Weighing scales – Self-positioning – Repositioning in response to deflection under load
Patent
1978-08-29
1980-02-19
Hartary, Joseph W.
Weighing scales
Self-positioning
Repositioning in response to deflection under load
177210EM, G01G 700
Patent
active
041890175
ABSTRACT:
An improved weighing apparatus of the electromagnetic load compensation type is disclosed, including a correction loop connected between the output terminal of the synchronizer and the input terminal of the pulse length modulator for varying the regulated load signal from the PID regulator to produce a corrected regulated load signal which compensates for digitalization errors produced by the synchronizer. In one embodiment, the correction loop includes an integrator circuit for superposing on the regulated load signal an inverted integrated error voltage the magnitude of which is a function of the operation of the synchronizer relative to the mark signals. In a second embodiment, the correction loop includes an integrator circuit that periodically applies to the regulated load signal a constant reference voltage of opposite polarity. Preferably, the reference voltage is applied simultaneously with the periods of supply of the compensation current.
REFERENCES:
patent: 3786678 (1974-01-01), Kunz
patent: 3786883 (1974-01-01), Kunz
patent: 3786884 (1974-01-01), Allenspach
patent: 3816156 (1974-06-01), Baumann
patent: 3986571 (1976-10-01), Strobel
patent: 4062417 (1977-12-01), Kunz
Stocker Rudolf
Strobel Felix
Zumbrunn Werner
Hartary Joseph W.
Laubscher Lawrence E.
Mettler Instrumente AG
LandOfFree
Weighing apparatus including digitalization error correcting mea does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Weighing apparatus including digitalization error correcting mea, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weighing apparatus including digitalization error correcting mea will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-649528