Title:
MOVING AVERAGE ARITHMETIC SYSTEM
Document Type and Number:
Japanese Patent JPH03240107
Kind Code:
A
Abstract:
PURPOSE:To shorten the operating time despite the increase of an average period by performing the addition of data within a prescribed average period by adding the data collected this time to the accumulated value stored in a memory and substracting the oldest collected data from the accumulated value respectively. CONSTITUTION:When an instruction is executed, the oldest value data is deleted out of a data table 7a, the data PVN collected this time is added to the head of the table 7a. The data PVN is added to the memory 7c integrating the data every 12 times for acquisition of the integrated value A. Then the data PVN is added to a memory 7b storing the accumulated value of data equivalent to 12 pieces, and the data PVN - 12 precedent by 12 times is subtracted from the value of the memory 7b for acquisition of the new accumulated value S. The value S of the memory 7b is replaced with the value A containing no error every time the instructions are executed by 12 times. Hereafter an instruction executing frequency counter C is counted up and the value S is divided by 12 pieces of collected data. The solution of this division is stored in a floating accumulator 13. Thus the arithmetic time is shortened despite the increase of a data collecting period.
Inventors:
WADA KAZUHIRO
Application Number:
JP3663690A
Publication Date:
October 25, 1991
Filing Date:
February 17, 1990
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G05B21/02; (IPC1-7): G05B21/02
Attorney, Agent or Firm:
Kenji Yoshida (2 outside)