Title:
PROCESS CONTROLLER
Document Type and Number:
Japanese Patent JPH04358201
Kind Code:
A
Abstract:
PURPOSE:To improve the stability of a system by considerably improving the precision of analog signals outputted from a D/A converter without increasing the number of the bits of the D/A converter, etc. CONSTITUTION:A process part 4 executes digital operation based on a process input signal and when the output destination of a digital output value obtained by this arithmetic operation is a D/A converter 7, a value to be periodically changed with prescribed bit width is added to the digital output value. Based on this added result, a rounding operation is executed and the obtained digital output value is supplied to the D/A converter 7, converted to the analog output signal and outputted to a control object side.
Inventors:
AIDA YASUSHI
Application Number:
JP13250391A
Publication Date:
December 11, 1992
Filing Date:
June 04, 1991
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
G05B11/36; G06F3/05; (IPC1-7): G05B11/36; G06F3/05
Attorney, Agent or Firm:
Hidekazu Miyoshi (4 outside)