Method and apparatus for controlling rotation position

PURPOSE: A method and an apparatus for controlling a position of rotation are provided to stop a controlled object at a desired position in a rotating process by reducing the variation of the stopping distance of the controlled object. CONSTITUTION: A method for controlling a position of rotation includes a variable measuring process(10), a variable comparison process(12), a period decision process(14), and a control value decision process(16). The variable measuring process(10) is to measure a first and a second practical control variables. The variable comparison process(12) is to compare the first practical variable to a predetermined control variable. The period decision process(14) is to decide a predetermined period if the first practical variable is less than the predetermined control variable. The control value decision process(16) is to decide a control value for controlling the controlled object if the predetermined period passes or the first practical variable is more than the predetermined control variable.