762u58f0u573au5206u79bbu6280u672f

The Surface Measurement and Registration on the Process of Multi-Point Closed - loop Forming

u591au70b9u95edu73afu6210u5f62u4e2du7684 u66f2u9762 u6d4bu91cfu4e0eu914du51c6

The small measuring field of sensor unit is the key problem in the free form surface measurement of large scale objects .

u672cu6587u9488u5bf9u5927u578bu7269u4f53u81eau7531 u66f2u9762 u6d4bu91cfu4e2duff0cu4f20u611fu5668u5355u5143u6d4bu91cfu533au57dfu5c0fu7b49u95eeu9898uff0cu63d0u51fau4e86u4e00u79cdu57fau4e8eu7c98u6027u76eeu6807u5b9eu73b0u7a7au95f4u56feu50cfu62fcu63a5u7684u65b9u6cd5u3002

Based on summarizing the methods of the surface measurement and its theories and limits the thesis mainly analyses that of measuring the antenna surface precision by the laser non-contact fine measurement .

u672cu6587u662fu5728u6982u8ff0u578b u9762 u68c0u6d4bu7684u5404u79cdu65b9u6cd5u53cau5176 u68c0u6d4bu539fu7406u548cu9002u7528u5c40u9650u6027u7684u57fau7840u4e0auff0cu4e3bu8981u5bf9u91c7u7528u6fc0u5149u975eu63a5u89e6u5f0fu7cbeu5bc6u68c0u6d4bu7684u5149u5b66u65b9u6cd5u8fdbu884cu5929u7ebfu578bu9762u7cbeu5ea6u68c0u6d4bu4f5cu4e86u5206u6790u3002

Research on Large Curved Surface Measurement System

u5927 u66f2u9762 u68c0u6d4bu7cfbu7edfu7684u7814u7a76

This paper gather up current technology of human skin surface measurement and bring forward research method based on image analysis according practical application .

u672cu6587u603bu7ed3u4e86u76eeu524du56fdu5185u5916u7684u76aeu80a4 u8868u9762 u68c0u6d4bu6280u672fuff0cu5e76u7ed3u5408u5b9eu9645u5e94u7528uff0cu63d0u51fau4e86u57fau4e8eu56feu50cfu5206u6790u4e3au57fau7840u7684u7814u7a76u65b9u6cd5u3002

Design of the Ultrasonic Nondestructive Curved Surface Measurement System Data Interface

u66f2u9762 u5de5u4ef6u8d85u58f0u65e0u635f u68c0u6d4bu7cfbu7edfu7684u6570u636eu63a5u53e3u8bbeu8ba1

3D Surface Measurement System for Free-Form Surface Based on Closed-Light-Section Method

u57fau4e8eu95edu5408u5149u5200u6cd5u7684u81eau7531u66f2u9762u4e09u7ef4 u5f62u8c8c u6d4bu91cfu7cfbu7edf

According to the requirement of the high precision aspheric surface measurement an effective aspheric surface measurement system is designed and realized .

u4e3au6ee1u8db3u975eu7403u9762u5149u5b66u5143u4ef6 u8868u9762u7cbeu5ea6u7684 u6d4bu91cfu8981u6c42uff0cu8bbeu8ba1u548cu5b9eu73b0u4e86u4e00u79cdu9ad8u6548u6570u63a7u975eu7403u9762u6d4bu91cfu7cfbu7edfu3002

Study on Some Critical Issues in Free-form Surface Measurement

u81eau7531 u66f2u9762 u6d4bu91cfu82e5u5e72u5173u952eu95eeu9898u7684u7814u7a76

On the basis of geometry model the impact of structure parameters on vertical resolution ratio of the system is analyzed and the parameters are optimized which offer the theoretical foundation of sculptured high accuracy surface measurement online .

u5728u5efau7acbu51e0u4f55u6a21u578bu7684u57fau7840u4e0auff0cu5206u6790u4e86u5404u9879u7ed3u6784u53c2u6570u5bf9u7cfbu7edfu7eb5u5411u5206u8fa8u7387u7684u5f71u54cduff0cu5bf9u7ed3u6784u53c2u6570u8fdbu884cu4e86u4f18u5316uff0cu4e3au5b9eu73b0u81eau7531 u66f2u9762u7684u9ad8u7cbeu5ea6u5728u7ebf u68c0u6d4bu63d0u4f9bu4e86u7406u8bbau4f9du636eu3002

