Damper Rod Solenoid Assembly With Induction Plate for Ripple Control
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Solution Overview
Problem
Existing suspension systems with switchable stiffness settings experience instability and magnetic force ripple due to varying input frequencies, affecting the operational efficiency and stability of the system.
Innovation Solution
Incorporation of an induction plate within the solenoid assembly to attenuate magnetic force ripples by inducing eddy currents that counteract the magnetic field fluctuations, thereby stabilizing the system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a coil is used to generate an electromagnetic field for switching between stiffness settings, then the operational versatility is improved, but magnetic force ripple occurs due to varying input frequency
Solution Approach 1:
An induction plate is introduced as an intermediary component between the coil and the magnetic circuit. This plate attenuates the magnetic force ripple generated by the coil by providing a stable magnetic path and filtering out frequency variations, thereby maintaining system stability while preserving the switchable stiffness functionality.
Solution Approach 2:
The induction plate modifies the magnetic field parameters by redistributing magnetic flux and reducing ripple amplitude. By changing the magnetic circuit's physical parameters (adding the plate), the system maintains its ability to switch between stiffness settings while eliminating the harmful magnetic force variations.
2Adaptability or versatility
If an actuator is made movable between opened and closed positions to control fluid flow, then the adaptability is improved, but system complexity increases
Solution Approach 1:
The solenoid assembly integrates the coil, induction plate, actuator, and magnetic circuit into a single compact unit. By merging these components, the patent achieves switchable damping modes without proportionally increasing overall system complexity, as the components work together in a unified structure rather than as separate assemblies.
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 induction plate effectively reduces or eliminates magnetic force ripples, enhancing the operational efficiency and stability of suspension systems with switchable stiffness settings.
Implementation Method 1
Incorporation of an induction plate within the solenoid assembly to attenuate magnetic force ripples by inducing eddy currents that counteract the magnetic field fluctuations
Implementation Method 2
an induction plate at least partially located between the spool and the core head
Data Source
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AI summary
A suspension system of an associated vehicle. The suspension system comprises an outer reservoir tube extending along an axis between a first end and a second end and defining a chamber. A piston assembly is at least partially located in the chamber. The piston assembly includes a piston rod and a piston head. A solenoid assembly is connected to the piston rod. The solenoid assembly comprises a core including a core head and a core body. A spool extends about the core body and defines a space. A coil is wrapped around the spool within the space. An induction plate is at least partially located between the spool and the core head. As the input current is modulated the induction plate promotes the induction of eddy currents opposing the field induction attenuating the force ripples of the magnetic field buildup and decay.