Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1998-08-13
2000-08-08
Noori, Max
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
G01N 332
Patent
active
060984651
ABSTRACT:
A material testing machine includes a control system which, during material testing, feedback-controls the operation of a servo system which includes an actuator for applying a load to a test piece, such that the actual load applied to the test piece coincides with the target load. The testing machine includes a waveform generator for generating a testing waveform indicative of the target load. The waveform generator includes a waveform data memory which stores therein a series of basic signal values sampled from a basic waveform so as to pick up a characteristic of the basic waveform. During the material testing, each of the basic signal values is repeatedly read out from the data memory, whereby the testing waveform indicating the target load is generated based on these basic signal values. An error between the controlled variable and the target load is determined based on peak and bottom values of the controlled variable, and the target load is corrected in accordance with the determined error, to thereby improve the responsiveness of the servo system.
REFERENCES:
patent: 3664179 (1972-05-01), Danko et al.
patent: 4176396 (1979-11-01), Howatt
patent: 5299459 (1994-04-01), Underwood
patent: 5406842 (1995-04-01), Locke
Patent Abstracts of Japan, JP 03 248033 A, Jan. 31, 1992, vol. 016, No. 042.
Patent Abstracts of Japan, JP 09 138188 A, Sep. 30, 1997, vol. 1997, No. 09.
Patent Abstracts of Japan, JP 09 203700 A, Dec. 25, 1997, vol. 1997, No. 12.
PatentAbstracts of Japan, JP 59 182603 A, Feb. 22, 1985, vol. 009, No. 043.
Patent Abstracts of Japan, JP 63 241443 A, Feb. 3, 1989, vol. 013, No. 047.
Kamio Susumu
Kotou Tatsuyoshi
Matsumoto Masayuki
Takahashi Nobunari
Japan Tobacco Inc.
Noori Max
LandOfFree
Material testing machine including a control system for feedback does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Material testing machine including a control system for feedback, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Material testing machine including a control system for feedback will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1139327