Optimal Tomography--Laser Density Meter

Experiences with a Density Meter

The use of this instrument, utilising galvanic action to indicate the density of massecuite as a guide to crystallization in sugar-boiling vacuum pans and its construction from cheap and readily available materials are enlarged upon. Difficulties experienced in the instrument's successful operation are enumerated and the means of overcoming these are set forth as a guide to present and future o...

Optimal Laser Heating of Plasmas with Constant Density

The laser heating of a plasma with constant density is analyzed using optimal control theory. Heating strategies that minimize the total energy spent, the heating time, or a linear combination of the two, for several values of weighting coelficients, are obtained by determining the optimal laser intensity associated with each point of the phase plane. A numerical example is used to illustrate t...

Optimal Control for Hydraulic System with Separate Meter-in and Separate Meter-out

Individual meter-in and meter-out proportional control of hydraulic cylinders allow more flexible strategies how to handle a payload while optimising certain aspects of the motion. An optimal control approach based on the Hamiltonian is used to plan a motion path for a separate meter-in and separate meter-out system. One goal is to avoid oscillations at the end of the motion in the sense of act...

Signal processing for a laser-Doppler blood perfusion meter

A sensitive and high dynamic range cw laser power meter.

We report the design of a cost effective, highly sensitive cw laser power meter with a large dynamic range based on a photodiode. The power meter consists of a photodiode, a current to voltage converter circuit, an offset balancing circuit, a microcontroller, an analog to digital converter, reed relays, and an alphanumeric liquid crystal display. The power meter can record absolute laser power ...