Title:
DIFFERENTIAL ELEMENT FOR DIGITAL CONTROLLER
Document Type and Number:
Japanese Patent JPS63261401
Kind Code:
A
Abstract:
PURPOSE:To prevent the generation of a trouble due to a differential retracing phenomenon by finding out a differential term by a differential calculation means and calculating a differential value integrating value by a differential value integrating value calculating means. CONSTITUTION:Restriction on the operation of a differential term D of its own is removed by separating restriction on a differential term D from that on a proportional term P and an integrating term I. Namely, a proportional- integrating term PI is found out by adding the proportional term P obtained by the proportional term calculating means 3 to the integrating term I obtained by an integrating term calculating means 4 through a preadding means 7a. On the other hand, the differential term D is found out by the differential value calculating means 10 and a differential value integrating value DM is calculated by a differential value integrating value calculating means 11. The integrated value DM is added to a proportion-integration manipulated variable SN by an adding means 7 without restricting the upper and lower limits of the integrated value DM to calculate a manipulated variable (m). Prescribed restriction is applied to the found manipulated variable (m) by a restricting means 8 to form an output signal to a digital controller 2.
Inventors:
AKAHA NOBUHISA
ABE AKIRA
ABE AKIRA
Application Number:
JP9430887A
Publication Date:
October 28, 1988
Filing Date:
April 18, 1987
Export Citation:
Assignee:
OKURA DENKI CO LTD
International Classes:
G05B11/36; G05B11/42; (IPC1-7): G05B11/36
Attorney, Agent or Firm:
Reijiro Ichihigashi