Movable System Single Motor Differential Steering
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Solution Overview
Problem
Existing movable systems are costly and lack versatility in application areas, requiring multiple motors for each wheel pair and lacking efficient steering mechanisms for tight spaces.
Innovation Solution
A movable system with a single electric drive motor, differential, and actuator for variable torque distribution between two wheels, allowing independent control and steering via a split wheel axle configuration, which can rotate around a perpendicular axis for precise maneuverability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple individual motors are used for each wheel, then each wheel can be controlled independently, but the system becomes expensive and complex
Solution Approach 1:
The single motor is segmented through the differential mechanism, which divides the torque output into two separate wheel drives. This allows independent control of each wheel while using only one motor, resolving the contradiction between independent wheel control and system complexity
Solution Approach 2:
The differential acts as an intermediary mechanism between the single motor and the two wheels. It mediates the torque distribution, enabling independent wheel control through torque variation on one side while the other side receives compensating torque, thus avoiding the need for multiple motors
2Ease of manufacture
If a single electric drive motor is used with differential torque distribution, then cost is reduced, but precise steering control in tight spaces becomes challenging
Solution Approach 1:
The system dynamically adjusts torque distribution between wheels through the actuator-controlled differential. During steering maneuvers, torque is dynamically varied to provide precise control in tight spaces, while maintaining cost-effectiveness through single motor architecture
Solution Approach 2:
The actuator changes the torque distribution parameter dynamically based on steering requirements. By adjusting the torque split between wheels, the system achieves precise steering control in tight spaces while maintaining the cost advantage of a single motor system
3Adaptability or versatility
If wheels are arranged in pairs on parallel axles, then the system can rotate around a perpendicular axis for maneuverability, but the structure becomes more complex
Solution Approach 1:
The parallel axle configuration with differential torque distribution serves multiple functions: it enables rotation around the perpendicular axis for maneuverability, maintains structural simplicity through shared axles, and provides a platform for various application scenarios, thus achieving versatility without excessive complexity
Data Source
AI summary
A displaceable system is provided including at least one set of at least two wheels arranged in pairs for movement in a plane, the set being disposed on at least one wheel axle parallel to the plane. A single electric drive motor, a differential having variable torque distribution, and an electric servomotor are provided on the wheel axle for both wheels of a set. The electrical servomotor acts on the differential such that the torque generated by the single electric drive motor is distributed within the wheel axle individually to the wheels.