| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain high controllability and high reliability in a control device for electronically controlling a controlled part by correcting the time precision with ambient temperature changes of an oscillator used for obtaining a device internal reference time for determining a control cycle. <P>SOLUTION: This control device comprises a control circuit 10 for controlling the controlled part according to the control cycle based on the device internal reference time generated by a device internal reference time generation means 12, wherein the device internal reference time is determined according to the resonance frequency of the oscillator connected to the device internal reference time generation means 12. This device further comprises an ambient temperature measurement means 19 for measuring the ambient temperature of the oscillator 30. Temperature error correction data for correcting a change in resonance frequency by the ambient temperature of the oscillator 30 are stored in an electrically rewritable nonvolatile memory 20, and a device internal reference time correction means 14 corrects the device internal reference time by use of the temperature error correction data. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
