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A speed adaptive control method of DC brushless motor

A DC brushless motor, adaptive control technology, applied in the direction of single motor speed/torque control, control purpose model/simulation, etc., can solve the problems that cannot meet the complex production process and high-precision control, and achieve good control performance Effect

Active Publication Date: 2021-08-31
深圳市诺必成电子有限公司
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Problems solved by technology

[0003] However, the brushless DC motor is a high-order nonlinear uncertain system, and its control is affected by uncertain factors such as motor parameter changes, external disturbances, and non-modeled dynamics, making conventional feedback control unable to meet complex production processes and The need for high-precision control

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  • A speed adaptive control method of DC brushless motor
  • A speed adaptive control method of DC brushless motor
  • A speed adaptive control method of DC brushless motor

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, and the implementation scope of the present invention is not limited thereto.

[0028] Such as figure 1 As shown, a method for adaptively controlling the speed of a brushless DC motor described in this embodiment includes the following steps:

[0029] S1: For an N ∑ order system, the excitation signal must have N ∑ frequency components, where the motor identification excitation voltage signal v is designed through guiding principles qs , can improve the identification quality, the motor identification excitation voltage signal v qs By designing pseudo-random binary sequence generation, the irrelevance and maximum robustness of the excitation signal are guaranteed;

[0030] S2: Then identify the excitation voltage signal v through the motor qs Simultaneous identification of current loop model parameters [a c1 ,b c0 ] and speed loo...

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Abstract

The invention discloses a method for self-adaptive control of the rotational speed of a DC brushless motor, which includes the following steps: S1: designing the motor identification excitation voltage signal v through guiding principles qs , motor identification excitation voltage signal v qs Generated by designing a pseudo-random binary sequence; S2: Identify the excitation voltage signal v through the motor qs Simultaneous identification of current loop model parameters [a c1 ,b c0 ] and speed loop model parameters [a s1 ,b s0 ], the current loop model is: the speed loop model is: S3: the current loop model parameters obtained by identification [a c1 ,b c0 ] and speed loop model parameters [a s1 ,b s0 ], to configure the speed and current controller, so as to generate a new motor identification excitation voltage signal v qs ; S4: Repeat the steps from S2 to S3, constantly correct the current loop model and the speed loop model, so that the current loop model and the speed loop model are more and more accurate, and then enter the normal working stage of the speed current controller; through the control method of the present invention Realize self-adaptive control, which can meet the needs of complex production process and high-precision control.

Description

technical field [0001] The invention relates to the technical field of DC brushless motor control, in particular to an adaptive control method for the rotational speed of a DC brushless motor. Background technique [0002] Brushless DC motor has the advantages of high efficiency, high power density, high torque inertia ratio, etc. It is one of the most competitive drive motors and is widely used in high-performance drive systems; The electric drive control system has become a mainstream direction of the development of the motion control system, has received great attention at home and abroad, and is an important means of implementing motor energy-saving projects. [0003] However, the brushless DC motor is a high-order nonlinear uncertain system, and its control is affected by uncertain factors such as motor parameter changes, external disturbances, and non-modeled dynamics, making conventional feedback control unable to meet complex production processes and The need for hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/08H02P6/34
Inventor 耿涛钟伟万利华
Owner 深圳市诺必成电子有限公司
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