Design of a quasi-zero-stiffness based sensor system for the measurement of absolute vibration displacement of moving platforms

摘要: This study presents the analysis and design of a novel sensor system for measuring absolute vibration displacement moving platforms based on concept quasi-zero-stiffness (QZS). The is constructed using positive- negative-stiffness springs, which make it possible to achieve an equivalent QZS consequently create broadband vibration-free point measurement in platforms. Theoretical conducted influence structure parameters performance. A prototype designed can avoid drawback instability existing systems with negative stiffness, corresponding data-processing software developed fulfill time domain measurements. Both simulation experimental results verify effectiveness this system.