Pendulum Wheel Suspension for Collision Damping
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Solution Overview
Problem
Existing wheel suspensions for electrically driven devices face challenges in quantitatively detecting and implementing the external force applied by a machine operator, leading to potential amplification of collisions due to inertia, which requires additional and costly sensor systems to prevent damage.
Innovation Solution
Incorporating a stable pendulum into the wheel suspension that connects the wheel axle to a support element, allowing gravity to maintain a neutral position until a shear force deflects it, which is then detected by sensors and counteracted by the control circuit of the electric drive to support the shear force and absorb collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If control electronics are used to control the electrical drive, then the device can be set in motion with high force requirements, but the operation becomes complex requiring in-depth knowledge of control electronics
Solution Approach 1:
The system automatically detects external forces through the pendulum's deflection and implements the appropriate drive response without requiring the operator to understand or configure control electronics. The pendulum mechanism and control system work together autonomously to translate mechanical input into driven motion.
2Ease of operation
If simple controls are used to convert shear force, then the device responds to manual input, but collision incidents are amplified due to the natural influence of the machine operator and inertia
Solution Approach 1:
The pendulum provides continuous feedback about the device's motion state and external forces. The control system uses this feedback to modulate the electrical drive, creating a damping effect that counteracts collision incidents and prevents force amplification while maintaining simple manual controls.
3Object-affected harmful factors
If additional sensor systems are incorporated to detect collisions, then collision damage can be minimized, but the device complexity and cost increase
Solution Approach 1:
The pendulum serves multiple functions: it acts as a mechanical indicator of external forces, a sensor for detecting collisions and operational state, and a reference for the control system. This multi-functionality eliminates the need for separate collision detection sensors, reducing system complexity and cost.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables both force amplification and collision-damping effects, reducing the need for complex sensor systems and allowing for cost-effective operation by automatically counteracting deflections and supporting manual movement impulses.
Implementation Method 1
a stable pendulum is understood to refer to a pendulum which, due to its suspension and mounting, is adjusted to a stable starting position by the gravity of the device
Data Source
AI summary
The disclosure relates to a wheel suspension of a device having an electrical drive of a wheel for supporting a manual movement impulse. The wheel suspension includes a connector piece movably or bendably arranged between a support element or support frame connected to the device and between an interior stator of an electrical drive, wherein the connector piece is held in a starting position due to the gravity of the device, without other influencing forces. The wheel suspension also includes at least one sensor that detects a deflection of the connector piece, and a control device designed such that the control device together with the electrical drive counteracts a deflection or bending of the connector piece.