Unlock instant, AI-driven research and patent intelligence for your innovation.

Stepping motor driving circuit

A stepper motor and drive circuit technology, applied in the direction of single motor speed/torque control, etc., can solve the problems of large running noise, inability to realize high-speed drive, poor low-frequency performance, etc., and achieve reduced running noise, excellent high-speed performance, and improved performance effect

Inactive Publication Date: 2008-04-09
上海博显实业有限公司
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above two driving methods have their inherent defects: the full-step or half-step driving has poor low-frequency performance, is prone to low-frequency oscillation, and has high operating noise. Although the fixed subdivision driving can significantly improve the low-frequency driving performance, the High-speed drive cannot be achieved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stepping motor driving circuit
  • Stepping motor driving circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] As shown in Figure 2, the embodiment of the stepper motor drive circuit of the present invention, taking two-phase stepper motor as example, its core is a single-chip microcomputer control system, this single-chip microcomputer control system is connected with the driver main circuit 8 of stepper motor, accepts The output signals of the external photoelectric isolation circuit 1 and the subdivision mode magnification selector 9 are processed. The single-chip microcomputer control system includes an automatic subdivision control processing unit 3, a current halving processing circuit 4, a stepping pulse generating circuit 7, an input pulse interval detection circuit 2, A-phase D / A (digital / analog) signal conversion modules 5 and B Phase D / A signal conversion module 6 .

[0015] The subdivision mode magnification selector 9 is an externally set subdivision mode magnification selection, which determines whether the subdivision mode is external subdivision pulse input or in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention includes a single-chip control system, a main control circuit of drive connected to the single-chip control system, a photoelectrical buffer circuit and a subdividing magnification selector. The single chip control system comprises a current halfing circuit, step by step impulse generating circuit, input pulse interval testing circuit, multi D / A converters and an automatically subdividing control circuit. Under the control of single-chip control system, the switching between full step mode and subdividing mode can be seamlessly completed, and the subdivision automatically switching can implemented in interior.

Description

technical field [0001] The invention relates to a stepper motor drive circuit, especially its external control signal is the same as that of a common full-step or half-step drive, but its interior can intelligently distinguish the frequency of the external input control pulse, and the interior is set to automatically subdivide, finely Sub-pulse magnification is automatically switched. The stepper motor drive circuit is especially suitable for high-speed drive circuits with higher requirements. Background technique [0002] The existing stepping motor has inherent oscillation phenomenon in some low-frequency bands. The reason is that when the motor rotor accelerates under the action of the magnetic field force, when the rotor turns to a new equilibrium point, its speed is still relatively high, so that The rotor rushes through the balance point, resulting in an overshoot. Due to the existence of the magnetic field torque, the rotor is pulled back to the balance point, formin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/08
Inventor 朱惠忠
Owner 上海博显实业有限公司