Multi-Unit Road Vehicle Control for Independent Wheel-Set Steering
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Solution Overview
Problem
Multi-unit road vehicles face challenges in steering and maneuvering, especially on rough terrain or when towing multiple connected vehicles, due to the difficulty in independently controlling each vehicle unit's movement.
Innovation Solution
A multi-unit road vehicle design with multiple vehicle units, each equipped with independently controllable wheel sets and motors, allowing for separate control of rotation speed and steering position of each wheel set, enabled by a main controller that processes real-time sensor data to optimize wheel operation based on road conditions and vehicle parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single main controller is used to control all carriages in a multi-unit vehicle, then the device complexity is reduced, but the steering and maneuverability under rough road conditions deteriorates
Solution Approach 1:
The control system is segmented into multiple independent controllers, with each vehicle unit having its own controller that can independently control its wheel sets. This segmentation allows each unit to adapt to local road conditions while maintaining overall system coordination, resolving the contradiction between simplified structure and adaptive steering capability.
Solution Approach 2:
The control architecture transitions from a static, centralized control structure to a dynamic, distributed control structure where each unit can independently adjust its steering and wheel control based on real-time sensor feedback and local conditions, enabling adaptive maneuverability without excessive complexity.
2Ease of operation
If each wheel set is independently controlled by separate motors, then the steering precision and maneuverability are improved, but the device complexity increases
Solution Approach 1:
The vehicle is divided into multiple independent vehicle units, each with its own wheel set controllers. This segmentation allows independent control of each wheel set while distributing the control complexity across multiple simpler units rather than requiring one complex centralized controller.
Solution Approach 2:
Each vehicle unit is equipped with local sensors and local controllers that can independently adjust the steering and wheel control parameters based on local road conditions, providing localized adaptive control that improves overall steering precision without requiring complex global coordination.
3Quantity of substance
If multiple vehicle units are connected in a multi-unit configuration, then the transport capacity is increased, but the difficulty of steering and maneuvering increases
Solution Approach 1:
The multi-unit vehicle is segmented into independently controllable vehicle units, each with its own control system. This allows each unit to independently respond to steering inputs and road conditions, making it easier to maneuver the entire assembled vehicle compared to a rigid unified structure.
Solution Approach 2:
The connection between vehicle units allows dynamic relative movement and independent steering responses, enabling the multi-unit configuration to maneuver more easily by allowing each unit to adapt its position and orientation independently rather than requiring rigid synchronized movement.
Data Source
AI summary
A multi-unit road vehicle including multiple vehicle units, each vehicle unit (VU) of the multi-unit road vehicle may include: a VU body: at least one connecting mechanism for connecting the VUs to one another VU: two or more wheel sets. wherein each wheel set connects to a different side of the VU body: and two or more controllable motors, each motor configured to controllably operate one or more wheels of a specific wheel set of the respective VU. Each motor of each wheel set of each VU may be independently and separately controllable. at least for independent and separate controlling of rotation speed of each of the one or more wheels of each wheel set for separate and independent wheels operation such as wheels rotation speed of each side of the VU.