パルス式自動平衡形計重機の研究

抄録

In this paper, automatic beam scale with a pulse motor (stepping motor) is proposed, and the analysis of the system is shown with the experimental results.
Automatic beam scales of self-balancing type are widely used in industry for their high accuracy. However, the measuring time is comparatively long with the scales of this type. Consequently, they are not used as equipment for continuous measurement that requires their fast response.
By the use of a pulse motor as actuator and of an electronic controller, the response time of an automatic beam scale is considerably improved, and digital output signals are easily obtained, because the automatic scale proposed operates as an A-D converter.
The experiments are performed with two scales, one having an accuracy of 1/1000 and the other 1/8000. The experimental results have good correlations with the computation, and it is confirmed that the automatic scales proposed in this paper have excellent performances.