Encode: Improving reaction wheel performance using a capacitive sensing encoder

With the maturization of the cubesat market, the requirements for finer control over satellite attitude drives the development of higher performance Attitude Determination and Control Systems. (ADCS)<br/><br/>The ADCS uses reaction wheels as an actuation method, which in turn use brushless DC (BLDC) motors to rotate a heavy rotor wheel. BLDC...

Modeling of a Twisted and Coiled Polymer Muscle

A new type of polymeric artificial muscle was recently discovered. This muscle is based on twisted and coiled polymer fiber and is actuated thermally. It has interesting properties, such as low costs and high work densities. Based on fabrication methods, two variations can be considered. The autocoiled variation has a larger load capacity and...

Averaging Level Control to Reduce Off-Spec Material in a Continuous Pharmaceutical Pilot Plant

The judicious use of buffering capacity is important in the development of future continuous pharmaceutical manufacturing processes. The potential benefits are investigated of using optimal-averaging level control for tanks that have buffering capacity for a section of a continuous pharmaceutical pilot plant involving two crystallizers, a...

Maximum Likelihood Estimation of Linear Time-Varying Pilot-Vehicle System Parameters

Modeling of indoor thermal conditions for comfort control in buildings

Survey of modern control and observation theory for disturbed, target following aerospace systems. Part one: Basic theory

The document contains a general theory towards the observation and optimal control of disturbed, target following aerospace systems. Disturbed, target following aerospace systems eire defined as aerospace systems that are designed to track a moving target system, while they are subjected to external, time-varying disturbances. The first five...