Kollmorgen 4Ch-Digital-Input Datasheet en
... 4-Channel Digital Inputs, 24 V DC
The 4 channel digital input terminals acquire the binary 24 V control signals and transmit them, in an electrically
isolated form, to the higher-level automation unit. These terminals contain four channels that indicate their signal
state by means of LEDs and have d ...
Unit 13: Periodic Motion
... o Periodic motion is motion that repeats itself in a definite cycle. It occurs whenever a
body has a stable equilibrium position and a restoring force that acts when it is
displaced from equilibrium.
o Period is the time for one cycle. Frequency is the number of cycles per unit time.
Angular frequen ...
Simple Harmonic Motion: a system that oscillates with a constant
... 2. Watch MythBusters. They did two different episodes with oscillators that tried to
shake bridges. One was a suspended bridge with marching feet; the other was a
large metal framed bridge like the one in East Troy. This is their test of the actuator
on a steel beam.
3. A person periodically pushed ...
... 4N force on the spring will cause a displacement of 0.02 meters.
A 2kg block is pulled a distance of 0.04 meters and then released, setting the system in
a. Find the spring constant.
b. Find the period and frequency of oscillation.
c. Calculate the maximum velocity attained.
d. Calculate the ...
Simple harmonic motion (SHM) is that motion in
which a body moves back and forth over a fixed
path, returning to each position and velocity
after a definite interval of time.
The frequency (rev/s) is the
reciprocal of the period (time
for one revolution).
... Reflection and Interference of Waves
When a wave hits a barrier or an obstacle, it is reflected.
Wave in a string is inverted if the end of the string is fixed. If
the end is not fixed, it will be reflected right side up.
... For a vertical spring and mass system . . .
• When the mass is above equilibrium,
the restoring force points down.
• At equilibrium, the net force is zero.
• When the mass is below equilibrium,
the restoring force points up.
... physical phenomena
– If the atoms in the molecule do not move too far, the forces between
them can be modeled as if there were springs between the atoms
– The potential energy acts similar to that of the SHM oscillator
(c) Damped forced vibration – applied force
... Once again, we see that a driving frequency near to the natural frequency
produces rather critical conditions, and if excessive amplitudes are to be
avoided, then driving the system close to its resonant frequency is to be
avoided. This means that either the system should be driven at a different
Potential Energy - McMaster University
... • An oscillator driven by an external periodic force will oscillate
with an amplitude that depends on the driving frequency. The
amplitude is large when the driving frequency is close to the
“natural” frequency of the oscillator.
•For weak damping, the system oscillates, and the amplitude
18.034 Honors Differential Equations
... phases of two constituent waves are lined up so that they reinforce. The minimum amplitude is
|A−B | (=
� 0) and it occurs when the two waves are perfectly out of sync and experience destructive
Beats have applications in tuning musical instruments or radar technology. If a tuning ins ...
Optical heterodyne detection
Optical heterodyne detection is the implementation of heterodyne detection principle using a nonlinear optical process. In heterodyne detection, a signal of interest at some frequency is non-linearly mixed with a reference ""local oscillator"" (LO) that is set at a close-by frequency. The desired outcome is the difference frequency, which carries the information (amplitude, phase, and frequency modulation) of the original higher frequency signal, but is oscillating at a lower more easily processed carrier frequency.Optical heterodyne detection has special temporal and spatial characteristics that pragmatically distinguish it from conventional Radio Frequency(RF) heterodyne detection. Electrical field oscillations in the optical frequency range cannot be directly measured since the relatively high optical frequencies have oscillating fields that are much faster than electronics can respond. Instead, optical photons are detected by energy or equivalently by photon counting, which are proportional to the square of the electric field and thus form a non-linear event. Thus when the LO and the signal beams impinge together on the surface of a photodiode they ""mix"", producing heterodyne beat frequencies directly via the physics of energy absorption. While an old technique, key limiting issues were solved only as recently as 1994 with the invention of synthetic array heterodyne detection.