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lacythecoolest
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The Feedback Inc 33033 unit is a ______ system
servomotor

The mechanical unit is connected to the control panel
through the ribbon cable

The control panel is connected to the computer through
the USB cable

The 33033 system is powered by +15VDC, 15VDC, 5VDC, and ground
true

The DC servomotor is about _____ inches in diameter:
two

The output shaft is
connected to the motor shaft through pulleys and belts

The position sensor on the output shaft is
32:1

A digital display shows the ______ shaft speed in ______.
output, rpm

The speed sensor on the motor shaft is
tachometer or tachogenerator

The position sensor on the motor shaft is
incremental encoder

The input voltage range to the power amplifier to the motor is approximately plus and minus
1VDC

The "zero offset" potentiometer on the power amplifier to the motor is used to set the initial speed to 0
0

The "Input Potentiometer" range is about +1VDC and is located on the
mechanical unit

The "variable dc" input potentiometer range is about +1VDC and is located on the
control panel

Sine, square, and triangle input signals to the servomotor power amplifier are possible through
the control panel.

The video demonstrated motor manualspeed control using the
Input potentiometer on the mechanical unit

The video demonstrated motor automaticspeed control using the
sine wave input

Steady state error is the difference between the steady state output and the input.
true

Zeta and wn can be determined directly from the transfer function poles.
true

An overdamped system has zeta
greater than one

A critically damped system has zeta
equal to one

A critically damped or overdamped system's step response will have overshoot.
false

An underdamped system's step response will have overshoot.
true

An underdamped system has zeta between zero and ____.
1

s^2 + 2*zeta*wn*s + wn^2 is a useful form for the denominator of a 2ndorder transfer function. wn (radians/second) is
undamped natural frequency

s^2 + 2*zeta*wn*s + wn^2 is a useful form for the denominator of a 2ndorder transfer function. zeta is
damping ratio

Which one of these MATLAB functions multiplies two polynomials?
conv()

Which one of these MATLAB functions makes a table of step response parameters?
ltiview()

Four MATLAB functions were used in the video: tf(), stepinfo(), ltiview(), and conv().
true

The response at the first peak minus the steady state value divided by the steady state value and converted to percent is defined as
percent overshoot

WebCHARLIE uses the variable PO for percent overshoot. Does the video use the variable %Mp for percent overshoot?
yes

The time to the _____ peak is identified as peak time (tp).
first

The text uses +2% for settle time, but the video used +___%.
1

Settle time of a step response is the time to go from zero to 99% of the steady state value.
false, because 99% and 101% must be included

Rise time of a step response is the time to go from ___% to ___% of the total response.
10, 90

The video does not mention the closed loop controller that positions the head, but the last homework exercise does.
true

Ref video: signal processing permits even greater datastorage capacity.
true

Ref video: smaller platterhead separation results in _____ datastorage capacity.
greater

Ref video: the platterhead separation is about _____nm and the wavelength of light is between 400 and 700 nm.
10

Ref video: the speed of the platter relative to the floating head is ____ mph.
80

Ref video: no electrical pulse in the head corresponds to
0

Ref video: a negative electrical pulse in the head corresponds to a
1

Ref video: a positive electrical pulse in the head corresponds to a
1

Ref video: the linear motor moves due to the ______ force.
Lorentz

14. Ref video: a spinning disk that contains the magnetized bits is the
platter

Ref video: ones and zeros are written (or read) by the
head

Ref video: physical motion of the head is caused by a(n)
voicecoil actuator

This course considers systems with one input and one output. Therefore R=0 so that the system response (C) to disturbance (D) can be evaluated.
true

In H461220, Figure 220 has ___ input signal(s).
2

In H461220, the sensor in Fig. 220 is
H

In H461220, the sensor in Fig. 220 is
1/(s+1)

In H461220, the controller in Fig. 220 is
K

In H461220, the error signal in Fig. 220 is
E(s)

In H461220, the output signal in Fig. 220 is
C(s)

H461220, the input signal in Fig. 220 is
R(s)

In H461220, the disturbance signal in Fig. 220 is
D(s)

In H461220, distubance in a closed loop feedback system is
undesirable and not avoidable usually

In H461220, the focus of this video is on disturbance
rejection

The partial derivative of z(x,y) with respect to y, means that ___ is held constant.
x

