Title:
CONTROL DEVICE FOR MATERIAL TESTING MACHINE
Document Type and Number:
Japanese Patent JP3819620
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a control device for material testing machine capable of inserting an integration control element to a feedback loop system to eliminate a steady deviation without causing an abnormal operation.
SOLUTION: At the time of starting application a hydraulic pressure, the output of a P controller 12 is set to be the output of a control element 3 by switches 13, 15. A memory 17 writes the output Es(t) of the control element 3, and a memory 18 writes the output of error Ee(t). When the switches 13, 15 are switching-controlled at time t0, the output of the switch 13 is outputted to an I-controller 14, and the output of the I-controller 14 is outputted to an adder 16 through the switch 15 and set to the output of the control element 3. The memory 17 reads and outputs Es(tp) to a test wave generation part 1. The read output of each memory 17, 18 is held as it is even after the switching.
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Inventors:
Hiroshi Uno
Application Number:
JP34498698A
Publication Date:
September 13, 2006
Filing Date:
December 04, 1998
Export Citation:
Assignee:
Saginomiya Co., Ltd.
International Classes:
G01N3/00; G01N3/34; G01N3/02; (IPC1-7): G01N3/00
Domestic Patent References:
| JP1087235U | ||||
| JP1142438A | ||||
| JP3251734A | ||||
| JP10222206A | ||||
| JP11072422A |
Attorney, Agent or Firm:
Yasuo Asami
Hideo Takahashi
Yoshitaka Takeyama
Hideo Takahashi
Yoshitaka Takeyama
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