ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Fast Steering MirrorsOutlineReference listTo explore further (survival pointers of web references etc)Major applicationsBasic Working PrincipleControlling a Fast Steering MirrorControlling a Fast Steering Mirror Block DiagramExample Control System ModelExample MirrorsSlide 11Sample Configuration – Beam StabilizationMajor SpecificationsTypical Mirror Substrates and Standard CoatingsFast Steering Mirror Technical DrawingTypical Bode PlotMirror X and Y ResponseLimitationsCostManufacturersECE5320 MechatronicsAssignment#01: Literature Survey on Sensors and Actuators Assignment#01: Literature Survey on Sensors and Actuators Topic: Fast Steering MirrorsPrepared by: Brad LeishmanDept. of Electrical and Computer Engineering Utah State UniversityE:[email protected]; T: (435)797-0464; F: (435)797-3054 (ECE Dept.)3/10/200601/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-2Outline –Reference list–Major applications –Basic Working Principle•Controlling a Fast Steering Mirror•Controlling a Fast Steering Mirror Block Diagram•Example Control System Model–Example Mirrors–Sample Configuration – Beam Stabilization–Major Specifications•Typical Mirror Substrates and Standard Coatings–Fast Steering Mirror Technical Drawing–Typical Bode Plot–Mirror X and Y Response–Limitations–Cost–Manufacturers01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-3Reference list•“Fast-steering mirrors improve active beam stabilization” Jeff Hecht, Optoelectronics World 2001•“Adaptive Optics Engineering Handbook” Robert K. Tyson, Marcel Dekker 2000•“Advanced Space System Concepts and Technologies” Ivan Bekey, The Aerospace Press 2003•“Adaptive Optics for Industry and Medicine” Gordon D. Love, World Scientific 200001/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-4To explore further (survival pointers of web references etc) •www.ballaerospace.com•www.baesystems.com•www.axsys.com•www.newport.com•www.physikinstrumente.de01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-5Major applications •Image Stabilization•Laser Communication•Jitter Motion Compensation•Military Targeting Systems•Optical Instrumentation•High-Energy Laser Pointing,•Astronomy Laser Light Shows•Laboratory experimentation•Industrial Applications01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-6Basic Working PrincipleThe fast steering mirror has been developed in several different sizes and configurations for many various applications.It features a circular or elliptical mirror mounted on a two-axis flex pivot. Two pairs of voice coil actuators steer the mirror and two matched pairs of differential position sensors measure its angle. The mirror is under closed loop servo control from a two-channel digital controller contained on the associated PCB. The PCB accepts analogue or digital mirror position commands and returns analogue and digital mirror position measurements.01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-7Controlling a Fast Steering Mirrorwww.ballaerospace.com01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-8Controlling a Fast Steering Mirror Block Diagramhttp://www.opticsinmotion.net/FSM%20Description.htm01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-9Example Control System Modelhttp://www.axsys.com/pdfdownloads/spieFSMpaper.pdf01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-10Example Mirrorswww.ballaerospace.comhttp://www.opticsinmotion.net/prod03.htm01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-11Example Mirrorswww.ballaerospace.com01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-12Sample Configuration – Beam Stabilizationwww.newport.com/Support/Magazine_Features/pdf/10390-578.pdf01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-13Major Specifications•Diameter (25 mm – 60 cm)•Bandwidth (up to 1000Hz)•Operating Temp (0 – 40°C)•Size and Weight•Peak Power (10 – 17W)•Angular Range (1 – 25mrad)•Angular Acceleration (100 – 2000rad/sec^2)•Position Resolution (<5urad)01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-14Typical Mirror Substrates and Standard Coatings•Aluminum/Beryllium SiO overcoat, reflectivity >90% from 400 to 650 nm, λ/4 rms•Glass >90%, 400 to 650 nmFor Applications of Enhanced Reflectance and IR•Aluminum/Beryllium Gold with protectiveovercoat, reflectively>97% above 800 mm01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-15Fast Steering Mirror Technical Drawinghttp://www.axsys.com/pdfdownloads/spieFSMpaper.pdf01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-16Typical Bode Plothttp://www.opticsinmotion.net/FSM%20Description.htm01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-17Mirror X and Y Responsehttp://www.axsys.com/pdfdownloads/spieFSMpaper.pdf01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-18Limitations•They are extremely expensive.•Depending of the product specifications, only can obtain a limited number of angle rotations.•Only useful in a small number of applications because of cost and complexity.•They are difficult to control requiring a lot of interfacing and complex algorithms.01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-19Cost•Since these are mostly used for defense or other high end research projects they are usually pretty expensive.•They often need to be specially built according to the project specifications and dimensions. •Typically $1000 - $10,00001/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-20Manufacturers•Ball Aerospace•Newport•BAE Systems•Axsys
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