Voice Coil Direct-Drive Platform for Vibration Isolation and Leveling
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Solution Overview
Problem
Traditional vibration isolation and leveling devices face challenges in achieving high-efficiency vibration isolation and high-precision leveling while being complex, bulky, and heavy, making them unsuitable for space and weight-limited applications.
Innovation Solution
A voice coil motor direct-drive active vibration isolation and leveling integrated platform is introduced, featuring a moving platform, base, and vibration isolation and leveling composite mechanism with a motion constraint component, load unloading component, and negative stiffness component, which allows for dynamic decoupling of motion axes and a compact, direct-drive design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional series leveling mechanism is used, then leveling function is provided, but motion inertia is large, output force is small, and accumulated errors occur
Solution Approach 1:
The patent replaces the traditional mechanical series leveling mechanism with a voice coil motor direct-drive system. The voice coil motor uses electromagnetic force to directly drive the moving platform, eliminating complex mechanical linkages, reducing motion inertia, and avoiding accumulated errors from multiple mechanical joints. This substitution of mechanical system with electromagnetic actuation resolves the contradiction between leveling precision and mechanism complexity.
2Manufacturing precision
If traditional parallel leveling mechanism is used, then leveling function is provided, but complex kinematics and dynamics calculations and decoupling are required
Solution Approach 1:
The patent replaces the traditional parallel mechanism with voice coil motors that provide direct electromagnetic actuation. This eliminates the need for complex kinematics and dynamics calculations and decoupling operations, as each voice coil motor independently controls a specific degree of freedom through simple electromagnetic force generation, significantly improving control convenience while maintaining leveling precision.
3Object-affected harmful factors
If vibration isolators are connected in series on the leveling platform, then vibration isolation is provided, but final leveling accuracy is affected and device becomes bulky and heavy
Solution Approach 1:
The patent merges the vibration isolation function and leveling function into a single integrated platform. The voice coil motor direct-drive system simultaneously provides vibration isolation by actively counteracting vibrations and maintains leveling accuracy through precise electromagnetic control, eliminating the need for separate series-connected vibration isolators that would compromise accuracy and increase device bulk and weight.
4Object-affected harmful factors
If vibration isolators are connected in series on the leveling platform, then vibration isolation is provided, but device becomes bulky and heavy
Solution Approach 1:
The patent merges the vibration isolation function and leveling function into a single integrated platform. The voice coil motor direct-drive system simultaneously provides vibration isolation by actively counteracting vibrations and maintains leveling accuracy through precise electromagnetic control, eliminating the need for separate series-connected vibration isolators that would compromise accuracy and increase device bulk and weight.
5Volume of moving object
If integrated design is adopted, then device compactness is improved, but motion axis decoupling becomes more difficult
Solution Approach 1:
The patent replaces complex mechanical decoupling mechanisms with independent voice coil motors for each degree of freedom. Each motor operates independently with its own electromagnetic actuation, providing natural decoupling of motion axes without requiring complex mechanical structures. This enables compact integrated design while maintaining simple control and clear motion axis decoupling.
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
This solution enables efficient vibration isolation and high-precision leveling without interfering motion axes, resulting in improved performance and accuracy, and a more compact, simpler structure.
Implementation Method 1
driving mechanism is used to drive the moving platform to perform leveling movements
Implementation Method 2
The top elastic piece can cover the top opening of the central housing in a convex and concave deformation manner
Implementation Method 3
The bottom elastic piece is disposed on the bottom of the base so as to be deformable upwardly and downwardly
Data Source
AI summary
A voice coil motor direct-driven active vibration isolation and leveling integrated platform. The voice coil motor direct-drive active vibration isolation and leveling integrated platform includes a moving platform, a base, a driving mechanism and a vibration isolation and leveling composite mechanism; the moving platform is rotatably disposed on the base around the X-axis and the Y-axis through the vibration isolation and leveling composite mechanism; the driving mechanism is used to drive the moving platform to perform leveling movement, and the force exerted by the driving mechanism on the moving platform is distributed symmetrically around the circumference of the moving platform.