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We want to build a high-precision closed-loop control system for a positioning stage used in a machine tool with small load. You have following options for sensors (LVDT, optical encoder, potentiometer, DC tachometer), and actuators (DC servomotor, stepper motor, hydraulic cylinder, pneumatic cylinder). Please choose the most appropriate sensor and actuator for the system, and briefly explain the reason.
a rocket is held stationary by the horizontal force fx and the vertical force fz during a test run. the velocity and
Assume a diffusion coefficient of 1 × 10-8 m2/s, that the concentrations at the high- and low-pressure sides of the plate are 2.4 and 0.6 kg of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained.
calculate various fuel quantities for flight 143. the plane already had 7682 l of fuel on board prior to the flight and
It is required to design an electromechanical system to achieve a natural frequency of 1000 Hz and a Q factor of 1200. Determine the damping factor and the bandwidth of the system.
A cylindrical wooden storage vat has a 20 ft outside diameter. It is filled with 24 feet of brine with a specific gravity of 1.06. The wooden staves making up the vat are bound by flat steel bands evenly spaced vertically around the tank. Each band i..
A smoke detector is routinely inspected. 80% of the detectors found inoperative had experienced a power surge, and 10% of those found in operating condition had experienced a power surge. 20% of the detectors inspected have failed. What is probabi..
The chord of an airplane's thin wing is 2 m and it is flying at 300 km/h.
A link chain loaded as shown in Figure P19.25 is comprised of two sizes of links that are connected with pins. Assume that the thicker links are twice as thick as a thin link.
a flywheel can be considered as being composed of a thin disc and a rim. the rim weighs 322 lb and has diameters of 24
What is the speed resolution in each case? What effect does step-up gearing have on the speed resolution?
Identify why each section in this chapter fits the sections discussed in class.Discuss each item that you fit under these sections and point out the differences.Write about the limitations (if any) you can think of using the book approach.
Write a computer program to determine the allowable load P for the given values of r, D, the thickness t of the bar, and the allowable stress σall of the material. Knowing that t = 1/4 in., D = 3.0 in. and σall = 16 ksi, determine the allowable lo..
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