Swivel Drive System Omnidirectional Movement
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Solution Overview
Problem
Conventional drive systems limit vehicle movement to directions collinear with the rolling orientation of wheels or tracks, making it difficult to operate in constricted settings without aligning the vehicle in the desired direction.
Innovation Solution
A swivel drive system with multiple wheel assemblies that can rotate relative to the drive module axis and independently rotate about their own axis, allowing for simultaneous rotation and synchronized movement to generate driving force in any direction, enabled by a drive control system like joysticks to control speed and direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional drive systems are used with wheels oriented in fixed directions, then the structure is simple and easy to manufacture, but the vehicle can only move in directions collinear with the wheel rolling orientation, limiting operational flexibility in confined spaces
Solution Approach 1:
The wheel assemblies are made dynamically adjustable in orientation through rotation about a vertical axis, allowing the vehicle to move in any direction without physical reorientation. Each wheel assembly can be independently rotated to change its rolling direction, transforming the static wheel orientation into a dynamic, adaptable configuration that enables omnidirectional movement capability.
Solution Approach 2:
The drive system is divided into multiple independently controllable wheel assemblies, each capable of individual rotation and movement control. This segmentation allows each wheel assembly to be operated separately, with the control system adjusting the speed and direction of each assembly to achieve precise vehicle positioning and movement in any desired direction.
2Adaptability or versatility
If wheel assemblies are made separately rotatable about their own axis and mounted for rotation relative to the drive module axis, then the vehicle can move in any direction, but the control system complexity increases
Solution Approach 1:
The control system is designed with multi-functionality to handle various movement modes through a unified control interface. The system can interpret operator inputs (such as joystick movements) and automatically translate them into appropriate wheel assembly rotations and speed adjustments, providing a single control mechanism that manages multiple functions including directional control, speed regulation, and coordination of all wheel assemblies.
Solution Approach 2:
The control system incorporates feedback mechanisms that monitor the position, orientation, and movement of each wheel assembly, automatically adjusting control signals to achieve desired vehicle movement. This feedback loop simplifies operation by handling the complex coordination mathematics internally, allowing the operator to use intuitive controls while the system manages the intricate coordination required for omnidirectional movement.
3Adaptability or versatility
If multiple wheel assemblies are simultaneously rotated and synchronized to generate driving force, then directional control is improved, but the mechanical complexity and synchronization requirements increase
Solution Approach 1:
The synchronization mechanism uses feedback from sensors monitoring each wheel assembly's position and rotation state to automatically adjust control signals, ensuring all wheels coordinate their movement. This closed-loop control maintains reliable synchronization by continuously comparing actual wheel positions with desired positions and making real-time corrections, thereby ensuring dependable omnidirectional movement without mechanical complexity.
Solution Approach 2:
The patent replaces complex mechanical synchronization mechanisms with electronic control and software-based coordination. Instead of using mechanical linkages or gear systems to synchronize wheel rotations, the invention uses independent electronic motors for each wheel assembly, controlled by a computer system that calculates and commands the precise rotation and speed of each wheel to achieve synchronized omnidirectional movement, thereby eliminating mechanical synchronization complexity.
Data Source
AI summary
A swivel drive system, such as for providing a driving force for a vehicle, comprises multiple drive modules, with each drive module including a plurality of wheel assemblies mounted for rotation relative to an axis of the drive module, with each wheel assembly being separately rotatable relative to a respective axis of the wheel assembly. Simultaneous rotation of the wheel assemblies relative to the axis of the drive module and rotation of each wheel assembly about its own axis generates a driving force for the vehicle.