Vehicle Dynamic Control Apparatus Controllable Range Optimization

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Solution Overview

Problem

Existing vehicle dynamic control systems fail to consider the controllable range of each controlled object, leading to control requests exceeding performance limitations and suboptimal control of lateral, longitudinal, and pitching motions.

Innovation Solution

A vehicle dynamic control apparatus that includes an availability obtainer to determine the controllable range of each controlled object, allowing the control requester to generate request values that do not exceed performance limitations, optimizing vehicle dynamic control based on the availability of each object.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If control requests are generated without considering controllable range, then control responsiveness is improved, but control reliability deteriorates due to requests exceeding performance limitations

Engineering Contradiction:

Improvecontrol responsivenessVSAvoidcontrol reliability

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The availability obtainer performs preliminary determination of controllable ranges for each controlled object before the control requester generates control requests. This advance preparation ensures that subsequent control requests are formulated within performance limitations, preventing reliability issues while maintaining responsive control.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The availability obtainer acts as an intermediary between the control requester and controlled objects. It provides controllable range information to the control requester, enabling the requester to generate appropriate control requests without directly querying each controlled object's limitations, thus maintaining both responsiveness and reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stability of the object's composition

If controlled objects are activated successively to compensate insufficient controlled variables, then control stability is improved, but control productivity deteriorates due to delayed response in emergency situations

Engineering Contradiction:

Improvecontrol stabilityVSAvoidcontrol productivity

Core Design Contradiction:

Stability of the object's compositionVSProductivity

Solution Approach 1:

The system dynamically determines the activation order of controlled objects based on real-time controllable range availability. Instead of a fixed successive activation sequence, the control requester can activate multiple controlled objects simultaneously or in optimized sequences according to their current availability, achieving both stability and high productivity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The controllable range parameters of controlled objects change over time based on system state. The availability obtainer continuously updates these parameters, enabling the control requester to adapt the activation strategy dynamically - using successive activation when appropriate and parallel activation when urgency demands, thus balancing stability and productivity.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If multiple controlled objects are controlled without considering individual availability, then control versatility is improved, but control precision deteriorates due to suboptimal control allocation

Engineering Contradiction:

Improvecontrol versatilityVSAvoidcontrol precision

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The system applies local quality by determining controllable ranges individually for each controlled object based on its specific characteristics and current state. The control requester then allocates control tasks to appropriate objects based on their local availability, ensuring optimal precision for each controlled object while maintaining overall system versatility.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The availability obtainer may determine controllable ranges that are more restrictive than absolute minimum requirements, providing a safety margin. This partial action approach ensures that control requests remain well within performance limitations, improving precision while the system maintains versatility through alternative controlled objects.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS9180862B2Vehicle dynamic control apparatus and vehicle dynamic control system using the same

Publication Date: 2015.11.10 DENSO CORP

AI summary

A vehicle dynamic control apparatus is designed to control a plurality of controlled objects based on a first parameter associated with a motion of a vehicle in a same direction to fulfill a request value of a second parameter associated with the motion of the vehicle in the same direction and outputted from a control requester. The vehicle dynamic control apparatus includes an availability obtainer configured to obtain an availability of the first parameter of each of the controlled objects, and to output the availability of the first parameter of each of the controlled objects to the control requester.