Crossed coil meter driving device having a plurality of input pa

Details Crossed coil meter driving device having a plurality of input pa Crossed coil meter driving device having a plurality of input pa

1990-12-11

1991-09-24

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural active motor elements

324140R, 324160, 324167, G01R 1136, G01P 348

Patent

active

050516884

ABSTRACT:
A meter driving device for indicating angular positions corresponding to input values. The device includes a memory for storing previously given input values, angular directions corresponding to the input values, and coefficients representative of the grades of change in angular direction depending on the change between adjacent two input values, as parameters. Based on these parameters and the frequency of input pulse signal giving the input values, the angular direction corresponding thereto is calculated. The angular direction signal receives PWM process and then supplies to a pair of crossed exciting coils via a driver. During a predetermined time period from the turning ON and OFF of the power source, the transference of the angular direction signals to the driver is shut out by logic gates, thereby inhibiting malfunctional meter indication.

REFERENCES:
patent: 4827209 (1989-05-01), Tanaka et al.
patent: 4928060 (1990-05-01), Ito

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