Title:
AC SERVO SYSTEM
Document Type and Number:
Japanese Patent JPS58144587
Kind Code:
A
Abstract:
PURPOSE:To shorten the actual calculating time by employing a data table for the calculation of a motor current command in an AC servo system. CONSTITUTION:The current peak instruction value which is read out from a current data table 31 of a current data output device 30 is converted by a D/A converter 23 to an analog value, and inputted through a subtractor, an amplifier 24 and an A/D converter 25 to a multiplier 70. The multiplier 70 multiplies the input by the sinusoidal signal from a sinusoidal wave forming circuit 60. The output of the multiplier 70 is applied to a D/A converter 27, which produces an analog motor current command. A feedback device 80 obtains the position and speed data from the output of a resolver 28 and inputs them to a CPU1.
Inventors:
NAKANISHI YOSHINORI
Application Number:
JP2573482A
Publication Date:
August 27, 1983
Filing Date:
February 19, 1982
Export Citation:
Assignee:
TOSHIBA MACHINE CO LTD
International Classes:
H02P27/06; H02P21/00; H02P21/22; H02P21/36; H02P23/07; H02P23/16; H02P23/20; H02P23/22; H02P25/026; H02P27/08; (IPC1-7): H02P5/28
Attorney, Agent or Firm:
Azusa Yuzo