Automated Driving Control via Server-Mediated Acceleration Commands

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Solution Overview

Problem

Conventional driving assist systems fail to synchronize the movement timing and acceleration of multiple vehicles effectively, leading to traffic congestion and increased fuel consumption, as each vehicle has unique performance characteristics and driving styles.

Innovation Solution

An automated driving integrated control system that receives vehicle information, including brake-specific fuel consumption data, to calculate a common acceleration command value for all vehicles, ensuring synchronized movement and reduced fuel consumption through wireless communication and onboard control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If each vehicle operates independently with its own driving style and performance characteristics, then each vehicle can maintain its individual driving characteristics, but multiple vehicles cannot synchronize their movement timing and acceleration effectively

Engineering Contradiction:

Improveindividual driving characteristicsVSAvoidsynchronization of movement timing

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces a server as an intermediary that receives vehicle information from multiple vehicles, calculates appropriate acceleration command values considering individual vehicle characteristics (brake specific fuel consumption, brake specific power consumption), and transmits these commands back to vehicles. This mediator enables synchronized movement while respecting individual vehicle differences.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system changes the control parameter from individual vehicle-independent operation to server-coordinated acceleration command values. By calculating and transmitting specific acceleration commands based on vehicle characteristics and traffic conditions, the system achieves synchronized movement timing while adapting to each vehicle's performance parameters.

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If conventional driving assist systems allow vehicles to operate independently, then system complexity remains low, but traffic congestion occurs and fuel consumption increases

Engineering Contradiction:

Improvesystem structureVSAvoidfuel consumption

Core Design Contradiction:

Device complexityVSLoss of energy

Solution Approach 1:

The system implements a feedback loop where vehicles transmit their current state (position, brake specific fuel consumption, brake specific power consumption) to the server, which calculates optimal acceleration commands and transmits them back. This feedback mechanism enables coordinated control that reduces fuel consumption while maintaining manageable system complexity through centralized processing.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The server performs multiple functions: receiving vehicle information, calculating acceleration command values based on individual vehicle characteristics, and transmitting control commands. This multi-functional centralized system achieves fleet-wide fuel efficiency optimization without requiring complex individual vehicle modifications.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of operation

If vehicles accelerate and move independently based on individual driving styles, then ease of operation is maintained, but movement timing and acceleration cannot be synchronized across multiple vehicles

Engineering Contradiction:

Improvedriving operationVSAvoidsynchronization of acceleration

Core Design Contradiction:

Ease of operationVSSpeed

Solution Approach 1:

The server acts as a mediator that receives vehicle information, calculates appropriate acceleration command values considering individual vehicle characteristics, and transmits these commands to vehicles. This enables synchronized acceleration timing while the system handles the complexity of coordination, maintaining ease of operation for individual vehicles.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system transitions from independent vehicle acceleration based on individual driving styles to server-coordinated acceleration command values. By calculating and transmitting specific acceleration commands based on vehicle characteristics and traffic conditions, the system achieves synchronized acceleration while adapting to each vehicle's performance parameters.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11106217B2Automated driving integrated control apparatus, automated driving integrated control system, and vehicle control apparatus

Publication Date: 2021.08.31 SUBARU CORP

AI summary

An automated driving integrated control apparatus includes: a server side reception processer; a command value calculator; and a server side transmission processer. The server side reception processer receives a vehicle information including at least an information of a current position and an information of a brake specific fuel consumption or a brake specific power consumption from a vehicle. The command value calculator obtains a driving force reference value on a basis of at least the information of the brake specific fuel consumption or the brake specific power consumption in the received vehicle information, and calculates an acceleration command value for an automated driving on a basis of the driving force reference value. The server side transmission processer transmits the calculated acceleration command value to each vehicle.