Controller-Encoder Pair for Information Transfer in Optimal Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current control systems are not designed to encode and transmit information through their channels, limiting their ability to communicate information from one controller to another or from control system elements to elements of another control system, and they do not utilize Shannon's operational definitions of coding-capacity and coding-compression effectively beyond communication systems.
Innovation Solution
A method for designing a controller-encoder pair in control systems that simultaneously controls the system and encodes information, allowing for the transmission of this information over the control system with arbitrary small error probability, using the concept of Control-Coding Capacity (CC-Capacity) to determine the maximum rate of information transmission while maintaining optimal performance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If control systems are designed to simultaneously control and encode information, then information transmission capability is improved, but device complexity increases
Solution Approach 1:
The patent merges the control function and information encoding function into a unified controller-encoder pair. The controller generates control inputs that simultaneously achieve control objectives and encode information signals, eliminating the need for separate control and communication components. This merging approach improves information transmission capability while managing device complexity through functional integration.
Solution Approach 2:
The controller-encoder pair is designed to perform multiple functions: it controls the dynamical system to achieve desired performance while simultaneously encoding and transmitting information through the system's channel. This multi-functionality allows the same component to serve both control and communication purposes, addressing the contradiction between improved information transmission and increased complexity.
2Loss of information
If information is transmitted through control system channels, then communication capability is improved, but reliability of control performance may deteriorate
Solution Approach 1:
The patent employs partial action by allocating a portion of the control input to encode information while maintaining sufficient control authority to achieve control objectives. The controller-encoder is designed to transmit information at a rate that does not compromise the reliability of control performance, balancing information transmission rate with control stability through optimized encoding strategies.
Solution Approach 2:
The invention changes the parameters of the control input signal to simultaneously achieve control and communication objectives. By modulating specific parameters of the control signal, the system encodes information while maintaining the control performance required for reliable system operation, thus improving communication capability without sacrificing control reliability.
3Productivity
If Shannon's coding-capacity definitions are applied to control systems, then information transmission efficiency is improved, but difficulty of implementation increases
Solution Approach 1:
The controller-encoder pair is designed to automatically achieve optimal information transmission efficiency by leveraging the inherent properties of the control system and channel. The system self-adjusts to maximize information transmission rate consistent with control performance requirements, eliminating the need for complex external optimization mechanisms and reducing implementation difficulty while maintaining high efficiency.
Data Source
AI summary
The current disclosure provides a method for transmitting encoded information signals through a control system and to a decoder. The encoded information signals are transmitted along with control signals as an encoded message. The information signals are encoded based at least in part on a control-coding capacity of the control system.