Fuzzy logic ladder diagram program for a machine or process controller

Claim 1

A method of operating a programming computer to display a controller program based on fuzzy logic for downloading and execution in a programmable controller processor, the method comprising: in response to a plurality of user inputs, displaying on the screen of the programming computer a ladder diagram representing a programmable controller ladder program based on fuzzy logic, wherein the displaying step further comprises a) displaying fuzzy logic program input instructions with an input variable related to data in a programmable controller data table, an input membership function and an actual value representing evaluation of the input data with respect to a respective input membership function; b) displaying fuzzy logic program output instructions with an output variable related to data in a programmable controller data table, an output membership function and an actual value representing a contribution of a respective output membership function to a resulting output; c) displaying portions of rungs representing control rules for associating input instructions with each other and for associating input instructions with a related output instruction; and d) displaying links between parallel rung branches representing a rule for relating the contributions of the respective output membership functions in parallel rung branches to an individual result; and translating the displayed ladder diagram based on fuzzy logic into first and second portions, the first portion comprising a set of instruction codes to be executed by the programmable controller and the second portion comprising knowledge base data organized in a plurality of tables for access during execution of the instruction codes in the programmable controller.

Claim 2

A method of operating a programming computer to display a controller program based on fuzzy logic for downloading and execution in a programmable controller processor, the method comprising: in response to a plurality of user inputs, displaying on the screen of the programming computer a ladder diagram representing a programmable controller ladder program based on fuzzy logic, wherein the displaying step further comprises a) displaying fuzzy logic program input instructions with an input variable related to data in a programmable controller data table, an input membership function and an actual value representing evaluation of the input data with respect to a respective input membership function; b) displaying fuzzy logic program output instructions with an output variable related to data in a programmable controller data table, an output membership function and an actual value representing a contribution of a respective output membership function to a resulting output; c) displaying portions of rungs representing control rules for associating input instructions with each other and for associating input instructions with a related output instruction; and d) displaying links between parallel rung branches representing a rule for relating the contributions of the respective output membership functions in parallel rung branches to an individual result; and translating the displayed ladder diagram based on fuzzy logic into first and second portions, the first portion comprising a set of instruction codes to be executed by the programmable controller and the second portion comprising knowledge base data organized in a plurality of tables for access during execution of the instruction codes in the programmable controller.

Claim 10

A method of operating a programming computer to display a controllable program based on fuzzy logic for downloading and execution in a programmable controller processor, the method comprising: in response to a plurality of user inputs, displaying on the screen of the programming computer a ladder diagram graphical display representing a programmable controller program based on fuzzy logic, wherein the displaying step further comprises a) displaying fuzzy logic program input instructions with an input variable related to data in a programmable controller data table, an input membership function and an actual value representing evaluation of the input data with respect to a respective input membership function; b) displaying fuzzy logic program output instructions with an output variable related to data in a programmable controller data table, an output membership function and an actual value representing a contribution of a respective output membership function to a resulting output; c) displaying portions of rungs representing control rules for associating input instructions with each other and for associating input instructions with a related output instruction; and d) displaying links between parallel rung branches representing control rules for relating the contributions of the respective output membership functions in parallel rung branches to an individual result; and compiling the displayed program based on fuzzy logic into first and second portions, the first portion comprising a loop program for execution in the programmable controller and the second portion comprising knowledge base data organized in a plurality of tables for access during execution of the loop program.

Claim 11

A method of operating a programming computer to display a controllable program based on fuzzy logic for downloading and execution in a programmable controller processor, the method comprising: in response to a plurality of user inputs, displaying on the screen of the programming computer a ladder diagram graphical display representing a programmable controller program based on fuzzy logic, wherein the displaying step further comprises a) displaying fuzzy logic program input instructions with an input variable related to data in a programmable controller data table, an input membership function and an actual value representing evaluation of the input data with respect to a respective input membership function; b) displaying fuzzy logic program output instructions with an output variable related to data in a programmable controller data table, an output membership function and an actual value representing a contribution of a respective output membership function to a resulting output; c) displaying portions of rungs representing control rules for associating input instructions with each other and for associating input instructions with a related output instruction; and d) displaying links between parallel rung branches representing control rules for relating the contributions of the respective output membership functions in parallel rung branches to an individual result; and compiling the displayed program based on fuzzy logic into first and second portions, the first portion comprising a loop program for execution in the programmable controller and the second portion comprising knowledge base data organized in a plurality of tables for access during execution of the loop program.

Claim 14

A method of entering a controller program based on fuzzy logic for downloading and execution in a programmable controller processor, the method comprising: in response to a plurality of user inputs, displaying on the screen of the programming computer a programmable controller program based on fuzzy logic, wherein the displaying step further comprises a) in response to user inputs, displaying a plurality of propositions, membership functions and input data variables and output data variables for executing fuzzy logic operations; and b) in response to user inputs, displaying a plurality of inference instructions to generate a plurality of program outputs; storing a set of instructions for execution in the programmable controller to evaluate membership functions, to apply inference instructions and to generate an individual output from a plurality of program outputs; translating the displayed program based on fuzzy logic to knowledge base data organized in a plurality of tables for access during execution of the set of instructions in the programmable controller; and storing the set of instructions and the knowledge base data for execution in the programmable controller.

Claim 15

A method of entering a controller program based on fuzzy logic for downloading and execution in a programmable controller processor, the method comprising: in response to a plurality of user inputs, displaying on the screen of the programming computer a programmable controller program based on fuzzy logic, wherein the displaying step further comprises a) in response to user inputs, displaying a plurality of propositions, membership functions and input data variables and output data variables for executing fuzzy logic operations; and b) in response to user inputs, displaying a plurality of inference instructions to generate a plurality of program outputs; storing a set of instructions for execution in the programmable controller to evaluate membership functions, to apply inference instructions and to generate an individual output from a plurality of program outputs; translating the displayed program based on fuzzy logic to knowledge base data organized in a plurality of tables for access during execution of the set of instructions in the programmable controller; and storing the set of instructions and the knowledge base data for execution in the programmable controller.

Claim 18

A method of entering a controller program based on fuzzy logic for a programmable controller that controls outputs in response to inputs on a controlled system, the method comprising: in response to a plurality of user inputs to a programming computer, displaying on the screen of the programming computer a ladder diagram graphical display representing a programmable controller program based on fuzzy logic, wherein the displaying step further comprises a) displaying a plurality of propositions, membership functions and input data variables for executing fuzzy logic operations; b) displaying a plurality of inference instructions to generate a plurality of program outputs; and c) displaying a plurality of defuzzification instructions for reducing the plurality of program outputs to a single resulting output; and translating the programmable controller program based on fuzzy logic into first and second portions, the first portion comprising a coded program and the second portion comprising knowledge base tables which are executable by a microprocessor within a programmable controller processor.

Claim 19

A method of entering a controller program based on fuzzy logic for a programmable controller that controls outputs in response to inputs on a controlled system, the method comprising: in response to a plurality of user inputs to a programming computer, displaying on the screen of the programming computer a ladder diagram graphical display representing a programmable controller program based on fuzzy logic, wherein the displaying step further comprises a) displaying a plurality of propositions, membership functions and input data variables for executing fuzzy logic operations; b) displaying a plurality of inference instructions to generate a plurality of program outputs; and c) displaying a plurality of defuzzification instructions for reducing the plurality of program outputs to a single resulting output; and translating the programmable controller program based on fuzzy logic into first and second portions, the first portion comprising a coded program and the second portion comprising knowledge base tables which are executable by a microprocessor within a programmable controller processor.