Nine-phase brushless DC motor speed control system for water pump and its parallel speed controller

A brushed DC motor, speed controller technology, applied in electric speed/acceleration control, electric controller, controller with specific characteristics, etc., can solve the problem of poor torque ripple suppression effect optimization effect and other problems

Active Publication Date: 2018-04-24
鲲鹏万象(成都)智能科技有限责任公司
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Problems solved by technology

However, since ordinary PID control is a kind of linear control, and the nine-phase brushless DC motor speed control system for water pumps is a nonlinear system, the effect of ordinary PID control on the suppression of torque ripple and the optimization effect of speed increase / decrease are relatively low. Difference

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  • Nine-phase brushless DC motor speed control system for water pump and its parallel speed controller
  • Nine-phase brushless DC motor speed control system for water pump and its parallel speed controller
  • Nine-phase brushless DC motor speed control system for water pump and its parallel speed controller

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Embodiment Construction

[0041] The core of the present invention is to provide a nine-phase brushless DC motor speed control system for water pumps and its parallel speed controller, which can select an appropriate control mode to control the speed according to the load requirements, and improve the suppression of torque ripple. Effect and optimized effect on RPM increase / decrease.

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the pr...

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Abstract

The invention discloses a parallel type rotary speed controller of a nine-phase brushless direct-current motor for a water pump. The parallel type rotary speed controller comprises a first adder, a fuzzy PID (Proportion Integration Differentiation) rotary speed control module, a fractional order PID rotary speed control module, an absolute value module and a selection switch, wherein the absolute value module is used for generating different indication signals according to loading states of the nine-phase brushless direct-current motor for the water pump; the selection switch is used for controlling an output end of the fuzzy PID rotary speed control module to serve as an output end of the parallel type rotary speed controller when the indication signal represents that the loading state is on-load, and controlling the output end of the fractional order PID rotary speed control module to serve as the output end of the parallel type rotary speed controller when the indication signal represents that the loading state is no-load. A rotary speed can be controlled through selecting a proper controlling manner according to load requirements, an inhibition effect on torque ripples is improved, and an optimization effect of increasing / decreasing the rotary speed is improved. The invention further discloses a nine-phase brushless direct-current motor speed regulation system for the water pump; the nine-phase brushless direct-current motor speed regulation system comprises the parallel type rotary speed controller above and also has the effects above.

Description

technical field [0001] The invention relates to the field of motor speed control, in particular to a nine-phase brushless DC motor speed regulating system for a water pump and a parallel speed controller thereof. Background technique [0002] With the rapid development of production technology, brushless DC motors are more and more used in production and life. Nowadays, due to the continuous improvement of industrial production demand, people put forward higher requirements for the control effect of brushless DC motor speed control. Require. [0003] At present, the nine-phase brushless DC motor speed control system for water pumps uses a common PID controller to control the speed, which has the advantages of simple structure and easy implementation. In the process of speed control, certain torque ripple and certain speed increase / decrease will inevitably occur, and according to different load conditions, the speed control system will need to have a better torque ripple sup...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B11/42
CPCG05B11/42G05D13/62
Inventor 龙驹曾永忠姜曾何垂柯
Owner 鲲鹏万象(成都)智能科技有限责任公司
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