The partial derivative of z(x,y) with respect to x, means that ___ is held constant.
y

z(x,y) = f(x,y). A common notion of partial derivative of f with respect to y is
fy

z(x,y) = f(x,y). A common notion of partial derivative of f with respect to x is
fx

The number of lines that define a plane is
two

The number of tangent lines to any point on a surface is
infinite

The number of tangent planes to any point on a surface is
one

Partial derivative of z(x,y) with respect to y is the same a regular derivative except ___ is considered constant.
x

Partial derivative of z(x,y) with respect to x is the same a regular derivative except ___ is considered constant.
y

Partial derivatives are meaningful in 3D surfaces.
true

The derivative of z(x,y) at constant x is the ____ derivative of z with respect to ____.
partial, y

The derivative of z(x,y) at constant y is the ____ derivative of z with respect to ____.
partial, x

When one takes a derivative of a 3D surface, the direction of the derivative
must also be specified

The number of slopes for any point on a 3D surface is
infinite

A function that produces a 3D surface is z(x,y), which means that z is a function of
x and y

In a righthand coordinate system,
ixj=k

Ground loops can be caused by grounding
both ends of a cable

Ground loops are
undesirable and avoidable

A primary purpose of the instrumentation amplifier is
amplifies a small signal while rejecting a commonmode DC component

An instrumentation amplifier has
plifies a small signal while rejecting a commonmode DC component

An instrumentation amplifier has
differential input and a singleended output with respect to ground

See Fig 4.1. The ground point on the opamp is not shown,
because there is no ground point on an opamp

The opamp is ubiquitous device, meaning that
it is commonly used

most applications with feedback, voltage gain, input impedance, and output impedance depend on
external components

See Fig 4.1. The opamp is
rarely used without feedback

The ability of an opamp to eliminate unwanted coupling between adjacent opamps
channel separation

See Fig 4.1. The noload supply current (I_s) is
typically a few mA

See Fig 4.1. The opamp output (for which current can go in or out)
can be shorted indefinitely

See Fig 4.1. The shortcircuit current (Isc) is typically
10ma to 30mA

See Fig 4.1. Zout is
typically small

See Fig 4.1. The input impedance (Zin+ and Zin) are
typically 100s of Mohms

See Fig 4.1 Vs is
supply voltage

See Fig 4.1. The opamp output current (I.out) originates from
+Vs and Vs

See Fig 4.1. Vout = ( (Vin+)  (Vin) ) * A where A is the opamp gain and is
typically hundreds of thousands, but never known precisely

See Fig 4.1
 Vs is usually about 15v
 Vs < Vout < +Vs
 I.in+ = I.in is approximately zero

See Fig 4.1. When connected to other components and when
n+ = Vin, the opamp is operating in the linear range

Many opamps today cost less than $1
and are a major building block in industrial circuits

The first solidstate opamp was designed by Bob Widlar at Fairchild Semiconductor and sold in 1963 for about
$300

The opamp has
 low output impedance
 high input impedance
 high gain

All of these are active (not passive) because of the plus and minus supply voltages
true

A passive system does not require supply voltages.
true

All of the opamp filters are on Figure 9033____.
B

The basic opamp without any feedback is subfig A11
true

The voltage follower is subfig ___
A32

The noninverting amplifier is subfig ___
A22

The inverting amplifier is subfig ___
A21

The integrator is subfig ___
A24

The differentiator is subfig ___
A34

The summing amplifier is subfig ___
A13

The differential amplifier is subfig ___
A23

The currenttovoltage converter is subfig ___
A14

The voltagetocurrent converter is subfig ___
A33

RB in subfig A31 is calculated as the parallel combination of R1 and RF for the purpose of reducing the output offset voltage
true

The firstorder lowpass filter is subfig ___
B11

The unitygain secondorder lowpass filter is subfig ___
B12

The nonunitygain secondorder lowpass filter is subfig ___
B31

fourthorder lowpass filter is subfig ___
B21

The firstorder highpass filter is subfig ___
B32

e secondorder highpass filter is subfig ___
B13

e bandpass filter is subfig ___
B33

The bandstop filter is subfig ___
B22

The monolithic (2 or 3 matched opamps in a single package) usually provide specifications that moreclosely match actual preformance in subfig ___
BOTH OF THESE

