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DSP-based electric machine position servo device

A servo device, motor position technology, applied in position/direction control, single motor speed/torque control, electronic commutator and other directions, can solve the problems of electromagnetic interference maintenance, small output torque, short life, etc. Spark interference, high reliability, long life effect

Inactive Publication Date: 2007-05-02
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] A brushed DC motor has a rotating armature and a fixed magnetic field, so a brushed DC motor must have a sliding contact mechanism - a brush and a commutator, through which current is fed to the rotating armature so that at a certain Under the magnetic pole, the conductor is constantly replaced, and the polarity of the applied voltage remains unchanged, which causes the brush motor to have disadvantages such as commutation sparks, short life, small output torque in a locked-rotor state, electromagnetic interference, and inconvenient maintenance.

Method used

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  • DSP-based electric machine position servo device
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  • DSP-based electric machine position servo device

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing, the present invention is further described as follows:

[0032] 1, the present invention includes a brushless DC motor and a control circuit, the control circuit includes a digital signal processor U1, a programmable logic device U2, a memory U3, a communication interface U4, an analog output U5, a PWM output U6, a filter U9, Display board U10, encoder interface U11, Hall feedback interface U12, feedback current interface U13, photoelectric isolation interface U20, current Hall detection U21, surge voltage control U22, voltage detection U23, status feedback U24, IPM intelligent power module U30 , rectifier module U31 and transformer module U32, digital signal processor U1 is connected to programmable logic device U2, memory U3, communication interface U4, analog output U5, filter U9 and display board U10, analog output U5 is connected to external analog equipment , the communication interface U4 is connected to an external...

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Abstract

A servo device of motor position based on DSP consists of brushless DC motor being used as servo motor as its servo device being suitably set on digital control system requiring position control response quickly, control circuit being designed independently by DSP and programming logic component for realizing closed loop servo control of current loop and speed loop as well as position loop.

Description

(1) Technical field [0001] The invention relates to a motor position servo device, in particular to a DC brushless motor position servo device. (2) Background technology [0002] A brushed DC motor has a rotating armature and a fixed magnetic field, so a brushed DC motor must have a sliding contact mechanism - a brush and a commutator, through which current is fed to the rotating armature so that at a certain Under the magnetic pole, the conductor is constantly replaced, and the polarity of the applied voltage remains unchanged, which causes the brush motor to have disadvantages such as commutation sparks, short life, small output torque in a locked-rotor state, electromagnetic interference, and inconvenient maintenance. The brushless DC motor is just the opposite of the former. It has a rotating magnetic field and a fixed armature. The power switching elements such as transistors or thyristors in such an electronic commutation circuit can be directly connected to the armatu...

Claims

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Application Information

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IPC IPC(8): G05D3/00G05D3/12H02P6/08H02P6/16H02P6/28
Inventor 刘胜李冰姜繁生
Owner HARBIN ENG UNIV
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