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Brushless DC-motor sliding-mode control system used for metro shielding barriers

A brushed DC motor and control system technology, applied in the direction of a single motor speed/torque control, electronic commutator, etc., can solve the problems of difficulty in reaching the optimal state, dependence, poor robustness, etc., and improve the response speed and reduce the speed. Chattering, robustness-enhancing effects

Inactive Publication Date: 2014-05-07
江苏新绿能科技有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The traditional brushless DC motor control system is a PID system. The PID system is too dependent on the model parameters of the control object, and its robustness is poor. The actual production site conditions are difficult to achieve the optimal state.

Method used

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  • Brushless DC-motor sliding-mode control system used for metro shielding barriers
  • Brushless DC-motor sliding-mode control system used for metro shielding barriers
  • Brushless DC-motor sliding-mode control system used for metro shielding barriers

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Embodiment Construction

[0011] In view of the above-mentioned defects, the present invention provides a brushless DC motor sliding mode control system for subway screen doors. The control algorithm is simple, the response speed is fast, it is insensitive to parameter changes and disturbances, and does not require system online identification.

[0012] For realizing the above object, technical scheme of the present invention is:

[0013] A brushless DC motor sliding mode control system for subway screen doors, which consists of a sliding mode variable structure controller, a current detection module, a current regulation module, a PWM module, an inverter module, a brushless DC motor BLDCM, and a speed calculation module It is composed of a position detection device; double closed-loop control is adopted, that is, the speed loop is used as the outer loop, and the position detection module is sent to the speed calculation module to realize the speed calculation. The calculated speed is compared with the ...

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PUM

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Abstract

The invention discloses a brushless DC-motor sliding-mode control system used for metro shielding barriers. The system includes the following parts: a sliding mode variable structure controller, a current regulator, a PWM driving circuit, an inverter, a BLDCM and a position detection device and the like. The whole system adopts a double-closed-loop control system. An inner loop adopts a traditional PI controller and an outer loop adopts the sliding mode variable structure controller. Current brushless DC-motor control systems of metro shielding barriers all adopt traditional PIDs and overly depend on model parameters of controlled objects so that robustness is poor and response speed is not fast enough. The brushless DC-motor sliding-mode control system used for the metro shielding barriers is simple in adopted control algorithm, high in response speed, insensitive to parameter change or disturbance and does not need system online identification.

Description

technical field [0001] The invention relates to a sliding mode control system for a brushless DC motor of a subway screen door. Background technique [0002] With the continuous improvement of the service level of rail transit. The requirements for passenger safety, station environment and energy conservation are also constantly increasing. The screen door system is produced precisely because of these needs of rail transit. The actuator motor of the subway screen door usually adopts a brushless DC motor, which is a multivariable, strongly coupled nonlinear system. The traditional brushless DC motor control system is a PID system. The PID system is too dependent on the model parameters of the control object, and its robustness is poor. The actual production site conditions are difficult to achieve the optimal state. Contents of the invention [0003] In view of the above-mentioned defects, the present invention provides a brushless DC motor sliding mode control system fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/08H02P6/16H02P6/06
Inventor 张友刚杨阳刘志刚
Owner 江苏新绿能科技有限公司
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