-
The Feedback Inc 33-033 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 33-033 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 tacho-generator
-
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 manual-speed control using the
Input potentiometer on the mechanical unit
-
The video demonstrated motor automatic-speed 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 2nd-order 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 2nd-order 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 data-storage capacity.
true
-
Ref video: smaller platter-head separation results in _____ data-storage capacity.
greater
-
Ref video: the platter-head 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)
voice-coil 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 right-hand 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 common-mode DC component
-
An instrumentation amplifier has
plifies a small signal while rejecting a common-mode DC component
-
An instrumentation amplifier has
differential input and a single-ended output with respect to ground
-
See Fig 4.1. The ground point on the op-amp is not shown,
because there is no ground point on an op-amp
-
The op-amp 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 op-amp is
rarely used without feedback
-
The ability of an op-amp to eliminate unwanted coupling between adjacent op-amps
channel separation
-
See Fig 4.1. The no-load supply current (I_s) is
typically a few mA
-
See Fig 4.1. The op-amp output (for which current can go in or out)
can be shorted indefinitely
-
See Fig 4.1. The short-circuit 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 op-amp output current (I.out) originates from
+Vs and -Vs
-
See Fig 4.1. Vout = ( (Vin+) - (Vin-) ) * A where A is the op-amp 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 op-amp is operating in the linear range
-
Many op-amps today cost less than $1
and are a major building block in industrial circuits
-
The first solid-state op-amp was designed by Bob Widlar at Fairchild Semiconductor and sold in 1963 for about
$300
-
The op-amp 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 A-11
true
-
The voltage follower is subfig ___
A-32
-
The non-inverting amplifier is subfig ___
A-22
-
The inverting amplifier is subfig ___
A-21
-
The integrator is subfig ___
A-24
-
The differentiator is subfig ___
A-34
-
The summing amplifier is subfig ___
A-13
-
The differential amplifier is subfig ___
A-23
-
The current-to-voltage converter is subfig ___
A-14
-
The voltage-to-current converter is subfig ___
A-33
-
RB in subfig A-31 is calculated as the parallel combination of R1 and RF for the purpose of reducing the output offset voltage
true
-
The first-order low-pass filter is subfig ___
B-11
-
The unity-gain second-order low-pass filter is subfig ___
B-12
-
The non-unity-gain second-order low-pass filter is subfig ___
B-31
-
fourth-order low-pass filter is subfig ___
B-21
-
The first-order high-pass filter is subfig ___
B-32
-
e second-order high-pass filter is subfig ___
B-13
-
e band-pass filter is subfig ___
B-33
-
The band-stop filter is subfig ___
B-22
-
The monolithic (2 or 3 matched opamps in a single package) usually provide specifications that more-closely match actual preformance in subfig ___
BOTH OF THESE
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