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Control method of road sense simulated permanent magnet synchronous motor based on active disturbance rejection control

A technology of permanent magnet synchronous motor and active disturbance rejection control, which is applied to the control of generators, motor generators, and electromechanical brakes. It can solve the problems of road feeling lag and hand force fluctuation, and achieve smooth road feeling and increase compensation. The effect of degree, feel and real-time road feeling

Inactive Publication Date: 2021-04-02
XIAN UNIV OF TECH
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Problems solved by technology

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a road sense simulation permanent magnet synchronous motor control method based on active disturbance rejection control, which solves the road sense hysteresis and manual motion that may be caused by the existing method in road sense simulation. The problem of force fluctuations

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  • Control method of road sense simulated permanent magnet synchronous motor based on active disturbance rejection control
  • Control method of road sense simulated permanent magnet synchronous motor based on active disturbance rejection control
  • Control method of road sense simulated permanent magnet synchronous motor based on active disturbance rejection control

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[0052] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0053] The road sense simulation permanent magnet synchronous motor control method based on active disturbance rejection control of the present invention, such as figure 1 The schematic diagram of the road feeling simulation system of the present invention is shown as shown, wherein, ECU5 passes (wheel speed sensor 1, steering wheel angle sensor 4, torque sensor 3, worm gear reducer 2, rack and pinion 6) Feedback angle sensor signal, The wheel speed sensor signal and lateral acceleration signal calculate the torque required by the road sense motor at this time, and the target current of the PMSM is obtained through the relationship between torque and current for current closed-loop control to provide the driver with a smooth feel and real-time road feel .

[0054] The specific operation process includes the following steps:

[0055] Step 1,...

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Abstract

The invention relates to a control method for a road feeling simulation permanent magnet synchronous motor based on auto disturbance rejection control, which comprises the steps of firstly, establishing a controlled object state equation according to stator voltage and flux linkage equations of the permanent magnet synchronous motor; secondly, establishing a controlled object mathematical model inview of a time lag link; and finally, establishing a second-order auto disturbance rejection controller according to the controlled object mathematical model considering the time delay link and the state and the state equation, wherein the step specifically includes the design of a tracking differentiator, the design of a linear expansion state observer and the design of a linear stator error feedback control law. The method disclosed by the invention compensates the influence to the system due to the time lag link in a digital controller, improves the dynamic response and steady-state fluctuation of the current of the system, and provides a smoother hand feeling and real-time road feeling for the driver.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, power electronics and electric transmission, and in particular relates to a control method for a road sense analog permanent magnet synchronous motor based on active disturbance rejection control. Background technique [0002] In order to alleviate severe energy and environmental problems, energy saving and environmental protection have become one of the themes in the development of the automotive field. Electric vehicles, as a new energy hotspot in the 21st century, have attracted widespread attention. Combining them with wire control technology can achieve multiple sports modes , the handling stability has been further improved, and has become a major research focus; the steer-by-wire system cancels the mechanical connection between the steering column and the steering gear, so that the driver's lack of road sense needs to be simulated by the road sense motor to provide the driver Pro...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/05H02P21/13H02P21/28H02P21/22
CPCH02P21/05H02P21/13H02P21/22H02P21/28
Inventor 张辉王玉源王凯唐丛辉孙鹏
Owner XIAN UNIV OF TECH
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