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A brand of autofocusing camera uses a microprocessor-based feedback control system consisting of a CCD imaging system, a microprocessor, a drive motor, and an optical encoder. The purpose of the control system is to focus the camera automatically based on the image of the subject as sensed by a matrix of CCDs (a set of metal-oxide-semiconductor field-effect transistors, or MOSFETs). The light rays from the subject that pass through the lens will fall onto the CCD matrix. This will generate a matrix (image frame) of charge signals, which are shifted one at a time, row by row, into an output buffer (or frame grabber) and passed on to the microprocessor after conditioning the resulting video signal. The CCD image obtained by sampling the video signal is analyzed by the microprocessor to determine whether the camera is focused properly. If not, the lens is moved by the motor so as to achieve focusing. Draw a schematic diagram for the autofocusing control system and explain the function of each component in the control system, including the encoder.
air at the inlet of an ideal reversible-aidabatic compressor enters through a 0.036m2 pipe at 115 kpa. the compressor
one end of a tube is closed and the other is open. a 15 g projectile is placed near the closed end is fastened in place
An Ocean Thermal Energy Conversion (OTEC) power plant built in Hawaii in 1987 was designed to operate between the temperature limits of 86°F at the ocean surface and 41°F at a depth of 2100 ft. About 13,300 gpm of cold seawater was to be pumped from ..
1.an in-line six cylinder 6.6 liter four-stroke cycle si engine with multiple port fuel injection operates at 3000 rpm
Determine the minimum thickness of fibreglas insulation that needs to be used in the wall in order to avoid condensation on the outer surfaces.
the inside surfaces of a pottery oven are all at 500oc. a cube of clay 10 cm on each side ? 0.9 initially at 20oc is
In a yogurt-filling line the containers are filled with 1 kg of yogurt. The mass of the yogurt is measured while the filling nozzle is open. The nozzle flow rate is 0.20 Kg/sec. Several factors affect the flow rate, including the density and the visc..
Introduction - outline the major areas of theory in relationship to low-pass filter design in Matlab (up to two pages).
Find the mass flow rate of air into the engine and If the velocity needs to be restricted to 150 [m/s] estimate the diameter of the restriction.
air at 7 kpa and 35 degc flows over a flat plate at 7.5 ms. the plate is 30 cm square and is maintained at 65 degc.a.
a rigid tank whose volume is 0.5 m3 initially containing ammonia at 20oc 1.5 bar is connected by a valve to a large
Write a MATLAB program that can calculate the cross-sectional areas for the rectangle, solid circle, hollow circle, solid semicircle and right triangle shapes. The program should allow the user to enter the dimensions SI and ips units, and give the r..
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