Vehicle Control Timing Using Estimated Realization Delays

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Solution Overview

Problem

Modern vehicles with advanced driver-assistance systems face delays in responding to driving instructions due to communication and actuator delays, leading to ineffective or dangerous outcomes.

Innovation Solution

A system and method for determining the type and timing of vehicle control commands based on estimated realization delays, using a model prediction control system to account for varying delays in vehicle systems, allowing for accurate and cohesive command execution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If vehicle control commands are issued without accounting for realization delay, then the control system responds quickly to driving situations, but the vehicle systems act at incorrect times leading to ineffective or dangerous results

Engineering Contradiction:

Improveresponse speedVSAvoidcommand execution accuracy

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The system performs preliminary calculation of realization delays for multiple prospective control commands before issuing them. By determining the delay characteristics in advance and using this information to adjust issue timing, the system ensures commands are executed at the intended moments despite communication and actuator delays

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts the issue time of control commands based on calculated realization delays. Rather than using fixed timing, the issue time is adapted in real-time according to the specific delay characteristics of each command and its relationship to subsequent commands, ensuring accurate execution timing

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If multiple control commands are issued in sequence without delay consideration, then the control system can handle complex driving situations, but the commands may not be executed in the intended order or timing

Engineering Contradiction:

Improvehandling capabilityVSAvoidcommand execution timing accuracy

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system calculates realization delays for multiple prospective control commands in advance, before they are issued. This preliminary analysis allows the system to determine optimal issue times for each command in the sequence, ensuring they are executed in the intended order and timing despite varying delays

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses the calculated realization delay information as feedback to adjust the issue timing of control commands. By incorporating delay measurements into the control decision-making process, the system compensates for timing variations and maintains accurate execution sequences

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12351177B2Systems and methods for determining vehicle control based on estimated realization delay

Publication Date: 2025.07.08 TOYOTA JIDOSHA KK

AI summary

Systems, methods, and other embodiments described herein relate to determining a type and an issue time of a vehicle control command based on an estimated realization delay. In one embodiment, a method includes identifying a first realization delay associated with a first control command and identifying a second realization delay associated with a second control command. The second control command is issued after the first control command is issued. The method includes issuing the first control command at an issue time that is based on the first realization delay and the second realization delay, and realizing the first control command on a vehicle.