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随着振动环境试验的迅速发展,电动振动台越来越引起广泛的重视和应用,它不仅应用于各种产品的可靠性检验,而且还应用于产品特性的测定和振动环境的预测和验证。目前电动振动台的设计方法已趋于定型,许多文章介绍了电动振动台的原理,结构和设计方法。本文着重对涉及到配套功率放大器设计及如何最佳运用电动振动台的三个典型特性,从物理意义上较为明确的基本演算式中加以推导和分析,并对实际振动台进行了特性的测试和比较。结果表明,按本方法求得的特性表达式和曲线,虽在演算上由于篇幅有限,缺乏数学上的严密推导,但阐明了如何将理论具体地应用于实际的工程设计。期望有助于电动振动台的设计、研制和运用。
With the rapid development of vibration environment test, electric shaker has attracted more and more attention and application. It is not only applied to the reliability test of various products, but also applied to the determination of product characteristics and the prediction and verification of vibration environment. At present, the design method of electric shaker has tended to be finalized, and many articles introduce the principle, structure and design method of electric shaker. This article focuses on the three typical characteristics that involve the design of the matched power amplifier and how to make the best use of the electric shaker. It is deduced and analyzed from the basic calculation formulas that are more explicit in the physical sense. The characteristics of the actual shaker are tested and analyzed. Compare The results show that the characteristic expressions and curves calculated by this method, though lacking mathematically rigorous derivation in the calculation due to limited space, illustrate how to apply the theory to practical engineering design specifically. Expected to contribute to the design, development and application of electric shakers.