Method for constructing neutral network generalized inverse adaptive controller of three-motor driving system

A driving system and neural network technology, applied in biological neural network models, controlling multiple AC motors, etc., can solve the problems of poor dynamic performance, large overshoot, slow start-up speed, etc., and achieve excellent speed and tension coordinated control. performance, solving decoupling control problems, improving the effect of startup speed

Inactive Publication Date: 2012-08-08
JIANGSU UNIV
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Problems solved by technology

However, the driving system composed of three or more motors is widely used in industrial applications, involving many parameters and coupling variables and complex equipment. Therefore, the existing control strategy has obvious limitations, and its closed-loop Most of the controllers use ordinary linear PID controllers. This kind of controller is simple in structure, low in cost, easy to implement, an

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  • Method for constructing neutral network generalized inverse adaptive controller of three-motor driving system
  • Method for constructing neutral network generalized inverse adaptive controller of three-motor driving system
  • Method for constructing neutral network generalized inverse adaptive controller of three-motor driving system

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Embodiment Construction

[0025] Such as figure 1 As shown, a three-motor drive system 4 is formed. The three-motor drive system 4 includes three AC asynchronous induction motors 2 and three frequency converters 1, and No. After being decelerated by the reducer, the corresponding three driving rollers are respectively driven to run. The three driving rollers are connected by a belt. There are floating rollers on the belt. Due to the tension of the floating rollers, the belt will generate tension F 12 , F 23 , so that the system can run with load 3. Three frequency converters 1 respectively drive three AC asynchronous induction motors 2 to drive loads 3 , thus forming a three-motor drive system 4 . Considering that the rotating speed of each induction motor 2 in the three-motor drive system 4 and the tension force of the belt are interrelated and influenced, the present invention adopts the mode of master-slave control, suppose No. 1 induction motor to be active motor, its rotating speed ω r1 and be...

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Abstract

The invention discloses a method for constructing a neutral network generalized inverse adaptive controller of a three-motor driving system. Three frequency converters respectively drive three induction motors to drive a load to form the three-motor driving system, the rotating speed setting values of the three frequency converters are set by S7-300 PLC (Programmable Logic Controller), the neutral network generalized inverse of the three-motor driving system is constructed by using a static neutral network, two integrators and three transfer functions, and the neutral network generalized inverse is connected in front of the three-motor driving system to form a pseudo linear compound system. Corresponding fuzzy adaptive controllers are respectively designed for one speed subsystem and two tension subsystems to form a fuzzy adaptive closed-loop controller, and the fuzzy adaptive closed-loop controller and the neutral network generalized inverse are connected in series to form the neutral network generalized inverse adaptive controller. Control parameters can be adjusted online according to system errors, the starting time and the overshoot of the system can be greatly reduced, and the tracking accuracy and the tracking speed of the system are obviously increased.

Description

technical field [0001] The invention relates to a construction method of a neural network generalized inverse adaptive controller for a three-motor drive system, which is suitable for high-performance synchronous coordinated decoupling control of three inverters driving three induction motors to drive loads, and belongs to electric drive control equipment technology field. Background technique [0002] In recent years, a multi-motor drive system composed of multiple inverters driving multiple induction motors and driving loads has been widely used in electric vehicle drives, urban rail transit, printing and other industrial fields. The research on the control technology of multi-motor drive system has developed rapidly, and the high-precision, durable and efficient multi-motor synchronous coordinated control performance has become the focus of research. For the three-motor drive system, it has the characteristics of multiple inputs, multiple outputs, nonlinearity, and stron...

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Application Information

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IPC IPC(8): H02P5/74G06N3/02
Inventor 刘国海于堃赵文祥胡德水
Owner JIANGSU UNIV
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