When dot-sequential data indicating a temporal variation in position,
speed, or acceleration is stored in a memory in an automated guided
vehicle as it is, the capacity of the memory is insufficient and thus
needs to be increased. A pattern is mounted in a stacker crane 1; the
pattern is drawn by dot-sequential data indicating a temporal variation
in acceleration (FIG. 2C), and corresponds to an instruction value
provided to an actuator installed in the stacker crane 1. In this case, a
curve function corresponding to an approximate expression for the
dot-sequential data is derived in a form of a Fourier series having a
finite number of terms and using time as an independent variable and the
position, speed, or acceleration as a dependent variable. Data
identifying the Fourier series, having a finite number of terms, is
stored in a memory 5 mounted in the stacker crane 1.