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首页> 外文会议>Smart Structures and Integrated Systems Mar 3-6, 2003 San Diego, California, USA >Actuation Development and Evaluation for INSTAR - Inertially Stabilized Rifle
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Actuation Development and Evaluation for INSTAR - Inertially Stabilized Rifle

机译：INSTAR-惯性稳定步枪的致动开发和评估

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摘要

In the use of piezoelectric actuators, it is a clear choice to use stack (or d_(33) mode) architectures when very high force is required or bender (or d_(31) mode) architectures when very high displacements are needed. However, the choice isn't as clear for applications that need simultaneously moderate to high force and displacement. This paper presents one such application, INSTAR, which is posed with this dilemma. INSTAR is a novel rifle system that has an inertially stabilized barrel via an active suspension based on piezoelectric actuation. While the frequency required for this application was low (～10Hz), the displacement (+- 200 to 400 microns) and the force (22-45 N) are moderate. Two very different actuation approaches were developed, modeled, fabricated and experimentally validated within the INSTAR demonstration platform: 1) a d_(31) approach based on the Recurve architecture with focus on generating higher forces than is common for d_(31) actuators and 2) a d_(33) approach based upon a compliant mechanism designed using topology optimization with focus on providing more amplified strain than is common for d_(33) actuators. Both approaches were successful in meeting the INSTAR requirements, but each had its own advantages and disadvantages.
机译：在压电致动器的使用中，当需要非常大的力时使用堆栈（或d_（33）模式）架构，或者在需要非常大的位移时使用弯曲器（或d_（31）模式）架构是一个明智的选择。但是，对于同时需要中等到较高的力和位移的应用，选择不是很明确。本文提出了一个这样的应用程序，即INSTAR，它面临着这一难题。 INSTAR是一种新型步枪系统，通过基于压电致动的主动悬架具有惯性稳定的发条盒。虽然此应用所需的频率较低（〜10Hz），但位移（+-200至400微米）和作用力（22-45 N）适中。在INSTAR演示平台上开发，建模，制造和实验验证了两种截然不同的致动方法：1）一种基于Recurve架构的d_（31）方法，重点是产生比d_（31）致动器常见的力更大的力； 2 ）d_（33）方法基于采用拓扑优化设计的顺应性机制，重点是提供比d_（33）促动器常见的放大应变。两种方法都可以成功满足INSTAR的要求，但是每种方法都有其优点和缺点。

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