Results of measurement show that these measures could achieve purposes in curved surface measurement and have wide applications .

u68c0u6d4bu7ed3u679cu8868u660euff0cu8fd9u4e9bu6280u672fu53efu4ee5u5b9eu73b0u5bf9u5927 u66f2u9762u7684u9ad8 u7cbeu5ea6 u68c0u6d4buff0cu5e76u4e14u5177u6709u5e7fu6cdbu7684u5e94u7528u524du666fu3002

This paper has analyzed in detail the necessity of DMA in data collecting of curve surface measurement and given out the circuit for DMA and described the theory and programming method .

u672cu6587u8be6u7ec6u5206u6790u4e86DMAu65b9u5f0fu5728 u66f2u9762u8f6eu5ed3 u6d4bu91cfu6570u636eu91c7u96c6u4e2du7684u5fc5u8981u6027uff0cu7ed9u51fau4e86DMAu65b9u5f0fu7684u786cu4ef6u7ebfu8defuff0cu53d9u8ff0u4e86u5176u5de5u4f5cu539fu7406u548cu7f16u7a0bu65b9u6cd5u3002

The measuring principle of large curved surface measurement system is intersection measurement of electronic theodolite .

u5927 u66f2u9762 u68c0u6d4bu7cfbu7edfu662fu4ee5u7535u5b50u7ecfu7eacu4eeau4ea4u4f1au6d4bu91cfu539fu7406u4e3au57fau7840u7684u3002

Study on the Optimization of the Laser Scanning 3D Surface Measurement System

u6fc0u5149u626bu63cfu4e09u7ef4 u5f62u8c8c u6d4bu91cfu7cfbu7edfu7684u4f18u5316u7814u7a76

The research of the laser measuring global radar technology can meet the need of the measurement on surface precision of radar antenna reflector under the working state . And it is important to analyze the precision of radar antenna surface measurement technology .

u6fc0u5149u68c0u6d4bu6574u4f53u96f7u8fbeu6280u672fu7814u7a76u662fu4e3au6ee1u8db3u5bf9u96f7u8fbeu5929u7ebfu53cdu5c04u4f53u5728u5de5u4f5cu72b6u6001u4e0bu7684u578bu9762u7cbeu5ea6u68c0u6d4bu7684u9700u8981uff0cu800cu5bf9u96f7u8fbeu5929u7ebfu578b u9762 u7cbeu5ea6 u68c0u6d4bu6280u672fu8fdbu884cu7cbeu5ea6u5206u6790u4e5fu662fu76f8u5f53u91cdu8981u7684u3002

An Aspheric Surface Measurement System Based on the Technology of Motion Control

u57fau4e8eu8fd0u52a8u63a7u5236u6280u672fu7684u975e u7403u9762 u6d4bu91cfu7cfbu7edf

Measurement of Optical Properties of Biological Tissue Based on Scanning Photoacoustic Technology Sound field separation technique based on single surface measurement using pressure-velocity transducers

u5229u7528u626bu63cfu5149u58f0u6280u672fu6d4bu91cfu7ec4u7ec7u5149u5b66u53c2u6570u57fau4e8eu58f0u538b-u632fu901f u6d4bu91cf u7684 u5355u9762u58f0u573au5206u79bbu6280u672f

Research of Adaptive Layout of Point of Freeform Surface Measurement

u81eau7531 u66f2u9762 u6d4bu91cf u4e2d u6d4bu70b9u81eau9002u5e94u89c4u5212u65b9u6cd5u7814u7a76

In-situ Surface Measurement for Large Aperture Optical Mirror Based on Phase Retrieval Technology

u57fau4e8eu76f8u4f4du6062u590du6280u672fu7684u5927u578bu5149u5b66u955cu9762 u9762 u5f62u5728u4f4d u68c0u6d4bu6280u672f

This paper presents the sonic circulation and multi-pulse echo principle and designs roll profile ultrasonic measurement system based on the analysis of 3D surface measurement technology and roll profile measurement methods .

