Intro Flashcards

1
Q

An industrial process that deals with the monitor and adjustment of input parameters to attain the desired output

A

Process control

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2
Q

Value of the desired output

A

Set point

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3
Q

Parameter being manipulated to achieve the desired output

A

Controlled variable

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4
Q

A variable that causes the control variable to maintain the desired output

A

Manipulated variable

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5
Q

Any system input that will cause changes in the controlled variable

A

Disturbance

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6
Q

Ability to maintain the process variable at its desired value in spite of disturbances that might be experience.

A

Disturbance rejection

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7
Q

Ability to move the process variable from one setting to a new desired setting

A

Set point tracking

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8
Q

Checks if there is a need to manipulate the variables.

A

Error

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9
Q

The controller automatically acts to restore the control variable back to the desired value

A

Closed-loop feedback control system

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10
Q

Measurement signal disconnected first from the controller, then the controller output manually adjusted to attain the desired variable

A

Open-loop feedback control system

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11
Q

Type of controller that automatically turns on or off depending on the error values.

A

“On/Off” control

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12
Q

Controller that changes the input value in proportion to the error value. The input maintains its value when error is zero.

A

Proportional control

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13
Q

type of control system wherein the information about the state of the system were “fed back” to a controller, prompting changes if certain error value is achieved.

A

Feedback control

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14
Q

How do control system check if there is a need to manipulate the variables?

A

By measuring error

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15
Q

What is the value of error?

A

𝐸𝑟𝑟𝑜𝑟 = (𝑆𝑒𝑡 𝑝𝑜𝑖𝑛𝑡 𝑣𝑎𝑙𝑢𝑒) − (𝑀𝑒𝑎𝑠𝑢𝑟𝑒𝑚𝑒𝑛𝑡 𝑠𝑖𝑔𝑛𝑎𝑙 𝑜𝑓 𝑡h𝑒 𝑐𝑜𝑛𝑡𝑟𝑜𝑙𝑙𝑒𝑑 𝑣𝑎𝑟𝑖𝑎𝑏𝑙𝑒)

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16
Q

Numerical method for solving the system of differential equations (data points were presented instead of particular solution)

A

Runge-Kutta

17
Q

Derived from Euler method at 4th order (increasing the order will make the data points more accurate, as long as the h value is very small).

A

Runge-Kutta

18
Q

a mathematic equation that can predict the dependent variable at any values of the independent variable.

A

function

19
Q

If a function has two possible outcomes, with each outcomes has different set of conditions, the function is said to be

A

piecewise function

20
Q

states that if 𝐹(𝑠) is the Laplace transform of 𝑓(𝑡) ,then
lim [𝑓𝑡] t→ infinity =lim [𝑠𝐹𝑠] s→0
provided that 𝑠𝐹 𝑠 does not become infinite for any value of s.

A

Final Value Theorem

21
Q

states that if 𝐹 𝑠 is the Laplace transform of 𝑓 𝑡 , then
lim𝑓𝑡 =lim𝑠𝐹𝑠 !→% $→#

A

Initial Value Theorem