Engineers Garage

  • Electronic Projects & Tutorials
    • Electronic Projects
      • Arduino Projects
      • AVR
      • Raspberry pi
      • ESP8266
      • BeagleBone
      • 8051 Microcontroller
      • ARM
      • PIC Microcontroller
      • STM32
    • Tutorials
      • Audio Electronics
      • Battery Management
      • Brainwave
      • Electric Vehicles
      • EMI/EMC/RFI
      • Hardware Filters
      • IoT tutorials
      • Power Tutorials
      • Python
      • Sensors
      • USB
      • VHDL
    • Circuit Design
    • Project Videos
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • Electronic Product News
    • Business News
    • Company/Start-up News
    • DIY Reviews
    • Guest Post
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • DigiKey Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • Learn
    • eBooks/Tech Tips
    • Design Guides
    • Learning Center
    • Tech Toolboxes
    • Webinars & Digital Events
  • Resources
    • Digital Issues
    • EE Training Days
    • LEAP Awards
    • Podcasts
    • Webinars / Digital Events
    • White Papers
    • Engineering Diversity & Inclusion
    • DesignFast
  • Guest Post Guidelines
  • Advertise
  • Subscribe

Fuzzy Logic : Hardware & Application

By Ashutosh Bhatt April 21, 2008

First generation of fuzzy hardware was of analogue type and came from Japan in 1980’s. These processors used fuzzy gates in computation having switching times in nanoseconds with accuracy within 0.1%. However, they never found their way out of the research mainly due to lack of programmability. Second generation was Digital Fuzzy Processors. The name can be considered to be a misnomer as something can either be digital, two valued or fuzzy which is continuous. These digital processors however worked on fuzzy instruction sets utilizing multilayered structure in interfacing.
 
An interface layer fetched the fuzzy inputs which were then written onto the fuzzy processor via the host MCU communicating with the fuzzy processor through a Dual Port Ram (DPRAM). This however had a disadvantage of increased latency, complexity of code and overhead for communication between the two processors. These successfully made into the market in 1990’s but were soon to be succeeded by the third generation of Integrated Fuzzy Processors. It can be achieved by two techniques, by integrating the two co-processors on the same chip thus increasing the speed and reducing communication overhead. This however leads to increase in chip size.
 
Another approach is to enhance the existing instruction set. This offers threefold increase in computation of FL while achieving compactation of the code at the same time. The only problem is that this needs the redesigning of the MCU.
FL3
The curves shown above are the typical of a linear first order system using conventional control and fuzzy logic, think of them as speed control system. The improvement of fuzzy system over conventional mathematically modeled system is quite evident in the form of lesser time taken to reach the desired speed and lesser overshoots.
 
But there is a problem with fuzzy logic when used as a standalone solution. It works by evaluating each and every rule, greater the number of rules, better the system. Further, these rules are predefined making the system data set dependent and non-adaptive. Thus to make these systems more self-reliant, a black box of Neural Networks is put in between the inputs and the fuzzy processor to compute the set of membership functions and constructing the rule matrix. It is this clever combination of the two that leads us to better systems and a new dimension called – Neurofuzzy.
 
Anti-Lock braking systems that come in most modern cars employ fuzzy systems. Basically fuzzy system can be employed in any control system where fast and tight control is required. Diverse fields ranging from the day to day appliances like an intelligent washing machine which senses the amount of clothes and decides the type of washing, to traffic light control system for increased efficiency in traffic management, to cognitive air conditioning, to sophisticated research fields like language processing and artificial intelligence to industrial applications like robotic control as a replacement for the PID controllers have found usage and wide scale acceptance of Fuzzy Logic.
 
United Kingdom Transplant Support Service Authority uses FL in prioritizing the kidney waiting list. On the first sight itself, fuzzy logic looks more appealing to a human mind because of the innate similarity in the decision making processes of the brain than any form of two valued logic which always leaves scope for ‘What if’s’. Thus while researchers might still argue that fuzzy logic is just another manifestation of probability or there is nothing fuzzy about fuzzy logic, they sure cannot underrate the advancements that fuzzy logic has helped in achieving.

