| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive pressure control device for improving the accuracy of the output pressure of a pressure control valve. SOLUTION: The pressure control device comprises the plurality of pressure control valves 1a-1c for supplying output pressure whose air pressure is regulated from a pressure supply source 2 to works 3a-3c, and a control part 11 for supplying control signals sg1-sg3 to the pressure control valves 1a-1c to regulate the output pressure. One pressure sensor 13 detects the output pressure of each of the pressure control valves 1a-1c and outputs the detection signal to the control part 11, and selecting devices 12a-12c select the output pressure of one of the pressure control valves 1a-1c in accordance with selection signals sg4-sg6 output from the control part 11 and outputs it to the pressure sensor 13. The control part 11 outputs control signals sg1-sg3 to regulate the output pressure of the pressure control valves 1a-1c selected by the selection signals sg4-sg6 in accordance with the detection signal output from the pressure sensor 13. COPYRIGHT: (C)2006,JPO&NCIPI
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