| 摘要 |
PROBLEM TO BE SOLVED: To correct an error in an AD converter and an error caused by elements of a circuit connected to the AD converter.SOLUTION: A signal correction device includes an AD converter 32 for converting a voltage value of a power supply 80 detected by supply voltage detection means 52 or a current value between the power supply 80 and a drive circuit 20 detected by current detection means 50 to a digital signal, and a nonvolatile memory 38 storing beforehand a reference value determined with the supply voltage detection means 52 and the current detection means 50 connected to the AD converter 32. A CPU 36 corrects the digital signal of the current value or voltage value converted by the AD converter 32 on the basis of the reference value stored in the nonvolatile memory 38. |
