Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Hierarchical control has been applied in many industries, including steel mills, oil refineries, chemical plants, glass works, and automated manufacturing. Most applications have been limited to two or three levels of hierarchy, however. The lower levels usually consist of tight servo loops, with bandwidths on the order of 1 kHz. The upper levels typically control production planning and scheduling events measured in units of days or weeks.
A five-level hierarchy for a flexible manufacturing facility is as follows: The lowest level (level 1) handles servo control of robotic manipulator joints and machine tool degrees of freedom. The second level performs activities such as coordinate transformation in machine tools, which are required in generating control commands for various servo loops. The third level converts task commands into motion trajectories (of manipulator end effector, machine tool bit, etc.) expressed in world coordinates. The fourth level converts complex and general task commands into simple task commands. The top level (level 5) performs supervisory control tasks for various machine tools and material-handling devices, including coordination, scheduling, and definition of basic moves. Suppose that this facility is used as a flexible manufacturing workcell for turbine blade production. Estimate the event duration at the lowest level and the control bandwidth (in hertz) at the highest level for this type of application.
Air modeled as an ideal gas enters at 320k, 900kpa, with a velocity of 30 m/s and exits at 305k. Assuming steady state and neglecting stray heat transfer, determine for air exiting the pipe a) the velocity and b) the pressure.
Is there anything you would change about your undergraduate experience. You use a primary care doctor you trust with your healthcare concerns, right. This is especially profitable in case you have a continued require for the purchase of a package of ..
a closed system undergoes a reversible process from 220 k to 440 k with the heat transferred per degree of temperature
write a matlab code to draw a cubic bezier curve using decasteljau algorithm. the input to the program should be four
an electric wire made of c14500 copper is stretched between two street supports at 20degc so that a stress of 40 mpa is
The company sets the quality specification to 2 ±0.25 inches per second because an average customer is likely to complain and return the tape if the speed is off by more than 0.25 inch per second. The cost per return is $36. The repair cost before th..
A vapor compression refrigeration cycle has a theoretical COP of 4.8 and provides 120,000 btu/h of cooling (same as 10 tons of cooling). The compressor is driven by a motor with an efficiency of 92%. Estimate the theoretical kW electrical demand that..
In a four bar mechanism ABCD, AD is fixed and is 150 mm long. The crank AB is 40 mm long and rotates at 120 rpm clockwise, while the link CD = 80 mm oscillates about D. Link BC and AD are of equal length. Using the analytical/mathematical solution me..
What thickness of concrete (density 2200 kg m-3) is needed to attenuate a collimated beam of 1-MeV γ rays by a factor of 106? The mass attenuation coefficient of concrete μm = 0-064cm2g-1.
Explain which agencies would be involved in the consultation exercises for this project and at what stage(s) they would be involved - ?Discuss the type of prediction methods that could be used for this parameter
a 4 kw motor is driving an oil pump with an efficiency of 95 down a 10 mm diameter pipe. if the velocities of the fluid
a cylindrical metal specimen having an original diameter of 11.05 mm and gauge length of 51.7 mm is pulled in tension
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd