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Heavy-load closed-loop driving system and method of two-phase hybrid type stepping motor

A stepping motor and drive system technology, applied in control systems, control generators, vector control systems, etc., can solve problems such as weak load capacity

Active Publication Date: 2018-08-24
ZHEJIANG SCI-TECH UNIV
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Problems solved by technology

Although this method improves the accuracy of the motor during operation, it still has the disadvantage of weak load capacity during high-speed operation of the motor, which is limited in practical applications.

Method used

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  • Heavy-load closed-loop driving system and method of two-phase hybrid type stepping motor
  • Heavy-load closed-loop driving system and method of two-phase hybrid type stepping motor
  • Heavy-load closed-loop driving system and method of two-phase hybrid type stepping motor

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Embodiment 1

[0059] Embodiment 1, a heavy-duty closed-loop drive system of a two-phase hybrid stepping motor, including a position hybrid controller 1, a first subtractor 2, a second subtractor 3, a variable coefficient PI regulator 4, and a two-phase SVPWM modulation module 5 , three-phase inverter 6, Clark transformation module 7, leading angle compensation module 8, encoder 9 and two-phase hybrid stepper motor 10;

[0060] Two-phase hybrid stepping motor 10 outputs two-phase actual current i a i b To the Clark transformation module 7, the two-phase hybrid stepper motor 10 outputs the actual feedback position θ of the motor through the encoder 9 fed To the lead angle compensation module 8 and the position hybrid controller 1;

[0061] Clark transformation module 7 according to the input two-phase actual current i a i b , the current component i in the actual static two-phase coordinate system is obtained by calculation αfed i βfed , and the α-axis current component i in the actual ...

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Abstract

The invention provides a heavy-load closed-loop driving system of a two-phase hybrid type stepping motor. The heavy-load closed-loop driving system comprises a position hybrid controller, a first subtracter, a second subtracter, a variable coefficient PI regulator, a two-phase SVPWM modulation module, a three-phase inverter, a Clark conversion module, an advanced angle compensation module, an encoder and the two-phase hybrid type stepping motor. The invention also provides a heavy-load closed-loop driving method of the two-phase hybrid type stepping motor, comprising a realization method of the position hybrid controller, the variable coefficient PI regulator and the advanced angle compensation module. Compared with an open-loop stepping motor driving system, the heavy-load closed-loop driving system does not suffer from a step-out phenomenon, so that accurate motor positioning can be ensured, and higher equipment working speed, lower motor heating and longer service life can be achieved; and in addition, high torque operation still can be maintained in the high-speed movement process.

Description

technical field [0001] The invention relates to a two-phase hybrid stepping motor control system, in particular to a heavy-duty closed-loop drive system and method for a two-phase hybrid stepping motor. Background technique [0002] Two-phase hybrid stepper motors are widely used in 3D printing, electric vehicles, textile machinery, industrial robots and other fields due to their advantages of simple control, precise positioning, and low cost. However, most of the currently used stepper motors are It is mainly based on open-loop control, which has disadvantages such as low-frequency oscillation, low speed, poor load capacity, and out-of-step. In recent years, with the continuous development of power electronics technology and modern industrial application requirements, people have put forward higher requirements (high precision, high response, high load capacity) for the control performance of stepper motors. The existing open-loop control The method can no longer meet the ...

Claims

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Application Information

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IPC IPC(8): H02P8/38H02P21/18
CPCH02P8/38H02P21/18
Inventor 鲁文其吴迪黄培杰王秀锋纪科辉张祯毅
Owner ZHEJIANG SCI-TECH UNIV
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