Remote Control Apparatus Delay Jitter Stabilization
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Solution Overview
Problem
Remote control systems over communication networks with delay jitter experience instability due to unpredictable communication delays and jitters, leading to errors in state prediction and control input delivery.
Innovation Solution
A remote control apparatus that measures communication delays, generates probability distributions, predicts arrival patterns of control inputs, calculates control input sets, and determines optimal control inputs through statistical processing to stabilize the system despite delay jitter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If state prediction control is used to stabilize remote control system, then system stability is improved, but prediction accuracy deteriorates due to delay jitter
Solution Approach 1:
The patent performs preliminary actions by generating multiple candidate arrival patterns and calculating corresponding control input sets before determining the final control input. This advance preparation allows the system to account for various possible delay scenarios, improving prediction accuracy despite jitter by pre-computing control strategies for multiple potential futures.
Solution Approach 2:
The patent changes parameters by considering multiple arrival patterns with different delay characteristics simultaneously. Instead of relying on a single delay estimate, the system varies the delay parameters across multiple candidate patterns, calculates control inputs for each, and then determines the final control input based on statistical processing of these varied parameters, thereby maintaining accuracy under jitter conditions.
2Measurement precision
If multiple arrival patterns are generated to account for delay jitter, then prediction accuracy is improved, but computational complexity increases
Solution Approach 1:
The patent implements feedback by performing statistical processing on the control input sets generated from multiple arrival patterns. The system uses the distribution characteristics of these control inputs (such as mean, variance, or other statistical metrics) to determine the final control input, creating a feedback mechanism that consolidates information from multiple complex calculations into a single actionable decision, thereby managing computational complexity.
Solution Approach 2:
The system performs self-service by automatically selecting the appropriate control input from the generated sets based on statistical criteria without requiring external intervention. The statistical processing mechanism enables the system to self-determine the optimal control action from multiple candidates, reducing the need for complex external control logic while maintaining high prediction accuracy.
3Ease of operation
If control input is transmitted over wireless IP network, then remote control capability is enabled, but communication delay and jitter occur
Solution Approach 1:
The patent applies preliminary action by predicting the arrival time of control inputs at the control target before actual transmission completion. The system calculates expected arrival times based on measured delay characteristics and uses these predictions to prepare appropriate control strategies in advance, compensating for the inherent network delay and enabling effective remote control despite time loss.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of a probability distribution model that mediates between the control input transmission and the actual system control. This intermediary layer accounts for network delay and jitter by generating multiple candidate arrival patterns, allowing the system to bridge the gap caused by communication delays and maintain accurate control.
Data Source
AI summary
A remote control apparatus measures a communication delay in a communication network, generates a probability distribution of the communication delay, generates, based on the probability distribution of the communication delay, a plurality of arrival patterns, including an arrival time of a control input at a control target, predicts a state of the control target at a time of arrival of the control input, calculates a control input set by calculating a plurality of control inputs corresponding respectively to the plurality of states predicted, determines a control input to be outputted to the control target, based on a result of statistical processing applied on the control input set calculated.