Search results
Results From The WOW.Com Content Network
Within modern distributed control systems and programmable logic controllers, it is much easier to prevent integral windup by either limiting the controller output, limiting the integral to produce feasible output, [5] or by using external reset feedback, which is a means of feeding back the selected output to the integral circuit of all ...
Replica of the original 1951 Weber kettle grill. Weber-Stephen was originally incorporated on May 8, 1893, as Weber Bros. Metal Works. [3]In 1951, the original round charcoal kettle grill was built by George Stephen Sr., a then part-owner of the sheet metal shop in Chicago who sought to improve on the brazier he had been using to cook with at home. [4]
A back-pressure regulator, back-pressure valve, pressure sustaining valve or pressure sustaining regulator is a control valve that maintains the set pressure at its inlet side by opening to allow flow when the inlet pressure exceeds the set value.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
One of the main results in the theory is that the solution is provided by the linear–quadratic regulator (LQR), a feedback controller whose equations are given below. LQR controllers possess inherent robustness with guaranteed gain and phase margin , [ 1 ] and they also are part of the solution to the LQG (linear–quadratic–Gaussian) problem .
Some voltage-regulator tubes contained small amounts of radionuclides to produce a more reliable ionization. [1] The Corona VR tube is a high-voltage version that is filled with hydrogen at close to atmospheric pressure, and is designed for voltages ranging from 400 V to 30 kV at tens of microamperes.
Peter David Weber (born August 21, 1962) is an American bowler in the Professional Bowlers Association (PBA), currently exclusive to their age-group PBA50+ tours (PBA50 and PBA60), and a member of the PBA and USBC Halls of Fame. Weber was one of the sport's most active players and became known for his maverick, chirpy and rebellious personality.
The Weber number is the dimensionless parameter that determines the onset of this phenomenon called the entrainment limit (Weber number greater than or equal to 1). In this case the Weber number is defined as the ratio of the momentum in the vapor layer divided by the surface tension force restraining the liquid, where the characteristic length ...