Sequencing System for a Stepper Motor
Original Publication Date: 1986-May-01
Included in the Prior Art Database: 2005-Mar-09
A method is described for generating a cyclical sequence of control signals for a stepper motor. The data for the sequence is stored in a table so that the current state of the stepper motor is used as the address for the next state. Assume that the desired stepping sequence for a four-phase stepper motor is as set forth in Column 1 in the table of Fig.1. Assume further that the sequence is cyclical and reversible. Column 2 represents the HEX value of the binary signal supplied to the stepper motor driving circuit. Columns 1 and 2 are referred to as "states" of the stepping sequence. Columns 3, 4, and 5 together represent a data table, where Column 3 is the address of the location containing the pair of HEX characters in Columns 4 and 5.