| 摘要 |
PROBLEM TO BE SOLVED: To control a plurality of means to be controlled, such as a compressor motor inverter, a blower motor inverter, a power-factor improvement circuit, and a switching power supply circuit, with a single arithmetic and control means. SOLUTION: This arithmetic and control unit consists of a plurality of means 2, 3, 4, 5 to be controlled, and an arithmetic and control means 6 for controlling the driving of the means to be controlled individually respectively. By setting pulse width modulation signals controlling a plurality of means 2, 3, 4, 5 to be controlled to the frequency of 1 to 1 or integer ratio, it is possible for the arithmetic and control means 6 to eliminate the shortage of processing time for the arithmetic and control means 6, and to control the driving of a plurality of elements to be controlled with high efficiency using the single arithmetic and control means 6, and with high precision while keeping coordination between the means to be controlled. |
