CN205453567U

CN205453567U - Six phase brushless DC motor for water pump and neural network speed control system thereof

Info

Publication number: CN205453567U
Application number: CN201620273790.5U
Authority: CN
Inventors: 龙驹
Original assignee: Xihua University
Current assignee: Xihua University
Priority date: 2016-04-05
Filing date: 2016-04-05
Publication date: 2016-08-10
Anticipated expiration: 2026-04-05

Abstract

The utility model discloses a six phase brushless DC motor's neural network speed control system for the water pump, including reference current module, electric current hysteresis loop control module, executable module, load torque measured module, motor main part module and be used for carrying out the NARMA that controls to the rotational speed the L2 controller, NARMA the L2 controller includes preset rotational speed input, the actual measurement rotational speed input that links to each other with the actual measurement rotational speed output of motor main part module and the load torque input that links to each other with load torque measured module, NARMA L2 control module's output links to each other with the input of reference current module. The utility model discloses a NARMA the L2 controller controls the rotational speed, and its control mode is non -linear control mode, and has stronger self -learning ability, can solve current strong, the high -order nature scheduling problem of six phase brushless DC motor's the degree of coupling that speed control system has for the water pump, and control performance is high. The utility model also discloses a six phase brushless DC motor for the water pump of including above -mentioned neural network speed control system.

Description

A kind of water pump six phase brushless DC motors and neutral net governing system thereof

Technical field

This utility model relates to motor speed and controls technical field, particularly relates to a kind of water pump six phase brushless DC motors and neutral net governing system thereof.

Background technology

Along with developing rapidly of production technology, water pump is applied to productive life more and more with six phase brushless DC motors, and nowadays due to the continuous lifting of commercial production demand, the water pump governing system of six phase brushless DC motors is had higher requirement by people.

At present, rotating speed is controlled by the water pump common PI controller that uses of six phase brushless DC motors, has simple in construction, the advantage such as is easily achieved.But, control to be a kind of Linear Control due to common PI, it is impossible to the problems such as non-linear, the degree of coupling strong, the high-order that solution water pump is had by the governing system of six phase brushless DC motors well, control performance is low.

Therefore, how providing water pump six phase brushless DC motors that a kind of control performance is high and neutral net governing system thereof is the problem that those skilled in the art are presently required solution.

Utility model content

The purpose of this utility model is to provide a kind of water pump six phase brushless DC motors and neutral net governing system thereof, use nonlinear Control mode, and can solve the problem that the problem such as strong, the high-order of the had degree of coupling of governing system of existing water pump six phase brushless DC motors, control performance is high.

For solving above-mentioned technical problem, this utility model provides the neutral net governing system of a kind of water pump six phase brushless DC motors, including reference current module, current hysteresis-band control module, performs module, load torque measurement module, motor body module and for the NARMA-L2 controller being controlled rotating speed；Wherein；

Described NARMA-L2 controller includes given rotating speed input, the actual measurement rotating speed input being connected with the actual measurement rotating speed outfan of described motor body module and the load torque input being connected with described load torque measurement module；The outfan of described NARMA-L2 control module is connected with the input of described reference current module；

The outfan of described reference current module is connected with the reference current input of described current hysteresis-band control module, the measured current input of described current hysteresis-band control module is connected with the measured current outfan of described motor body module, and the outfan of described current hysteresis-band control module is connected with the input of described execution module；

The outfan of described execution module is connected with the input of described motor body module.

Preferably, described execution module is inverter module.

For solving above-mentioned technical problem, this utility model additionally provides a kind of water pump six phase brushless DC motors, including the neutral net governing system as described in any of the above item.

This utility model provides a kind of water pump six phase brushless DC motors and neutral net governing system thereof, use NARMA-L2 controller that rotating speed is controlled, the control mode of this controller belongs to ANN Control, for nonlinear Control mode, and there is stronger self-learning capability, can solve the problem that the problem such as strong, the high-order of the had degree of coupling of governing system of existing water pump six phase brushless DC motors, control performance is high.

