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ENSC 494 Design of a Micro-Machined Bistable Switch

ENSC 494 Design of a Micro-Machined Bistable Switch. Group MISS: M aria Trinh I an Foulds S am Hu S teve Liao. State 1. State 2. State 1. State 2. Actuation. Introduction. Bistable Switch A mechanical device that provides two stable states with a single actuation. Motivation .

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ENSC 494 Design of a Micro-Machined Bistable Switch

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  1. ENSC 494Design of a Micro-Machined Bistable Switch Group MISS: Maria Trinh Ian Foulds Sam Hu Steve Liao

  2. State 1 State 2 State1 State2 Actuation Introduction • Bistable Switch • A mechanical device that provides two stable states with a single actuation

  3. Motivation • Needed for: • Optical Switching • Micro-Transmission • Current Solution: • Monostable Switches • High Power Consumption • Heat Dissipation

  4. Inspiration • Extension Ladder • Simple • Linear Actuation • Implements well MUMPs in technology

  5. Step Rail Guide Hook Actuator Rod Cantilever Beams Pull Implementation

  6. Animations

  7. Calculations • Beam Bending Dynamics • model: cantilever beam with end load • box spring:

  8. A B C D K F H I G E J M L Design Details

  9. Final Design

  10. Future Research • Shrink design: • develop smaller hub and hook • look into torsional springs • aim for shorter actuation trajectory • eliminate the need for stepper motors • simplify design • lower energy consumption

  11. Questions? • Check out the website: • http://www.sfu.ca/~shua

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