| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of velocity ratio control capable of accurate velocity ratio. SOLUTION: In a controller, a velocity setting unit 2 for setting the velocity of a main motor 10, a draw setting unit 4 for setting the velocity ratio of the main motor 10 and a sub-motor 20, and position detecting means 11 and 2 for detecting the rotational positions of the main motor 10 and the sub-motor 21 are provided. A controller generates the position command of the main motor 10 and the sub-motor 20, to make the velocity ratio of the main motor 10 and the sub-motor 20 stationary under control. In this case, the signal of rotational position of the main motor 10 is multiplied by the signal of the draw setting unit 4, and this is compared with a rotational position signal of the sub-motor 20, and a difference thereof is entered as an input to a PI controller 5 to generate an output. The output is added to the revolution command of the sub-motor 20, after the revolution commend is calculated by multiplying the velocity setting unit 2 and the signal of the draw setting unit 4. |
