Theses and Dissertations at Montana State University (MSU)
Permanent URI for this communityhttps://scholarworks.montana.edu/handle/1/732
Browse
8 results
Search Results
Item Opto-mechanical design and analysis for coherent active imaging(Montana State University - Bozeman, College of Engineering, 2022) Neeley, Jaime Branson; Co-chairs, Graduate Committee: Wm. Randall Babbitt and Joseph A. ShawThe objective of this thesis project was to design a monostatic lidar transmit (Tx) and receive (Rx) opto-mechanical apparatus for remote sensing at a variable range of 50 m - 500 m. The scope of this project begins from the fiber output of a pre-designed Frequency-Modulated Continuous Wave (FMCW) lidar system. After design criteria for the lidar module are given, the optical and mechanical design is presented, opto-mechanical tolerancing is presented, and assembly, alignment, and testing procedures are covered as well. This thesis shows that the required design criteria of diffraction-limited optical performance was achieved while accounting for predictable manufacturing and assembly errors modeled using a Monte Carlo tolerance analysis. Furthermore, this thesis shows that the modeled and measured optical performance results were in good agreement and recommendations are given for improvements for the next-generation revision of the lidar Tx/Rx module.Item Development of l6-channel communication multiplexor for Hewlett Packard 2100 series computers(Montana State University - Bozeman, College of Engineering, 1974) Weaver, Richard DavidItem A register-transfer descriptive language and simulator for digital networks(Montana State University - Bozeman, College of Engineering, 1977) Crane, William PlattItem An 8-bit microcomputer system processor, memory and I/O(Montana State University - Bozeman, College of Engineering, 1976) Irvin, Darrell BootsItem A cellular computer to implement the Kalman filter algorithm(Montana State University - Bozeman, College of Engineering, 1969) Cannon, Lynn ElliotItem Large-stroke deformable MEMS mirror for focus control(Montana State University - Bozeman, College of Engineering, 2013) Moghimi, Seyyed Mohammad Javad; Chairperson, Graduate Committee: David L. DickensheetsWe developed a novel large-stroke deformable mirror for focus control and spherical aberration correction. The mirrors fabricated using MEMS technology provide full range (150-200 microns in tissue) of focus scanning at high numerical aperture (N.A.=0.5-0.7) for confocal microscopy and optical coherence tomography (OCT). In addition to large stroke, low power consumption and high speed operation are other key factors of the developed devices. The impact of this project is broad since the miniaturized deformable mirrors have a wide range of applications. In addition to focus scanning in microscopes they can also be used in small form factor systems such as cell phone cameras and robot vision. Furthermore, laser based microscopes equipped with the focus control mirror may be useful for skin cancer diagnosis and treatment. This thesis consists of seven chapters. The first chapter introduces optical focus control and focus control elements. The second chapter describes different schemes for optical focus control in imaging systems including transmissive variable lenses. The principle of operation, fabrication, and characterization of electrostatic deformable mirrors are reviewed in Chapter 3. High-speed focus control mirrors with controlled air damping are discussed in Chapter 4. In this chapter a model adopted from the analysis of MEMS microphone is used to design the backplate of a MEMS deformable mirror. Moreover, electrostatic-pneumatic MEMS deformable mirrors are introduced in Chapter 5. Analytical model is developed for electrostatic-pneumatic actuation in order to design a MEMS mirror with two membranes. Applications of MEMS deformable mirrors are demonstrated in optical systems in Chapter 6. Finally, a summary and future work are discussed in Chapter 7. The fabrication process details are given in Appendix A.Item Distributed amplifier circuit design using a commercial CMOS process technology(Montana State University - Bozeman, College of Engineering, 2006) Ross, Kyle Gene; Chairperson, Graduate Committee: James P. BeckerThe demand for ever increasing amounts and rates of data transmission is one of the most significant driving forces in the design of modern telecommunications systems. In response, integrated circuit (IC) designers are forced to achieve higher and higher bit rates. Increased bit rates in turn impel the IC communication systems to achieve ever larger bandwidths while maintaining stringent requirements on other design specifications such as cost, die-size and power consumption. One alternative approach to high-bandwidth design showing promise is the design of distributed integrated circuits. Distributed integrated circuit creation applies design methods that have been investigated for nearly seventy years to the rapidly evolving semiconductor process technologies of the modern IC landscape.Item Wireless sensor interrogator design for passive, resonant frequency sensors using frequency modulation spectroscopy(Montana State University - Bozeman, College of Engineering, 2009) Peterson, Brian James; Chairperson, Graduate Committee: Todd KaiserThe lack of passive, wireless, chemical and biological sensor systems is a significant impediment to sensor system applications. While active sensors with a wireless communications link continue to decrease in power consumption, they still require a power source, such as a battery. This active power consumption limits the useful life of the sensor and its applications. A more attractive solution would be a passive, wireless, chemical and biological sensor integrated with a wireless interrogation platform to monitor the sensor. The focus of this thesis is the realization of a wireless sensor interrogator capable of monitoring multiple, passive, resonant-frequency sensors. It is demonstrated, using Frequency Modulation Spectroscopy techniques, that the resonant frequency of a passive sensor can be detected and tracked over time. Simulated results are presented that verify the functionality of the proposed wireless sensor interrogator. In addition, an experimental hardware setup and subsequent experimental results are presented that verify the simulation results. Considerations for the design of the wireless sensor interrogator and opportunities for future research are discussed.