Inertia Drive Control for Lane-Specific Speed Reduction
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Solution Overview
Problem
Current inertia drive control systems in eco-friendly vehicles do not effectively differentiate between road types and lanes, leading to issues such as rear vehicle obstruction during lane changes and speed discrepancies at interchanges, junctions, speed cameras, and tollgates, resulting in inefficient fuel economy and driver discomfort.
Innovation Solution
Implement advanced inertia drive control methods that detect speed reduction events and perform lane division-based control, switching between lane change and lane maintenance modes to minimize drive obstruction and optimize speed reduction, using vehicle-to-vehicle communication and sensors to adjust motor torque and speed control dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If inertia drive control is performed without lane division, then fuel efficiency is improved through speed reduction, but rear vehicle obstruction occurs during lane changes and speed discrepancies arise at interchanges and junctions
Solution Approach 1:
The control system segments the road into multiple lanes and applies different inertia drive control strategies to each lane. The lane division unit divides the road according to lane information, and the control execution unit applies appropriate speed reduction control based on the current lane and target lane, preventing rear vehicle obstruction while maintaining fuel efficiency.
Solution Approach 2:
The system applies different control characteristics to different lanes. For example, in the current lane, speed reduction is controlled to avoid obstruction, while in target lanes, different speed profiles are applied. This local differentiation resolves the contradiction between fuel efficiency and operational smoothness.
2Loss of energy
If speed reduction is applied in higher lanes at interchanges and junctions, then fuel economy is improved, but drive obstruction occurs and speed discrepancies arise against lower-lane vehicles
Solution Approach 1:
The system detects surrounding vehicles and their speeds, then adjusts the inertia drive control accordingly. When a rear vehicle is detected, the control execution unit modifies the speed reduction profile to prevent obstruction, while still achieving fuel economy goals through coordinated multi-vehicle control.
Solution Approach 2:
The control system dynamically adjusts speed reduction profiles based on real-time lane position and surrounding vehicle conditions. The lane change unit dynamically determines optimal speed profiles for each lane, allowing the system to adapt to changing traffic conditions and prevent drive obstruction.
3Device complexity
If inertia drive control is performed without road type differentiation, then control simplicity is maintained, but excessive speed reduction occurs at speed cameras and tollgates
Solution Approach 1:
The system segments road types into categories (e.g., expressway, highway, urban road) and applies different inertia drive control parameters to each type. The lane division unit identifies road type based on lane information, and the control execution unit adjusts speed reduction profiles accordingly, preventing excessive speed reduction while maintaining reasonable system complexity.
Data Source
AI summary
A method for inertia drive control is provided. The method includes performing advanced inertia drive control by an inertia drive controller. The controller detects a speed reduction event during road driving of a vehicle, lane division together with road type division for a road, and performs inertia drive control guide and the inertia drive control based on drive conditions of lane change and lane maintenance.