Remote Control Delay Compensation for Stable Plant Equipment Control
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Solution Overview
Problem
Control systems face instability due to fluctuations in communication delays between remote and local control apparatuses, leading to suboptimal control operations in equipment management, particularly in industrial and energy-related plants.
Innovation Solution
A control system that incorporates a remote-control apparatus and a local-control apparatus, utilizing machine learning to calculate and adjust control values based on measured communication delays, employing a model trained with algorithms like KDPP to optimize control operations despite delay fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If communication between remote-control apparatus and local-control apparatus is used for equipment management, then control operations can be performed remotely, but control stability deteriorates due to communication delay fluctuations
Solution Approach 1:
The system performs preliminary actions by calculating multiple candidate control values in advance for different delay scenarios before the actual control execution. The remote-control apparatus computes control values assuming various delay amounts occur, stores these pre-calculated values, and then selects the appropriate pre-computed control value based on the actual delay that occurs, thereby ensuring stable control despite delay fluctuations.
Solution Approach 2:
The system dynamically adapts to changing communication conditions by making the control value selection process adaptive to actual delay amounts. Instead of using a fixed control value, the system dynamically selects from multiple pre-calculated control values based on the measured actual delay, allowing the control system to respond flexibly to varying communication conditions while maintaining stability.
2Reliability
If multiple control values are calculated for different delay amounts, then control stability improves, but calculation complexity increases
Solution Approach 1:
The system performs the computationally intensive work of calculating multiple control values in advance during a preliminary calculation phase. By pre-computing control values for various delay scenarios and storing them, the system avoids performing complex calculations in real-time during actual control execution, instead simply selecting from pre-computed values based on measured delay.
Solution Approach 2:
The system creates multiple copies of control values for different delay scenarios rather than calculating a single control value. These copied control values are stored in advance and selected based on actual delay conditions, replacing the need for complex real-time calculation with simpler selection from pre-computed copies.
3Manufacturing precision
If control values are adjusted based on actual delay amounts, then control precision improves, but processing time increases
Solution Approach 1:
The system performs the time-consuming adjustment calculations in advance by pre-computing control values for various delay amounts. During actual control execution, the system only needs to measure the delay and select the corresponding pre-computed control value, dramatically reducing processing time while maintaining the precision benefits of delay-based adjustment.
Solution Approach 2:
The system dynamically selects from pre-computed control values based on actual delay measurements rather than performing dynamic calculations in real-time. This dynamic selection approach maintains control precision by adapting to actual delay conditions while avoiding the time penalty of real-time recalculation.
Data Source
AI summary
[Solving means] A remote-control apparatus, including a measurement value receiving unit for receiving a measurement value related to equipment from a local-control apparatus configured to control the equipment; a calculating unit for calculating a control value corresponding to the measurement value received by the measurement value receiving unit and a delay amount, by using a model configured to calculate a control value that should be used for control of the equipment when there is caused control delay including communication delay with the local-control apparatus from a delay amount corresponding to the control delay and a measurement value; and a control value transmitting unit for transmitting the control value calculated by the calculating unit to the local-control apparatus, is provided. [Selected drawing]FIG. 1