Patents by Inventor Lim Sang-Gwon

Lim Sang-Gwon 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).

  • Limiter circuit of servo motor control apparatus
    Patent number: 5231341
    Abstract: A limiter circuit of a servo motor control apparatus can perform limiter control in the right direction or reverse, direction or in both directions of a motor therefore. There is provided a microprocessor for outputting a switching signal by receiving rotating direction data from a motor rotating direction setter, and a converter for digital to analog converting the instantaneous limit value outputted from the microprocessor. Also included is a switching portion for selecting the output of instantaneous limit value outputted from the converter, and a limiter for limiting the amplitude the control voltage outputted the PID controller to within the scope of the instantaneous limit value selected according to the switching operation of the switching portion.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: July 27, 1993
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Lim Sang-Gwon