u672cu6587u5728u5206u6790u4e86u4e09u7ef4 u9762u578b u68c0u6d4bu7684u53d1u5c55u73b0u72b6u53cau76eeu524du8f8au578bu7684u68c0u6d4bu65b9u6cd5u7684u57fau7840u4e0auff0cu63d0u51fau4e86u58f0u5faau73afu591au6b21u8109u51b2u53cdu5c04 u6d4bu91cfu539fu7406uff0cu5e76u4ee5u6b64u4e3au57fau7840u8bbeu8ba1u4e86u4e0au4f4du673au5316u7684u8d85u58f0u6ce2u8f8au578bu6d4bu91cfu7cfbu7edfu3002

In this paper some essential rules of complex surface measurement using Three-Coordinate Measurement Machine are proposed in order to reconstruct the high quality and precision CAD model .

u9488u5bf9u76eeu524du5e94u7528u5e7fu6cdbu7684u4e09u5750u6807u6d4bu91cfu673auff0cu63d0u51fau4e86u4ea7u54c1u53cdu6c42u5efau6a21u8fc7u7a0bu4e2du590du6742 u66f2u9762 u6d4bu91cfu89c4u5212u7684u57fau672cu89c4u5219uff0cu5e76u5bf9 u6d4bu91cfu8befu5deeu8fdbu884cu4e86u5206u6790uff0cu4e3au6700u7ec8u6784u9020u51fau7cbeu5ea6u9ad8u3001u54c1u8d28u597du7684CADu6a21u578bu5960u5b9au4e86u57fau7840u3002

In this paper the super-smooth surface measurement and preparation methods and their development are summarized and the chemical mechanical and mechanism of polishing is also discussed .

u7cfbu7edfu4ecbu7ecdu4e86u8d85u5149u6ed1 u8868u9762 u7684 u68c0u6d4bu3001u5236u5907u6280u672fu53cau5176u53d1u5c55uff0cu5e76u8ba8u8bbau4e86u629bu5149u8fc7u7a0bu4e2du7684u673au68b0u5316u5b66u4f5cu7528u673au7406u3002

A Study for the Free-form Surface Measurement of Large-Scale Objects

u5927u578bu7269u4f53u81eau7531 u66f2u9762 u6d4bu91cf u6280u672fu7814u7a76

Application of surface measurement and analysis to monitoring and controlling of machining process

u8868u9762 u6d4bu91cfu4e0eu5206u6790u5728u8c03u63a7u52a0u5de5u4e2du7684u5e94u7528

In this paper a new 3D surface measurement method with computer vision based on wavelet transform is proposed .

u672cu6587u6839u636eu7acbu4f53u89c6u89c9u539fu7406uff0cu63d0u51fau4e86u4e00u79cdu57fau4e8eu5c0fu6ce2u53d8u6362u7684u4e09u7ef4 u66f2u9762u8ba1u7b97u673au89c6u89c9 u6d4bu91cfu7684u65b0u65b9u6cd5u3002

A new technique for 3-D surface measurement is developed .

u63d0u51fau5e76u7814u7a76u4e86u4e00u79cdu65b0u7684u4e09u7ef4 u8868u9762 u6d4bu8bd5u6280u672fu3002

Based on the fiber optic sensor technology and triangulation method a novel fiber optic triangulation sensor was proposed for surface measurement .

u57fau4e8eu5149u7ea4u4f20u611fu6280u672fu548cu4e09u89d2u6d4bu91cfu65b9u6cd5uff0cu63d0u51fau4e86u4e00u79cdu7528u4e8e u66f2u9762 u68c0u6d4bu7684u65b0u578bu5149u7ea4u4e09u89d2u4f20u611fu5668u3002

Implementation Approach for Gaussian Filter in Surface Measurement Applying B-spline Function

u8868u9762 u6d4bu91cfu4e2du9ad8u65afu6ee4u6ce2u5668u7684Bu6837u6761u51fdu6570u5b9eu73b0u65b9u6cd5

For realizing the surface measurement of the shell and thin sheet as well as solar array and airplane wing the sensor array was configured based on fiber bragg grating ( FBG ) sensors .

u4e3au5b9eu73b0u592au9633u80fdu5e06u677fu3001u98deu673au673au7ffcu7b49u8584u677fu7c7b u66f2u9762 u7684 u52a8u6001 u68c0u6d4buff0cu6784u5efau4e86u4e00u79cdu57fau4e8eu5149u7ea4u5149u6805uff08FBGuff09u7684u4f20u611fu9635u5217u7cfbu7edfu3002