Vehicle Control Interface for Combined Driver and ADK Deceleration
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Solution Overview
Problem
There is a need for an appropriate interface between autonomous driving systems and vehicle platforms to enable effective communication and cooperation, especially when the developers of these systems are different, to ensure seamless operation and control of vehicles in autonomous and unmanned modes.
Innovation Solution
A vehicle control interface is introduced that acts as a bridge between the autonomous driving system and the vehicle platform, allowing for the integration of deceleration requests from both the driver and the autonomous system, and enabling the vehicle platform to calculate a target deceleration in various operational modes, including Vehicle Operation and Non-Vehicle Operation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vehicle control interface is introduced to integrate deceleration requests from both driver and autonomous system, then the cooperation and communication between autonomous driving system and vehicle platform is improved, but the device complexity increases
Solution Approach 1:
The vehicle control interface acts as an intermediary component between the autonomous driving system and the vehicle platform. It receives deceleration requests from both the driver (via brake pedal) and the autonomous driving system, integrates these requests, and outputs a unified control signal. This mediator approach resolves the contradiction by enabling reliable cooperation between independently developed systems while maintaining a clear, defined interface structure that prevents excessive complexity.
2Measurement precision
If the vehicle platform integrates multiple deceleration requests to calculate target deceleration, then the vehicle control precision is improved, but the control complexity increases
Solution Approach 1:
The vehicle control interface changes the parameter integration approach by systematically combining deceleration requests from multiple sources. It takes the driver's brake pedal input and the autonomous system's deceleration request as separate parameters, integrates them through defined logic, and outputs a unified target deceleration parameter. This parameter transformation approach improves control precision while managing complexity through structured parameter handling.
Data Source
AI summary
A vehicle is a vehicle on which an autonomous driving kit (ADK) is mountable. The vehicle includes: a vehicle platform (VP) that controls the vehicle in accordance with an instruction from the ADK; and a vehicle control interface that serves as an interface between the ADK and the VP. The VP receives a driver deceleration request in accordance with an amount of depression of a brake pedal by a driver, and receives a system deceleration request from the ADK through the vehicle control interface. During an autonomous mode, the VP specifies the sum of the driver deceleration request and the system deceleration request as a target deceleration of the vehicle.