Filed Under: Articles

 

Next Article

← Previous Article
Next Article →

Questions related to this article?
👉Ask and discuss on Electro-Tech-Online.com and EDAboard.com forums.



Tell Us What You Think!! Cancel reply

You must be logged in to post a comment.

EE TECH TOOLBOX

“ee
Tech Toolbox: 5G Technology
This Tech Toolbox covers the basics of 5G technology plus a story about how engineers designed and built a prototype DSL router mostly from old cellphone parts. Download this first 5G/wired/wireless communications Tech Toolbox to learn more!

EE Learning Center

EE Learning Center
“engineers
EXPAND YOUR KNOWLEDGE AND STAY CONNECTED
Get the latest info on technologies, tools and strategies for EE professionals.

HAVE A QUESTION?

Have a technical question about an article or other engineering questions? Check out our engineering forums EDABoard.com and Electro-Tech-Online.com where you can get those questions asked and answered by your peers!


RSS EDABOARD.com Discussions

  • Electrochemical Front End do we need dual voltage rails and split ground
  • floating node warning in LTSpice
  • inconclusive verification in formality.
  • How best to synchronise the UCC38C45?
  • Driving hi side Full Bridge FETs with a HV Bootstrap IC?

RSS Electro-Tech-Online.com Discussions

Featured – LoRa/LoRaWan Series

  • What is the LoRaWAN network and how does it work?
  • Understanding LoRa architecture: nodes, gateways, and servers
  • Revolutionizing RF: LoRa applications and advantages
  • How to build a LoRa gateway using Raspberry Pi
  • How LoRa enables long-range communication
  • How communication works between two LoRa end-node devices

Recent Articles

  • How to monitor temperature and humidity on a TFT display with graphics
  • Tria modules integrate edge AI processing with multi-core processors
  • pSemi introduces RF switch with 52 dBm PMAX,PEAK and 90-dBm IIP3 linearity
  • XP Power launches 1.3 kW power supply with 58.9 W/cm³ density
  • How to enable Wi-Fi provisioning in ESP32-based IoT products

EE ENGINEERING TRAINING DAYS

engineering

Submit a Guest Post

submit a guest post
Engineers Garage
  • Analog IC TIps
  • Connector Tips
  • Battery Power Tips
  • DesignFast
  • EDABoard Forums
  • EE World Online
  • Electro-Tech-Online Forums
  • EV Engineering
  • Microcontroller Tips
  • Power Electronic Tips
  • Sensor Tips
  • Test and Measurement Tips
  • 5G Technology World
  • Subscribe to our newsletter
  • About Us
  • Contact Us
  • Advertise

Copyright © 2025 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy

Search Engineers Garage

  • Electronic Projects & Tutorials
    • Electronic Projects
      • Arduino Projects
      • AVR
      • Raspberry pi
      • ESP8266
      • BeagleBone
      • 8051 Microcontroller
      • ARM
      • PIC Microcontroller
      • STM32
    • Tutorials
      • Audio Electronics
      • Battery Management
      • Brainwave
      • Electric Vehicles
      • EMI/EMC/RFI
      • Hardware Filters
      • IoT tutorials
      • Power Tutorials
      • Python
      • Sensors
      • USB
      • VHDL
    • Circuit Design
    • Project Videos
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • Electronic Product News
    • Business News
    • Company/Start-up News
    • DIY Reviews
    • Guest Post
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • DigiKey Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • Learn
    • eBooks/Tech Tips
    • Design Guides
    • Learning Center
    • Tech Toolboxes
    • Webinars & Digital Events
  • Resources
    • Digital Issues
    • EE Training Days
    • LEAP Awards
    • Podcasts
    • Webinars / Digital Events
    • White Papers
    • Engineering Diversity & Inclusion
    • DesignFast
  • Guest Post Guidelines
  • Advertise
  • Subscribe