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O que (quem) é PID controller - definição
PID controller
![A [[block diagram]] of a PID controller in a feedback loop. ''r''(''t'') is the desired process value or setpoint (SP), and ''y''(''t'') is the measured process value (PV).](https://commons.wikimedia.org/wiki/Special:FilePath/PID en.svg?width=200 "A [[block diagram]] of a PID controller in a feedback loop. ''r''(''t'') is the desired process value or setpoint (SP), and ''y''(''t'') is the measured process value (PV).")
![Early PID theory was developed by observing the actions of [[helmsmen]] in keeping a vessel on course in the face of varying influences such as wind and sea state.](https://commons.wikimedia.org/wiki/Special:FilePath/Scross helmsman.jpg?width=200 "Early PID theory was developed by observing the actions of [[helmsmen]] in keeping a vessel on course in the face of varying influences such as wind and sea state.")
CONTROL LOOP MECHANISM USED IN CONTROL ENGINEERING
PID loop; Proportional-Integral-Derivative controller; PID tuning; PID algorithm; Proportional integral derivative; PI controller; PD controller; PID control; PI Controller; Pi controller; Pidc; PID Controller; Proportional–integral–derivative controller; P.I.D. control; Droop (control); Proportional-integral-derivative controller; PID feed back controller; PID feedback controller; Three term controller; Steady-state error
A proportional–integral–derivative controller (PID controller or three-term controller) is a control loop mechanism employing feedback that is widely used in industrial control systems and a variety of other applications requiring continuously modulated control. A PID controller continuously calculates an error value e(t) as the difference between a desired setpoint (SP) and a measured process variable (PV) and applies a correction based on proportional, integral, and derivative terms (denoted P, I, and D respectively), hence the name.
disk controller
CONTROLLER FOR DISK STORAGE, USUALLY INTEGRATED INTO THE DRIVE
Hard disk controller; Hard drive controller; HD controller; Drive controller
<hardware, storage> (Or "hard disk controller", HDC) The
circuit which allows the CPU to communicate with a {hard
disk}, floppy disk or other kind of disk drive.
The most common disk controllers in use are IDE and SCSI
controllers. Most home personal computers use IDE
controllers. High end PCs, workstations and network {file
servers} mostly have SCSI adaptors.
(1998-03-16)
Disk controller
CONTROLLER FOR DISK STORAGE, USUALLY INTEGRATED INTO THE DRIVE
Hard disk controller; Hard drive controller; HD controller; Drive controller
The disk controller is the controller circuit which enables the CPU to communicate with a hard disk, floppy disk or other kind of disk drive. It also provides an interface between the disk drive and the bus connecting it to the rest of the system.
