Dual-Actuation Electromechanical Microsystem for High-Amplitude Precision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electromechanical microsystems face limitations in performance across parameters such as amplitude of movement, force deployed, precision, size, energy consumption, and frequency, often failing to provide a satisfactory combination of these attributes.
Innovation Solution
The development of an electromechanical microsystem that allows for double actuation on opposite faces, featuring a design with deformable membranes and transducers that induce movement through changes in external pressure, enabling increased amplitude and force while reducing energy consumption, and capable of operating over long distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing microsystem designs are used, then device complexity is reduced, but performance across multiple parameters (amplitude, force, precision, energy consumption) is unsatisfactory
Solution Approach 1:
The device is segmented into two separate actuation faces (first and second opposite faces), each with independent electromechanical transducers. This segmentation allows each face to be optimized independently while achieving combined performance benefits that resolve the contradiction between improved performance and device complexity.
Solution Approach 2:
The invention transitions from single-face actuation to dual-face actuation, adding a spatial dimension to the actuation architecture. By utilizing both opposite faces of the cavity for actuation, the system achieves enhanced performance in amplitude and force while distributing complexity across two symmetric interfaces.
2Force
If single-face actuation is used, then device complexity is minimized, but actuation amplitude and force are limited
Solution Approach 1:
The total actuation force and amplitude requirements are segmented across two independent actuation faces. Each face contributes partially to the overall performance, and their combined effect achieves the desired force and amplitude levels without requiring a single overly complex actuation mechanism.
Solution Approach 2:
The actuation capabilities of two opposite faces are merged to achieve combined force and amplitude output. The synergistic effect of dual-face actuation produces greater total force and displacement than a single face could achieve alone, resolving the contradiction between force requirements and device complexity.
3Measurement precision
If larger displacement amplitude is achieved, then measurement precision for large-amplitude detection is improved, but energy consumption increases
Solution Approach 1:
The dual-face actuation system enables periodic bidirectional movement, allowing the system to achieve large detection amplitudes through controlled oscillation between faces. This periodic action on both faces allows energy-efficient large-amplitude operation by utilizing the elastic recovery and alternating actuation of both sides.
Solution Approach 2:
The deformable medium and membranes provide self-service by enabling energy-efficient large-amplitude movement through their elastic properties. The system leverages the inherent elasticity of the deformable components to achieve large detection ranges without proportionally increasing energy consumption, as the elastic elements store and release energy during each actuation cycle.
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 proposed microsystem achieves improved performance by doubling actuation amplitude and maintaining energy efficiency, suitable for diverse applications requiring large travel and precise movement, while being compact and adaptable.
Implementation Method 1
a deformable medium 14 contained in a hermetic manner within said cavity 13, said deformable medium 14 being capable of transmitting a force exerted on it by the moving part 111a, 111b of each electromechanical transducer 11a, 11b
Implementation Method 2
Each electromechanical transducer 11a, 11b comprises a moving part 111a, 111b capable of moving or being moved between at least two positions... The microelectromechanical system 1 is configured so that the movement of each electromechanical transducer 11a, 11b is a function of the change in external pressure
Data Source
Figure 1A~1B
Figure 1C
Figure 2A
AI summary
The invention relates to a microelectromechanical system 1 comprising two electromechanical transducers 11a and 11b, a first deformable membrane 12, and a cavity 13 hermetically containing a deformable medium 14 that maintains a constant volume under the action of a change in external pressure. The first membrane forms at least part of a first wall of the cavity and has a free zone 121a to deform. The free zone cooperates with an external element 2 such that its deformation induces, or is induced by, a movement of the external element. The electromechanical transducers are configured such that: - a first electromechanical transducer 11a forms part of said first wall 131 of the cavity, and - a second electromechanical transducer 11b forms at least part of the wall 132 opposite said first wall 131 of the cavity.