SU562799A1 - Switch for stepper motor control system - Google Patents

Description

volume 1 and p. to the inputs of the ring-and-reverse 1Sdv1I1gayu1gore reli-str.

The drawing shows the structure of the commutator circuit for the system: we control the stepper junction meter.

The proposed .KOMiMyTaTOip contains a ring roveron shift register, flip-flop 2, elements AND 3, 4, 5, 6, 7, 8, triggers 9 of ring rezervivogo shift register p, a, first sh, And | on W, p & shvia “launch //, tire“ sb. 12 and second bus j3 rearea.

Com: mutato; p works as follows: 30

Information zalisannaya in ring reverse (shift register /, is shifted by one; n bit in two cycles. The separation of input pulses and two cycles is carried out by three years 2 and six elements And 3, 4, 5, 6, 7, 8. In the initial state, the triggers 9 of the two lower digits of the shift register / are in a single state, all other triggers, including the trigger 2, are in the zero state, for information, Idal, measures, B piaeos and the first step. 10 of the reverse, an authorization signal is given for the element: And 5, the enabling signals will also be Il elements 7 and 8. The first impulse, arriving along the busbar, “zausk //, will transfer trigger 2 into one | Neutral state and when elements 1–3 w. 7 are triggered, and the fourth input of the ring reversing shifting register). There will be a shift of units by one bit to the right. The enable signal from the nerve single output of trigger 2 HiOCTynaeT (both elements 5 and b, the second impulse, and the start 11, will trigger trigger 2 into the zero state of the elements triggered by the elements 5 and 5 and the second input of the circular revision shift register 1. Zero shifts will occur on the bit to the right, etc. The potential signals, taken from the linear: triggers of the 9th ring reversible shifting repistor 1, control the powering of the phases of the stepping motor.

Phase switching is achieved by alternating a switch. an even and odd number of adjacent HiiiiH switches.

The phase switching circuit (a sequence of combinations of simultaneously energized windings of a stepper motor) is determined by the initial information recorded in the ring p-power shift register 1. If, in the initial state, the unit is recorded in one of the lower-order trigger

ring reversing shift repistr, the phase switching is carried out according to scheme 1-2; when recording the unit at two lower digits, we obtain a scheme 2-3, etc. The presence of a trigger 2 and the curvature of the elements AND In addition, when the number of phases of a stepper motor provides 2 / n-cycle switching, the bus outputs are excited according to the selected scheme 1-2, 2-3, etc. In addition, a similar construction of the switch circuit allows changing the number of bits Dvd shift register from 3 to n bits without changing the log ik of operation of the circuit, which provides the ability to control stepper motors with the number of phases 3, 4, 5, 6, etc.

Claims (3)

1. ChiliKI | M.S.N. Discrete electric drive with stepper motors. M., “Energie, 1971, p. 220-226. 2. Patent of the USA No. 3614580, cl. 318-696, 1971. 3. USSR author's certificate L 437051, cl. G 05 B 21/01, 12.04.72.