| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high-quality control performance, by providing a means for so altering a control period as to make constant the time difference between the initiating times of a serial communication and control processing for transmitting control informations between two microprocessors. SOLUTION: In this controller, in order to synchronizing with each other processings between two different microprocessors, there is employed a system for synchronizing with each other respective processings by using as an axis the timing of a serial communication. A delay circuit 51 is provided to a start a communication interface after a fixed delay from the generation of the start interruption timing signal for a control processing. In a power feeding portion, in order to monitor the time difference between the generation time of the interruption signal for starting a current control processing and the initiating time of the serial communication, when initiating the serial communication, a reception initiating signal is outputted from a communication interface 24-2 to latch the count value of a counter 31-2 by a latch circuit 52. Then, the latched time difference data is taken in a MPU 21-2 to use it for adjusting a control period. As a result, a high-quality control characteristic is obtained. |
