Patents by Inventor Shih-Ming Wang

Shih-Ming Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130207330
    Abstract: A dual-toggle-type mobile platform structure comprises a base, a motor, a ball screw, a linear slide, a first toggle link rod, a second toggle link rod, a guide rail and a work platform. The second toggle link rod has an end coupled to the first toggle link rod and the other end coupled to the work platform. A connecting position of the second toggle link rod and the first toggle link rod is designed with an optimal configuration to provide a smaller footprint than the conventional dual-toggle-type mobile platform structure, and the advantages of a larger stroke of the work platform and a smaller feed resolution difference, and the structure serves as a reference of an optimal manufacturing area.
    Type: Application
    Filed: April 25, 2012
    Publication date: August 15, 2013
    Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: SHIH-MING WANG, YAN-TING CHEN
  • Publication number: 20130211570
    Abstract: A build up edge monitoring method is provided for performing online real-time detection and suppression of abnormal build up edges of cutters occurred in a CNC manufacturing process. Signal variation analysis and fast Fourier transform are used for analyzing signals and establishing an algorithm of diagnosing build up edges to improve the efficiency and reliability of the cutting abnormality diagnostics. A vibration acceleration signal is captured and filtered to a frequency exceeding 1.1 times of a blade passing frequency, and an occurrence of accumulated chips is determined according to a sudden increase of the vibration acceleration and whether the main vibration frequency of the current vibration signal determined by a fast Fourier transform analysis matches with the frequency of the build up edge characteristic, and a shutdown instruction is issued to a CNC controller to shut down a cutting machine.
    Type: Application
    Filed: April 25, 2012
    Publication date: August 15, 2013
    Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: SHIH-MING WANG, CHIEN-DA HO
  • Patent number: 8348099
    Abstract: A powder allotting device comprises a supporting device, a coupling device, and a separating device. The supporting device is a base of the powder allotting device, and the supporting device is coupled to the separating device by the coupling device. The a separating device further comprises a rotary plate with a curved grooved structure, a plurality of movable valves, a scraper, and a cylinder with a plurality of T-shape grooves, and a plurality of slices. The plurality of slices are inserted into the T-shape grooves and enter the curved grooved structure, moving up and down the T-shape grooves.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: January 8, 2013
    Assignee: Chung Yuan Christian University
    Inventors: Yan-Ting Chen, Shi-Hsi Liu, Chien-Da Ho, I-Feng Lo, Shih-Ming Wang
  • Patent number: 8342055
    Abstract: This invention provides a precise positioning platform by using of toggle type principle, wherein the positioning platform can be single toggle type, double toggle type, or combination with multi-link to enhance positioning platform precision.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: January 1, 2013
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Yu-Ding Chen
  • Patent number: 8272334
    Abstract: A three-link toggle type positioning platform comprises a first motor, a first ballscrew coupled to said first motor, a first linkage attached to the ballscrew a second linkage attached to the first linkage, and a third linkage attached to the second linkage. The ballscrew drives the first linkage, and then the first linkage drives the second linkage, and then the second linkage drives the third linkage, which drives a platform in a predetermined direction.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: September 25, 2012
    Assignee: Chung Yuan Christian University
    Inventors: Sheng-Wei Wang, Kuen-An Hsie, Liang-Zheng Huang, Shih-Ming Wang
  • Publication number: 20120211418
    Abstract: A system and method for concentrating a slurry is disclosed. A preferred embodiment comprises a filter that is used to filter a slurry into a concentrate and a permeate. A portion of the permeate is used in a backflow operation of the filter once a pressure differential of 0.8 bar is obtained from the filter inlet to the permeate outlet of the filter.
    Type: Application
    Filed: February 18, 2011
    Publication date: August 23, 2012
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Shih-Ming Wang, Wen-Cheng Chou
  • Publication number: 20120169430
    Abstract: An on-chip balun is disclosed. The balun includes a first transmission line, a second transmission line and a coupling transmission line. A terminal of the first transmission line receives a first signal. A terminal of the second transmission line receives a second signal and the other terminal of the second transmission line is coupled to a reference voltage. A terminal of the coupling transmission line receives the reference voltage, and the other terminal is directly connected to the other terminal of the first transmission line. The coupling transmission line and the second transmission line are disposed in parallel for coupling the second signal to generate a coupling signal on the coupling transmission line. The first and second signals are differential signals and the phases of the second signal and the coupling signal are opposite.
    Type: Application
    Filed: March 28, 2011
    Publication date: July 5, 2012
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shih-Ming Wang, Ming-Wei Lee
  • Patent number: 8103376
    Abstract: The present invention provides a system and method for the on-machine 2-D contour measurement, employing the contour measurement, coordinate system transformation, error identification, and image matching theory in image processing field to develop the on-machine measurement of X-Y-plan manufacturing error of a micro device manufactured by a high-precision micro-device machine tool, contour error, and trace error.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: January 24, 2012
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Han-Jen Yu
  • Publication number: 20120006140
    Abstract: Both shifting rate and positioning precision of a three-link toggle type positioning platform can be increased by using mechanism of three-link concept in this invention.
    Type: Application
    Filed: May 5, 2010
    Publication date: January 12, 2012
    Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: Sheng-Wei Wang, Kuen-An Hsie, Liang-Zheng Huang, Shih-Ming Wang
  • Publication number: 20110259139
    Abstract: This invention provides a precise positioning platform by using of toggle type principle, wherein the positioning platform can be single toggle type, double toggle type, or combination with multi-link to enhance positioning platform precision.
    Type: Application
    Filed: April 25, 2011
    Publication date: October 27, 2011
    Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: SHIH-MING WANG, Yu-Ding Chen
  • Publication number: 20110252904
    Abstract: A toggle type with one axial positioning machine can increase positioning precision and decrease the impact from external impact by using the three-links design.
