Development of single-chip fuzzy controller based on FFSI in binary  

作　　者：张吉礼 欧进萍 孙德兴 

机构地区：[1]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China, [2]School of the Civil Engineering, Harbin Institute of Technology, Harbin 150090, China [3]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China,ength and concise structure of fuzzy logic reasoning program and its real-time reasoning characteristic have their effect on the performance of a digital single-chip fuzzy controller. The control effect of a digital fuzzy controller based on looking up fuzzy control responding table is only relative to the table and not relative to the fuzzy control rules in the practical control process. Aiming at above problem and having combined fuzzy log-ic reasoning with digital operational characteristics of a single-chip microcomputer, functioning-fuzzy-subset inference (FFSI) in binary, in which triangle membership functions of error and error-in-change are all represented in binary and singleton membership functions of control variable is binary too, has been introduced. The circuit principle plans of a single-chip fuzzy controller have been introduced for development of its hardware, and the primary program structure, fuzzy logic reasoning subroutine, serial communication subroutine with PC and reliability design of the fuzzy controller are all discussed in detail. The control of indoor temperature by a fuzzy controller has been conducted using a testing-room thermodynamic system. Research results show that the FFSI in binary can exercise a concise fuzzy control in a single-chip fuzzy controller, and the fuzzy controller is therefore reliable and possesses a high performance-price ratio.

出　　处：《Journal of Harbin Institute of Technology(New Series)》2003年第3期269-274,共6页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China(Grant No. 59908001);Multidiscipline Scientific Research Foundation of Harbin Institute of Technology(Grant No. HIT. MD200030)

摘　　要：Length and concise structure of fuzzy logic reasoning program and its real-time reasoning characteris-tic have their effect on the performance of a digital single-chip fuzzy controller. The control effect of a digitalfuzzy controller based on looking up fuzzy control responding table is only relative to the table and not relative tothe fuzzy control rules in the practical control process. Aiming at above problem and having combined fuzzy log-ic reasoning with digital operational characteristics of a single-chip microcomputer, functioning-fuzzy-subset in-ference (FFSI) in binary, in which triangle membership functions of error and error-in-change are all represen-ted in binary and singleton membership functions of control variable is binary too, has been introduced. The cir-cuit principle plans of a single-chip fuzzy controller have been introduced for development of its hardware, andthe primary program structure, fuzzy logic reasoning subroutine, serial communication subroutine with PC andreliability design of the fuzzy controller are all discussed in detail. The control of indoor temperature by a fuzzycontroller has been conducted using a testing-room thermodynamic system. Research results show that the FFSIin binary can exercise a concise fuzzy control in a single-chip fuzzy controller, and the fuzzy controller is there-fore reliable and possesses a high performance-price ratio.Length and concise structure of fuzzy logic reasoning program and its real-time reasoning characteristic have their effect on the performance of a digital single-chip fuzzy controller. The control effect of a digital fuzzy controller based on looking up fuzzy control responding table is only relative to the table and not relative to the fuzzy control rules in the practical control process. Aiming at above problem and having combined fuzzy log-ic reasoning with digital operational characteristics of a single-chip microcomputer, functioning-fuzzy-subset inference (FFSI) in binary, in which triangle membership functions of error and error-in-change are all represented in binary and singleton membership functions of control variable is binary too, has been introduced. The circuit principle plans of a single-chip fuzzy controller have been introduced for development of its hardware, and the primary program structure, fuzzy logic reasoning subroutine, serial communication subroutine with PC and reliability design of the fuzzy controller are all discussed in detail. The control of indoor temperature by a fuzzy controller has been conducted using a testing-room thermodynamic system. Research results show that the FFSI in binary can exercise a concise fuzzy control in a single-chip fuzzy controller, and the fuzzy controller is therefore reliable and possesses a high performance-price ratio.

关 键 词：functioning-fuzzy-subset inference single-chip fuzzy controller testing-room thermodynamic system indoor temperature experiment 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置] TP368.1[自动化与计算机技术—控制科学与工程]