| 摘要 |
PROBLEM TO BE SOLVED: To change over a failure control system for a multiple-coil servo valve to be reset during operation without impairing the stable operation of the multiple-coil servo valve. SOLUTION: The multiple-coil servo valve control device comprises the multiplex control system consisting of a plurality of controllers 31-33 for generating control command values for driving currents in a plurality of servo coils for driving the servo valve and a plurality of servo amplifiers 18-20 for controlling the driving currents in the servo coils in accordance with differences between each of the control command values output from the controllers and a servo valve position detection feedback value 27. A bumpless resetting means 63 is provided on the output stage of each of the controllers. The bumpless resetting means 63 inputs the control command value 26a and the servo valve position detection feedback value 27. When a failure of the self control system is restored and a resetting command 55 is input to the multiplex control system, the servo valve position detection feedback value 27 at inputting the resetting command is used as an initial value in outputting a value which is gradually changed into the control command value 26a. COPYRIGHT: (C)2005,JPO&NCIPI |
