Electrodynamic Actuator with Distributed Resonance Frequencies
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electrodynamic actuators, transducers, and speakers often exhibit a pronounced resonance rise, limiting design freedom and making it challenging to achieve a favorable frequency response.
Innovation Solution
The electrodynamic actuator is designed with multiple magnet subsystems and arms that form distinct oscillating systems with different resonance frequencies, allowing for distributed resonance rises and avoiding a single sharp resonance, thereby enhancing design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single magnet system is used in the electrodynamic actuator, then the device structure is simple, but a pronounced resonance rise occurs that limits design freedom and degrades frequency response
Solution Approach 1:
The magnet system is divided into multiple magnet subsystems (at least two), each forming a separate oscillating system with distinct resonance frequencies. This segmentation distributes the resonance characteristics across multiple frequencies rather than concentrating them at a single frequency, thereby reducing the pronounced resonance rise and improving frequency response quality.
2Adaptability or versatility
If multiple magnet subsystems with different resonance frequencies are implemented, then design freedom and frequency response flatness are improved, but the device complexity increases
Solution Approach 1:
The magnet system is segmented into multiple independent magnet subsystems that can be configured with different resonance frequencies. Each subsystem includes magnet elements and associated arms that form distinct oscillating systems, enabling designers to distribute resonance characteristics across multiple frequencies and achieve flatter frequency response with greater design flexibility.
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 approach enables the achievement of a flat frequency response and provides more design freedom by controlling resonance frequencies within a specific ratio, resulting in improved performance and efficiency of the electrodynamic transducer and speaker.
Implementation Method 1
a magnet system being designed to generate a magnetic field transverse to the electrical conductor in the loop section
Implementation Method 2
a first oscillating system with a first resonance frequency fres1 and a second oscillating system with a second resonance frequency fres2, which is different from the first resonance frequency fres1
Data Source
AI summary
An electrodynamic actuator (1a . . . 1f) is disclosed, which comprises at least one voice coil (3a, 3b, 4a . . . 4c, 14a, 14b), a magnet system (9a, 9b) and a plurality of arms (7a . . . 7h) movably coupling the at least one voice coil (3a, 3b, 4a . . . 4c, 14a, 14b) and the magnet system (9a, 9b) or a movable part (10) of the magnet system (9a, 9b). A first magnet subsystem (11a) and a first part (12a) of the arms (7a . . . 7h) form a first oscillating system (13a) with a first resonance frequency fres1, and a second magnet subsystem (11b) and a second part (12b) of the arms (7a . . . 7h) form a second oscillating system (13b) with a second resonance frequency fres2, which is different from the first resonance frequency fres1. Additionally, an electrodynamic transducer (16a, 16b), an output device and a speaker (19) with such an electrodynamic actuator (1a . . . 1f) is disclosed.