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Fuzzy control chip based on FPGA

A technology of fuzzy control and fuzzy controller, which is applied in the direction of adaptive control, general control system, control/regulation system, etc. It can solve the problems of affecting reasoning speed, poor versatility, and not considering monitoring and operation

Inactive Publication Date: 2007-11-28
WUHAN UNIV OF SCI & TECH
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

But there are some defects in this implementation method: firstly, the membership function of this controller is a fixed triangle membership function, which cannot be adjusted according to different situations, and the pure triangle membership function is not suitable for some controlled objects ;Secondly, the fuzzy inference method is used to look up the table between partitions, and many unnecessary rules are involved in the inference during each inference process, which affects the inference speed; thirdly, the parameters of the fuzzy controller implemented are fixed and cannot be changed. Therefore, the versatility is poor; the last time, the controller did not consider the problem of monitoring and operating the controller in actual production during the implementation process, and did not design the man-machine interface and the communication module with the host computer

Method used

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  • Fuzzy control chip based on FPGA
  • Fuzzy control chip based on FPGA
  • Fuzzy control chip based on FPGA

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Embodiment Construction

[0052] Below in conjunction with embodiment the present invention will be further described:

[0053] 【Example】

[0054] This embodiment is shown in Figure 1 for example, A / D conversion control module [2], fuzzy controller [10], serial port communication module [7] and total control module [9] are programmed with hardware description language VHDL and integrated into a chip In FPGA[11], where:

[0055] The fuzzy controller [10] consists of a fuzzy module [3], a fuzzy rule look-up module [4], a fuzzy rule table [5], a fuzzy reasoning module [6] and an anti-fuzzy module [8], forming a fuzzy control chip the main part of

[0056] One end of the serial port communication module [7] is respectively connected with the fuzzy module [3], the fuzzy rule look-up table [5] and the anti-fuzzy module [8] in the fuzzy controller [10]. Connected, the human-computer interaction between the host computer and the fuzzy control chip can be realized through the serial port communication module...

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Abstract

This invention relates to fuzzy control chip based on FPGA, which comprises the following technique scheme: programming and integrating the A / D conversion control module, fuzzy controller, series communication module and total control module by hardware description language VHDL, wherein, the fuzzy controller is composed of fuzzy module, fuzzy rule searching module, fuzzy rules form, fuzzy induce module and anti-fuzzy module; the series communication module end is connected to the fuzzy module, fuzzy rules form and anti-fuzzy module and the other end is connected to computer.

Description

1. Technical field [0001] The invention belongs to a fuzzy control chip. In particular, it relates to an FPGA-based fuzzy control chip. 2. Background technology [0002] With the development of fuzzy technology, fuzzy controller is more and more widely used in industrial production control represented by process control field. Most fuzzy controllers are realized by software or microprocessor (8051, etc.), and the response speed is slow, which limits the application of fuzzy controllers in low-speed systems for non-real-time control. In order to achieve real-time control, the response speed of the fuzzy controller must be improved, and the hardware implementation of the fuzzy inference process is a feasible way. [0003] A "method to realize fuzzy controller with FPGA" (Wang Li. Hardware Realization of Fuzzy Controller Based on FPGA. Control Engineering, 2004, 1), has its obvious advantages, and it is verified by inverted pendulum. But there are some defects in this implem...

Claims

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Application Information

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IPC IPC(8): G05B13/00G05B13/02
Inventor 方康玲李浩
Owner WUHAN UNIV OF SCI & TECH