A novel class of MEMS accelerometers for guidance and control of gun-fired munitions

Jahangir Rastegar; Dake Feng; Carlos M. Pereira

doi:10.1117/12.2176876

22 May 2015 A novel class of MEMS accelerometers for guidance and control of gun-fired munitions

Jahangir Rastegar, Dake Feng, Carlos M. Pereira

Proceedings Volume 9467, Micro- and Nanotechnology Sensors, Systems, and Applications VII; 94672Y (2015) https://doi.org/10.1117/12.2176876
Event: SPIE Defense + Security, 2015, Baltimore, MD, United States

Abstract

The state of art in shock resistant MEMS accelerometer design is to reduce the size of the proof-mass, thereby reducing the generated forces and moments due to shock loading. Physical stops are also provided to limit proof-mass motion to prevent damage to various moving components. The reduction of the proof-mass size reduces the sensor sensitivity. In addition, to increase the sensor dynamic response, proof-mass motion needs to be minimally damped, resulting in a significant sensor settling time after experiencing a high shock loading such as those experienced by gun-fired munitions during firing. The settling time is particularly important for accelerometers that are used in gun-fired munitions and mortars for navigation and guidance. This paper describes the development of a novel class of accelerometers that are provided with the means of locking the sensor proof-mass in its “null” position when subjected to acceleration levels above prescribed thresholds, thereby protecting the moving parts of the accelerometer. In munitions applications, the proof-mass is thereby locked in its null position during the firing and released during the flight to begin to measure flight acceleration with minimal settling time. Details of the design and operation of the developed sensors and results of their prototyping and testing are presented. The application of the developed technology to other types of inertial sensors and devices is discussed.

Citation Download Citation

Jahangir Rastegar, Dake Feng, and Carlos M. Pereira "A novel class of MEMS accelerometers for guidance and control of gun-fired munitions", Proc. SPIE 9467, Micro- and Nanotechnology Sensors, Systems, and Applications VII, 94672Y (22 May 2015); https://doi.org/10.1117/12.2176876

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Sensors

Microelectromechanical systems

Gyroscopes

Capacitors

Prototyping

Actuators

Electronics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years