Accompanying drawing explanation

In order to be illustrated more clearly that the technical scheme in this utility model embodiment, the accompanying drawing used required in prior art and embodiment will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

The structural representation of the neutral net governing system of a kind of water pump six phase brushless DC motors that Fig. 1 provides for this utility model；

The phantom schematic diagram of the Fig. 2 neutral net governing system of a kind of water pump six phase brushless DC motors for providing for this utility model；

Wherein, in Fig. 2:

N-ref given rotating speed, n survey rotating speed, TL load torque, NARMA-L2 NARMA-L2 controller, ReferenceCurrent reference current module, IGBTinverter inverter module, dianjizhuti motor body module.

Detailed description of the invention

Core of the present utility model is to provide a kind of water pump six phase brushless DC motors and neutral net governing system thereof, use nonlinear Control mode, and can solve the problem that the problem such as strong, the high-order of the had degree of coupling of governing system of existing water pump six phase brushless DC motors, control performance is high.

For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.

This utility model provides the neutral net governing system of a kind of water pump six phase brushless DC motors, shown in Figure 1, the structural representation of the neutral net governing system of a kind of water pump six phase brushless DC motors that Fig. 1 provides for this utility model；

This neutral net governing system includes reference current module 12, current hysteresis-band control module 13, performs module 14, load torque measurement module 16, motor body module 15 and for the NARMA-L2 controller 11 being controlled rotating speed；Wherein；

NARMA-L2 controller 11 includes given rotating speed input, the actual measurement rotating speed input being connected with the actual measurement rotating speed outfan of motor body module 15 and the load torque input being connected with load torque measurement module 16；The outfan of NARMA-L2 control module is connected with the input of reference current module 12；

The outfan of reference current module 12 is connected with the reference current input of current hysteresis-band control module 13, the measured current input of current hysteresis-band control module 13 is connected with the measured current outfan of motor body module 15, current hysteresis-band control module 13 outfan with perform module 14 input be connected；

The outfan performing module 14 is connected with the input of motor body module 15.

It is understood that NARMA-L2 controller 11 here is linear feedback controller, it is possible to export suitable spin rate control quantity according to given rotating speed, actual measurement rotating speed and the load torque of input.NARMA-L2 controller 11 is a kind of nerve network controller based on the design of BP neutral net.BP neutral net is a kind of neural network structure including three layers and more than three layers neurons, a lot of nonlinear functions can be approached, it is thus possible to overcome the problems such as non-linear, the high-order parameter time varying that water pump six phase brushless DC motors have, water pump is had by six phase brushless DC motors nonlinear neutral net governing system and preferably controls effect；Further, since BP neutral net has self-learning capability, therefore the overshoot of neutral net governing system can be reduced；Meanwhile, using this kind of controller to be controlled reducing regulating time, and robustness is good, capacity of resisting disturbance is strong, i.e. uses the neutral net governing system of NARMA-L2 controller 11 to have preferable stability.

It addition, the neutral net governing system in this utility model uses electric current-rotating speed double-closed-loop control, realize controlling the purpose of the water pump rotating speed of six phase brushless DC motors by the controlled quentity controlled variable and electric current adjusting rotating speed.

Wherein, performing module 14 is inverter module.

Shown in Figure 2, the phantom schematic diagram of the Fig. 2 neutral net governing system of a kind of water pump six phase brushless DC motors for providing for this utility model.

This utility model provides the neutral net governing system of a kind of water pump six phase brushless DC motors, use NARMA-L2 controller that rotating speed is controlled, the control mode of this controller belongs to ANN Control, for nonlinear Control mode, and there is stronger self-learning capability, can solve the problem that the problem such as strong, the high-order of the had degree of coupling of governing system of existing water pump six phase brushless DC motors, control performance is high.

This utility model additionally provides a kind of water pump six phase brushless DC motors, including above neutral net governing system.

Now, water pump includes two identical NARMA-L2 controllers 11 in six phase water pumps, six phase brushless DC motors.

It should be noted that, in this manual, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.

Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model.Multiple amendment to these embodiments will be apparent from for those skilled in the art, and generic principles defined herein can realize in the case of without departing from spirit or scope of the present utility model in other embodiments.Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.

Claims

1. the water pump neutral net governing system of six phase brushless DC motors, it is characterized in that, including reference current module, current hysteresis-band control module, perform module, load torque measurement module, motor body module and for the NARMA-L2 controller that rotating speed is controlled；Wherein；

System the most according to claim 1, it is characterised in that described execution module is inverter module.

3. water pump six phase brushless DC motors, it is characterised in that include the neutral net governing system as described in any one of claim 1-2.