| 摘要 |
PURPOSE:To accelevate calculation speed, by trouble shooting by connecting in a single address informations obtained by A/D conversions of a sine wave signals being generated by a body movement detecting apparatus and contrast table of trouble detecting informations. CONSTITUTION:A moving condition of a servo-motor 1 is converted to 2-phase pseudo sine wave signals A, B accompanied by a 90 deg. phase difference by an encoder 2. Outputs A, B of the encoder A, B are converted into digital magnitudes by No.1 and No.2 A/D convertors 3, 4. These signals is led into an address input of a ROM5. A contrast table of trouble detecting informations is stored in the ROM5 and trouble shooting is conducted by contrasting with address in puts. A phase identification apparatus 6 by identifying a direction of the signals A, B and issues pulses for counting to an up-down counter 8. A latch 7 is set when a trouble of the encoder is identified.
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