| 摘要 |
PROBLEM TO BE SOLVED: To inhibit the fluctuation of an operating angle by setting and outputting the driving current on the basis of the reaction torque equivalent current acting on a control shaft from an engine side and operated on the basis of a cam angle of a cam shaft operated on the basis of the number of revolution of the engine, and the operated current control amount. SOLUTION: As the reaction torque is synchronized with a cam angle of a cam shaft, a calculated value of the reaction torque to the cam angle is stored in a reaction torque equivalent current operating means B7 in advance. The reaction torque at that time can be immediately judged on the basis of the cam angle of the cam shaft operated by the cam angle operating means B6 on the basis of the detected number of revolutions of the engine, and the reaction torque equivalent current value can be easily determined on the basis of the reaction torque. The necessary current control amount operated by a current control operating means B5 is corrected on the basis of the reaction torque equivalent current value to make a target control shaft operating angle determined by a target operating angle operating means B3 on the basis of the number of revolutions of the engine and the engine load agree with the control shaft actual operating angle detected by a operating angle detecting means B4, and the driving current to a DC servo motor is determined and output to a PWN output determining means B8.
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