| 摘要 |
PURPOSE:To perform smooth and accurate positioning, by using the interrupt signal from an output pulse counter or a timer in the positioning control which switches the mode from a uniform speed mode to a synchronous mode or the like in a prescribed position. CONSTITUTION:Respective set values of sections A-C are defined as SA-SC, and these sections are divided to subsections A1-Cn, and numbers of output pulses in these subsections are defined as a1, a2-cn. Numbers of pulses a1'-a1-1' to be supplied at intervals of a time t0 are calculated on a basis of the inclination of the leading edge and a minimum pulse frequency to determine numbers of output pulses a1-a1-1 in subsections of the leading edge. In the section A, the number of output pulses a1 in the subsection A1 is set to a counter 48, and pulses of an output pulse frequency a' from a pulse generator 47 are counted by the counter 48; and when contents of the counter 48 reach the value a1, the interrupt signal is transmitted from the counter 48 to a processor 41 to perform the operation of the next subsection A2, and a synchronous speed is detected in the subsection A1. In the section B, a set value SB is set to the counter 48, and the time t0 is set to a timer 53; and hereafter, similar operations are performed to perform accurate positioning. |
