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Stepper motor drive device based on CAN bus

A CAN bus, stepper motor technology, applied in the field of stepper motor drive devices, can solve the problems of inability to precise displacement, low inherent resolution of stepper motors, limiting the application range of stepper motors, etc., to eliminate resonance points, improve Electrical characteristics, the effect of solving the problem of low frequency oscillation

Inactive Publication Date: 2010-12-15
沈阳新松智能驱动有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The inherent resolution of the stepper motor is not high, and it cannot be precisely displaced
Taking the most widely used 8-pole 50-tooth two-phase hybrid stepping motor as an example, its step angle is 0.9° / 1.8°, and it needs to cooperate with a mechanical deceleration mechanism to achieve the required pulse equivalent accuracy. However, the increase in the mechanical system It also introduces a source of error
[0008] Oscillation and overshoot problems of stepper motors at low frequency operation severely limit the application range of stepper motors

Method used

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  • Stepper motor drive device based on CAN bus
  • Stepper motor drive device based on CAN bus
  • Stepper motor drive device based on CAN bus

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Embodiment Construction

[0031] Below through specific embodiment and in conjunction with accompanying drawing, this utility model is described in further detail.

[0032] Such as figure 1 As shown, the power supply part of the CAN bus-based stepper motor drive device includes a filter circuit 10-1, a voltage conversion module 10-2, a voltage stabilizing circuit A 10-3, and a stabilizing circuit B 10-4. The input power is filtered by the filter circuit 10-1 and then input to the voltage conversion module 10-2, and the voltage conversion module outputs a 5V DC voltage for powering the active components of the circuit; the 5V DC voltage passes through the voltage stabilizing circuit A 10 -3 and the voltage stabilizing circuit B 10-4 output voltages of 3.3V and 1.8V to the central processing unit 1 respectively. The input voltage of the voltage conversion module 10-2 can be up to 40V, so that the driving device can be used for stepping motors of different voltage levels. Such as figure 2 As shown, th...

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Abstract

The invention discloses a stepper motor drive device based on a CAN bus. The stepper motor drive device comprises a central processing unit, a chopped wave constant current drive circuit, a drive control circuit and a current detection circuit, wherein the central processing unit is connected with a CAN bus interface circuit, an LED indicating circuit, an AD conversion circuit and a keyboard scanning circuit; the chopped wave constant current drive circuit is communicated with a central processor; the output of the chopped wave constant current drive circuit is connected with the drive control circuit of a stepper motor; the input of the drive control circuit is communicated with the central processor and receives an output signal of the chopped wave constant current drive circuit; the output of the drive control circuit is connected with a two-phase stepper motor; the current detection circuit receives the output signal of the drive control circuit and outputs the output signal to the chopped wave constant current drive circuit; and the output end of the current detection circuit is respectively connected with the central processor and the drive control circuit. The stepper motordrive device has the characteristics of realizing no declining of output torque along with the rise of rotational speed and having high resolution and wide application range and also has the advantages of low cost, strong antijamming capacity, abundant selectable resource and good technology and competitiveness.

Description

technical field [0001] The invention relates to the application technology of a stepping motor system in a digital control system, in particular to a stepping motor driving device based on CAN bus. Background technique [0002] With the wide application of stepper motor systems in various digital control systems, the requirements of various digital control systems are getting higher and higher with the performance and service conditions of stepper motors. This requires continuous development of high-performance, high-reliability, high-integration, low-cost drivers to meet the needs. As we all know, domestic research on this aspect has been very active, but there are few high-performance stepping motor drivers available for selection, and domestic drivers basically have large volume, irregular dimensions, unstable performance indicators and It is far from achieving serialization and other problems, which brings great inconvenience to the selection and installation of the dri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418G05D3/12H02P8/14
CPCY02P90/02
Inventor 贾凯张进东陈为廉郑春晖魏辉
Owner 沈阳新松智能驱动有限公司
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