    Type: Application
    Filed: March 29, 2010
    Publication date: October 20, 2011
    Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: Kuo-Ming Sun, Zheng-Wei Mai, Nai-Ming Chen, Shih-Ming Wang
  • Publication number: 20110228077
    Abstract: The present invention discloses a system for monitoring dynamic stability of micro machine is provided in this invention, wherein an image-capturing device and an analytic device are included. The image-capturing device captures an image on a surface of a work piece milled by the micro machine. The analytic device comprises an image input interface, means for gray-scaling an image, means for analyzing abnormal gray-scaled value of the gray-scaled image, and means for analyzing numbers of veins of the gray-scaled image. This invention also provides a method for monitoring dynamic stability of micro machine.
    Type: Application
    Filed: January 14, 2010
    Publication date: September 22, 2011
    Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: Shih-Ming Wang, Chia-You Chung, Chih-Chun Lin
  • Publication number: 20110228050
    Abstract: The present invention discloses a system for positioning micro tool of micro machine is provided in this invention, wherein the system comprises a stereo-photographing device, an image analysis system, a PC-based controller, and a micro machine. The image analysis system can analyze position of the micro tool of the micro machine and work piece by using algorithm, and the micro tool is then positioned to a pre-determined location. A method for positioning micro tool of the micro machine is also provided in this invention.
    Type: Application
    Filed: January 13, 2010
    Publication date: September 22, 2011
    Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: SHIH-MING WANG, Chia-You Chung, Chih-Chun Lin
  • Publication number: 20110226811
    Abstract: A scraper and a plurality of slices are allocated on a powder allotting device. For achieving the matter of uniformly allocating powder, the present invention utilizes the scraper and the plurality of slices for scraping and separating powders.
    Type: Application
    Filed: March 29, 2010
    Publication date: September 22, 2011
    Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: Yan-Ting Chen, Shi-Hsi Liu, Chien-Da Ho, I-Feng Lo, Shih-Ming Wang
  • Patent number: 7930952
    Abstract: A toggle-type positioning platform including a first platform, a motor, a screw rod, a second platform and a linkage is provided. The motor and the screw rod are disposed on the first platform; the motor is coupled to the screw rod and suitable for driving the screw rod to rotate. The second platform is above the first platform and is suitable for moving back and forth alternately along a predetermined path, wherein an included angle exists between an extended direction of the predetermined path and the screw rod. The linkage is disposed between the first platform and the second platform, and is connected between the second platform and the screw rod. The linkage is driven by the rotation of the screw rod, to drive the second platform to move along he predetermined path. Accordingly, the positioning precision of the toggle-type positioning platform is enhanced.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: April 26, 2011
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Chih-Peng Yang
  • Patent number: 7929155
    Abstract: The present invention provides a method and system for on-machine 3-D depth measurement. The same image retrieving apparatus measures the first distance for the width of the similar gray-level region of cutting-surface from the first angle, and measures the second distance for the width of the similar gray-level region of cutting-surface from the first angle superimposing the second angle. The width of the similar gray-level region of cutting-surface comprises the cutting-surface and the shadow of the bottom portion of the cutting-surface. And then the cutting-surface depth is calculated according to the first angle, the second angle, the first distance, and the second distance.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: April 19, 2011
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Han-Jen Yu
  • Patent number: 7876159
    Abstract: A multi-frequency and multi-mode power amplifier is provided. The amplifier has a carrier power amplifier and a peaking power amplifier. The carrier power amplifier receives a first signal and outputs a first amplified signal, in which a first transistor size adjusting unit is included to adjust an equivalent transistor size based on a mode indication signal. The peaking power amplifier receives a second signal and outputs a second amplified signal, in which a second transistor size adjusting unit is included to adjust an equivalent transistor size based on the mode indication signal.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: January 25, 2011
    Assignee: Industrial Technology Research Institute
    Inventors: Shih-Ming Wang, Cheng-Chung Chen, Yu-Cheng Hsu, Chung-Chi Lai
  • Patent number: 7743490
    Abstract: The present invention discloses an auto-assembling system for small shell devices. The system includes a first transportation apparatus, a second transportation apparatus, a first driving module, a second driving module, a power assembling module and a control circuit. The first transportation apparatus having a first transportation belt and the second transportation apparatus having a second transportation belt are used to transport the frames or the covers of the devices. The power assembling module mounted on the end of the first transportation apparatus and the second transportation apparatus is used for vertically pressing downwardly the frames and the covers such that the frames and the covers can be assembled.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: June 29, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Shih Ming Wang, Ting Kuo Chen
  • Publication number: 20100060907
    Abstract: The present invention provides a method and system for on-machine 3-D depth measurement. The same image retrieving apparatus measures the first distance for the width of the similar gray-level region of cutting-surface from the first angle, and measures the second distance for the width of the similar gray-level region of cutting-surface from the first angle superimposing the second angle. The width of the similar gray-level region of cutting-surface comprises the cutting-surface and the shadow of the bottom portion of the cutting-surface. And then the cutting-surface depth is calculated according to the first angle, the second angle, the first distance, and the second distance.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 11, 2010
    Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: Shih-Ming Wang, Han-Jen Yu
  • Publication number: 20100063612
    Abstract: The present invention provides a system and method for the on-machine 2-D contour measurement, employing the contour measurement, coordinate system transformation, error identification, and image matching theory in image processing field to develop the on-machine measurement of X-Y-plan manufacturing error of a micro device manufactured by a high-precision micro-device machine tool, contour error, and trace error.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 11, 2010
    Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: Shih-Ming Wang, Han-Jen Yu