Governor Controller Redundancy Switching via Truth-Table Logic
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Solution Overview
Problem
Existing methods for redundancy switch between controllers in hydraulic turbine governors face challenges when dealing with a large number of conditions, leading to potential switch failures due to neglect of complex logic determination.
Innovation Solution
A method involving a truth value table to list participation conditions and output results, simplify image language, and transform switch logic into programming language using a cloud storage system, with modules for truth value table generation, information simplification, and switch logic output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional experience-based programming methods are used for controller switch logic, then the programming process is simple, but conditions are likely to be neglected leading to switch failures
Solution Approach 1:
The patent segments the complex switch logic programming process into three distinct modules: truth value table generation module, information simplification module, and switch logic output module. This segmentation transforms the complex task into manageable steps, reducing programming complexity while ensuring comprehensive condition coverage through systematic processing of participation conditions and output results.
2Reliability
If comprehensive conditions are included in logic determination, then switch reliability is improved, but programming difficulty increases exponentially
Solution Approach 1:
The patent introduces an intermediary truth value table that serves as a bridge between participation conditions and output results. This intermediary structure systematically organizes all possible condition combinations and their corresponding outputs, allowing comprehensive logic determination without exponential programming difficulty. The truth value table acts as a mediator that structures the complex logic relationships in a manageable format.
Solution Approach 2:
The system performs self-service through automated truth value table generation and logic simplification. The truth value table generation module automatically creates the complete logic framework based on participation conditions, and the information simplification module automatically simplifies the logic expressions. This self-service approach ensures comprehensive condition coverage without requiring manual enumeration of all possibilities, thereby maintaining reliability while controlling programming complexity.
3Manufacturing precision
If manual logic design is used by off-line engineers, then design flexibility is maintained, but accuracy and completeness are difficult to ensure
Solution Approach 1:
The patent implements feedback through the systematic generation and verification of truth value tables. The truth value table generation module creates a complete mapping of all possible condition combinations to output results, providing feedback on whether all conditions are properly covered. The information simplification module then processes this feedback to simplify the logic while maintaining accuracy. This feedback mechanism ensures manufacturing precision in logic programming without sacrificing ease of operation, as the system guides the programming process through structured steps.
Data Source
AI summary
Disclosed are a method and system for redundancy switch between two controllers for supplementary damping of a governor, relating to the technical field of control methods. The method includes acquiring a participation condition according to an output result, listing the participation condition in a truth value table and supplementing correlation logic; outputting the correlation logic as an image language, and simplifying the image language; and acquiring switch logic by a simplified image language, and transforming the switch logic into a programming language of the controller. A complex control relation can be decomposed in the disclosure, so that the difficulty can be reduced, and a correct and comprehensive control purpose can be achieved. Moreover, the method has universality.