| 摘要 |
PURPOSE:To enable an unbalanced point of an object to be measured to be brought to a stop at a given position, by a method wherein, when the number of counts of an angle signal from a preset counter coincides with the number of presets through acceleration of a speed of an object to be measured, a drive motor is brought to stop running. CONSTITUTION:By means of signals from a tachometer 3 and a voltage feed circuit 7, rotation of a motor 2 for driving an object 1 to be measured is controlled, in order, to start, accelerate, run at a constant speed and accelerate it. After starting of a deceleration control, an angle signal of a rotary encoder 11, which outputs a unit angle by means of a signal from a rotation angle generating means including a pickup 12, is inputted to a preset counter 20, and when the number of counts coincides with a preset number, the motor 2 is brought to stop running through the working of a control circuit 9. This permits the unbalanced point of the object 1 to be measured to stop at a given position with neither marking nor sensor, and permits the improvement of precision and rapidity. |
