Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 28 for “"linear motor"”.
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Thermally efficient linear motor analysis & design
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998.
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Design of a two-axis linear motor
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Modeling and simulation of a linear motor system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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The design of a closed loop linear motor system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Testing and experimentation of an X-Y linear motor
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1992.
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Implementation of a Halbach array in a tubular linear motor
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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The Design, Fabrication, and Modeling of a Piezoelectric Linear Motor
The focus of this research was to create a linear motor that could easily be packaged and still perform the same task of the current DC motor linear device. An incremental linear motor design was decided upon, for its flexibility in which the motor can be designed. To replace the current motor it …
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Inductive position/velocity sensor design and servo control of linear motor
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Analysis and design of a linear motor for high speed applications
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Development of an adaptive PID controller for a Sawyer linear motor system
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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Optimum design and machining parameters of a permanent magnet brushless DC linear motor as a CNC feed drive
… applied to a permanent magnet brushless DC linear motor (PMBDCLM) as a CNC feed drive. An FEA model has been developed utilizing an -electromagnetic postprocessor to provide performance output of a PMBDCLM and DC servomotor. Based on the developed FEA models, velocity results have been …
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High speed linear induction motor efficiency optimization
One of the reasons linear motors, a technology nearly a century old, have not been adopted for a large number of linear motion applications is that they have historically had poor efficiencies. This has restricted the progress of linear motor development. The concept of a linear motor as a rotary …
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Digital Tracking Control for Machine Tool Feed Drives
The use of linear motor direct drives as feed drives enables higher feed rates and accelerations, eliminates problems with backlash, and reduces power waste due to friction. Servo controller design of those feed drives becomes more challenging due to dynamic interaction between the servo control …
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Design and control of a long stroke fast tool servo
… thesis, I detail the design and control of a linear long stroke fast tool servo (FTS) with integral balance mass. The long stroke fast tool servo consists of an air bearing stage driven by a unique three phase oil cooled linear motor. The linear FTS has a travel range of 25 mm and is capable …
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Development of a large displacement flexure based nano-precision XY positioning stage for vacuum environments
… stage is made of links and flexure joints, and a linear motor is used as the actuator. This stage is not a dual servo stage, but it can provide large motion range of greater than 8” x 8” to support a substrate during semiconductor manufacturing. An over-constrained mechanism is used to incorporate …
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Design and Fabrication of an Oscillating Tool for Powder Spreading in Metal Additive Manufacturing
… have been performed and show that using a linearly oscillating spreading tool can have favorable results on layer quality. This thesis focuses on the design and implementation of an oscillating spreading tool on a pre-existing testbed. The system dynamics of an object oscillating at an …
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Design, dynamic modeling, simulation and feedback control of hydrostatic bearing
… carriage (Hydrocline) that uses an open face linear motor to drive the carriage as well as to preload the hydrostatic bearings has been developed by Professor Alexander Slocum and Gerald Rothenhöfer of the Massachusetts Institute of Technology's Mechanical Engineering Department. The …
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An optimized Linear Lorentz-force Actuator for biorobotics and needle-free injection
Voice coils are a configuration of Linear Lorentz-force Actuator (LLA) that offer efficient transduction of electrical energy into linear motion. The simple geometry of a typical voice coil motor makes the configuration easily tunable for custom applications. Recent advances in high-energy magnets …
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Nonlinear Deadbeat Current Control of a Switched Reluctance Motor
… to the success of the switched reluctance motor (SRM). Yet high motor phase nonlinearities in the SRM place extra burden on the current controller, rendering it the weakest link in SRM control. In contrast to linear motor control techniques that respond to current error, the deadbeat …
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Rotary-linear axes for high speed machining
… analysis, fabrication, and control of a rotary-linear axis; this axis is a key subsystem for high speed, 5-axis machine tools intended for fabricating centimeter-scale parts. The rotary-linear axis is a cylinder driven independently in rotation and translation. This hybridization minimizes …
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