Vehicle ADAS Arbitration Control for Fast New Request Adoption

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Solution Overview

Problem

Existing advanced driver assistance systems (ADAS) may experience slowness in control when both an existing and a new request are received from ADAS applications, leading to delays in adopting new requests until existing ones terminate.

Innovation Solution

A control apparatus and method that excludes existing requests scheduled to terminate from arbitration, allowing new requests to be easily adopted and reducing slowness in control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the manager adopts a minimum request among multiple requests from ADAS applications, then the vehicle control safety is improved, but the control responsiveness deteriorates when existing requests are about to terminate

Engineering Contradiction:

Improvevehicle control safetyVSAvoidcontrol responsiveness

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary identification of requests scheduled to terminate before arbitration. By marking these requests in advance and excluding them from arbitration, the system prepares the arbitration process to quickly adopt new requests without waiting for termination of existing requests, thus reducing control slowness while maintaining safety through the minimum request adoption principle for non-terminating requests

Inventive Principle:

Principle #10Preliminary action

2Stability of the object's composition

If the manager waits for existing requests to terminate before adopting new requests, then the control stability is improved, but the control speed deteriorates

Engineering Contradiction:

Improvecontrol stabilityVSAvoidcontrol speed

Core Design Contradiction:

Stability of the object's compositionVSSpeed

Solution Approach 1:

The arbitration process is segmented into two distinct paths: one for requests scheduled to terminate (excluded from arbitration) and another for other requests (subject to minimum request arbitration). This segmentation allows new requests to be adopted immediately when existing requests are terminating, improving control speed, while the minimum request principle continues to apply to non-terminating requests, maintaining control stability

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12280788B2Control apparatus, manager, electronic control unit, system, control method, non-transitory computer-readable storage medium storing program, and vehicle

Publication Date: 2025.04.22 TOYOTA JIDOSHA KK

AI summary

A manager to be mounted on a vehicle includes a reception unit that receives a plurality of kinematic plans from a plurality of ADAS applications, an arbitration unit that performs arbitration of the kinematic plans, a calculation unit that calculates a motion request based on a result of the arbitration at the arbitration unit, and a distribution unit that distributes the motion request to at least one actuator system. The reception unit receives information related to arbitration targets of the arbitration unit from the ADAS applications.