Patents by Inventor Tsu-Min Liu

Tsu-Min Liu 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).

  • Patent number: 10381888
    Abstract: A motor driving method is applied to a motor with a rotor comprising a magnetic reluctance structure. The motor driving method comprises enabling the motor by an asynchronous driving method, controlling the motor by the asynchronous driving method according to a speed regulation command, detecting a rotor speed of the motor and determining whether the rotor speed is larger than a speed threshold, and when the rotor speed is larger than the speed threshold, controlling the motor by a synchronous driving method.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: August 13, 2019
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Ming-Mao Hsu, Yu-Yuan Chen, Tsu-Min Liu
  • Patent number: 10367394
    Abstract: An elastic actuator is provided, which may include a position motor and an electromagnetic spring. The position motor may include a motor output shaft. The electromagnetic spring may include a rotor, a stator and a gear set. The stator may drive the rotor to rotate. The gear set may include a first output shaft, a second output shaft and an output shaft; the first input shaft may connect the motor output shaft, and the second input may connect to the rotor. The power generated by the rotor and the power generated by the position motor may be outputted from the output shaft after being coupled via the gear set.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: July 30, 2019
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Han-Ping Yang, Chau-Shin Jang, Jih-Yang Chang, Hsin-Tien Yeh, Tsu-Min Liu
  • Publication number: 20190190327
    Abstract: A motor driving method is applied to a motor with a rotor comprising a magnetic reluctance structure. The motor driving method comprises enabling the motor by an asynchronous driving method, controlling the motor by the asynchronous driving method according to a speed regulation command, detecting a rotor speed of the motor and determining whether the rotor speed is larger than a speed threshold, and when the rotor speed is larger than the speed threshold, controlling the motor by a synchronous driving method.
    Type: Application
    Filed: December 21, 2017
    Publication date: June 20, 2019
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Ming-Mao HSU, Yu-Yuan CHEN, Tsu-Min LIU
  • Publication number: 20180019639
    Abstract: An elastic actuator is provided, which may include a position motor and an electromagnetic spring. The position motor may include a motor output shaft. The electromagnetic spring may include a rotor, a stator and a gear set. The stator may drive the rotor to rotate. The gear set may include a first output shaft, a second output shaft and an output shaft; the first input shaft may connect the motor output shaft, and the second input may connect to the rotor. The power generated by the rotor and the power generated by the position motor may be outputted from the output shaft after being coupled via the gear set.
    Type: Application
    Filed: November 4, 2016
    Publication date: January 18, 2018
    Inventors: HAN-PING YANG, Chau-Shin Jang, Jih-Yang Chang, Hsin-Tien Yeh, Tsu-Min Liu
  • Patent number: 8567893
    Abstract: An embodiment of a print signal generation system is provided. The system comprises a sensor, a divisor processing unit, a reference signal generator, and a print trigger signal generator. The sensor detects a first offset of a first location of a medium being printed. The divisor processing unit generates a first divisor according to the first offset and a predetermined divisor. The reference signal generator generates a reference signal. The print trigger signal generator generates a print trigger signal according to the first divisor and the reference signal.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: October 29, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Po-Chun Yeh, Chia-Ming Chang, Hung-Pin Shih, Tsu-Min Liu
  • Patent number: 7891752
    Abstract: An Inkjet apparatus is provided. An Inkjet apparatus includes a piezoelectric inkjet print head, a plurality of driving unit, a detection unit and a control unit. The piezoelectric inkjet print head comprises a plurality of nozzles, wherein each the nozzle outputs an ink drop according to a driving voltage. The driving unit generates the driving voltage according to a control signal. The detection unit detects a state of the ink drop corresponding to the nozzle to generate a detection signal. The control unit generates the control signal to control the driving voltage according to the detection signal.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: February 22, 2011
    Assignee: Industrial Technology Research Institute
    Inventors: Tsu-Min Liu, Jeng-Han Lee, Chieh-Yi Huang, Chia-Ming Chang, Chao-Kai Cheng, Yuh-Zheng Lee
  • Publication number: 20100225686
    Abstract: An embodiment of a print signal generation system is provided. The system comprises a sensor, a divisor processing unit, a reference signal generator, and a print trigger signal generator. The sensor detects a first offset of a first location of a medium being printed. The divisor processing unit generates a first divisor according to the first offset and a predetermined divisor. The reference signal generator generates a reference signal. The print trigger signal generator generates a print trigger signal according to the first divisor and the reference signal.
    Type: Application
    Filed: January 21, 2010
    Publication date: September 9, 2010
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Po-Chun Yeh, Chia-Ming Chang, Hung-Pin Shih, Tsu-Min Liu
  • Publication number: 20090073205
    Abstract: An Inkjet apparatus is provided. An Inkjet apparatus includes a piezoelectric inkjet print head, a plurality of driving unit, a detection unit and a control unit. The piezoelectric inkjet print head comprises a plurality of nozzles, wherein each the nozzle outputs an ink drop according to a driving voltage. The driving unit generates the driving voltage according to a control signal. The detection unit detects a state of the ink drop corresponding to the nozzle to generate a detection signal. The control unit generates the control signal to control the driving voltage according to the detection signal.
    Type: Application
    Filed: March 26, 2008
    Publication date: March 19, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Tsu-Min Liu, Jeng-Han Lee, Chieh-Yi Huang, Chia-Ming Chang, Chao-Kai Cheng, Yuh-Zheng Lee