This article explores the concept of virtual instrument technology and delves into its composition, advantages, and application in the design of a vibration reduction experimental system. Vibration is a common phenomenon in nature and engineering, making vibration analysis an essential part of various technological research and design processes. With advancements in microelectronics, computer technology, and networking, measuring instruments have evolved from analog to digital and intelligent systems, culminating in the development of virtual instruments. These instruments offer user-defined functions, strong scalability, and advanced signal processing capabilities.
Virtual instrument technology integrates the measurement and control capabilities of computers with instrument hardware through software, enabling users to operate them via a graphical interface, similar to traditional instruments. The system typically consists of three main modules: data acquisition, data analysis, and result display, supported by a combination of computer hardware, application software, and instrument components.
One of the key advantages of virtual instruments is their flexibility and reconfigurability. Unlike traditional instruments, which are limited in functionality, virtual instruments allow users to modify or expand features through software changes. This makes them highly adaptable and suitable for a wide range of applications.
In addition to theoretical discussions, this paper presents a detailed mathematical model for vibration analysis, focusing on nonlinear behavior and composite materials. It also includes simulation studies using ANSYS to analyze the structural strength of a digital camera's internal lens bracket. The results show that the material properties and design meet the required performance standards.
The paper further describes the design of a vibration reduction experimental system based on LabVIEW. It outlines the overall system structure, including the two-degree-of-freedom vibration device, vibration excitation system, data acquisition system, and data analysis system. Each component is explained in detail, highlighting how they work together to study dynamic vibrations and damping effects.
Finally, the conclusion emphasizes the effectiveness of the experimental system in observing and analyzing vibration phenomena. Due to its low cost and rich signal processing capabilities, it is not only suitable for mechanical engineering but can also be used in physics and sensor-related disciplines. The flexibility of LabVIEW allows students to customize and enhance the system for more comprehensive experiments.
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