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Displacement analysis software
LV-0930

Laser length measurement
Laser interferometer
Laser Doppler Vibrometer

LV-0930 is digital analysis software for various amplitudes, including displacement. Using the LV-0930 displacement analysis software, you can analyze the dynamic behavior of a measurement target from movement to stopping with a maximum sampling rate of 1 MHz.
In addition to measuring the object's displacement (m), velocity (m/s), and acceleration (m/s²), it can also measure overshoot and undershoot, and by using two sensors, it can differentially analyze pitching and yawing. Furthermore, it can easily display ±% graphs that show what percentage of the target velocity the constant velocity control is within.

Features

  • Supports sampling rates up to 5 m/s and 1 MHz.

  • Simultaneous conversion of [displacement → velocity → acceleration] is also easy.

Dynamic characteristic analysis

By visualizing the displacement (m) of the measured object, along with the corresponding changes in velocity (m/s) and acceleration (m/s²), it is possible to analyze the dynamic characteristics of the measured object.
It is also possible to plot three waveforms simultaneously and output the data in CSV format.

  • Displacement (m)
    Displacement (m)
  • Acceleration (m/s²) - Displacement → Acceleration conversion
    Acceleration (m/s²) - Displacement → Acceleration conversion
  • Velocity (m/s): Displacement → Velocity Conversion
    Velocity (m/s): Displacement → Velocity Conversion
  • Displacement & Acceleration Graph
    Displacement & Acceleration Graph

Frequency analysis

Frequency analysis
Frequency analysis

It is possible to perform frequency analysis of the displacement fluctuation components superimposed on the displacement of the measured object.

±% graph

When evaluating equipment that requires constant-speed movement accuracy, such as scanners, printer heads, and liquid dispensing devices/dispensers, a ±% graph can be used to easily check what percentage of the commanded control speed the object being measured is within.

  • ±% graph

Pitching & Yaw, Differential Measurement

By using two or more sensors, it is possible to evaluate vertical rotation (pitching) and horizontal rotation (yawing) based on the direction of movement of the object being measured.
In mounting machines and similar devices, the vibration and convergence time of the mounter head and nozzle during high-speed movement can be measured using differential measurements.

  • Pitching & Yaw, Differential Measurement

Positioning accuracy test

By operating the object to be measured in both positive and negative directions at equal intervals and for a set number of cycles, the deviation from the target position can be automatically calculated.
The actual stopping position relative to the set control target value is plotted in real time on a time-displacement graph, and a position-deviation graph is displayed. The mean deviation and standard deviation are calculated for each control target position by direction. These can be output as graphs or CSV files.

  • Example of evaluation operation (5 points, 5 round trip configuration)
    Example of evaluation operation (5 points, 5 round trip configuration)
  • Movement-Time Data (5 points, 5 round trips)
    Movement-Time Data (5 points, 5 round trips)
  • Average deviation graph based on distance traveled
    Average deviation graph based on distance traveled
  • Output of measurement data to CSV
    Output of measurement data to CSV

Specification

Environment settings input Temperature (°C) / Humidity (%) / Atmospheric pressure (hPa) / Laser wavelength (nm) / Thermal expansion correction factor (ppm/°C) / Target object temperature (°C) / Number of channels used / Polarity setting
Monitor function Monitorable Channels Ch1, Ch2, Ch3, Ch4: Displays the displacement values of the connected sensors.
Measurement indicator White: Measurement paused / Green: Measurement and monitoring in progress
Laser reception error
Indicator		 White: Normal light reception level / Red: No reception, light blocked
Y-axis scale (m) ±10 m, ±5 m, ±20 mm, ±1 mm, ±100 μm, ±10 μm
X-axis scale (s) Determined by the number of sampling points and sampling frequency.
Cursor function Display the displacement value for the time selected with the scroll bar.
Displacement value SI prefix switching mm, μm, nm
Sample score display 1 to 65535 (set value)
Display of consecutive cumulative counts 1 to 10 (set value)
Time measurement
Analysis function		 Number of samples Sample size: 1 to 65535
Consecutive times 1～10
Sampling Frequency 1 MHz, 500 kHz, 200 kHz, 100 kHz, 50 kHz, 20 kHz, 10 kHz, 5 kHz, 2 kHz, 1 kHz, 500 Hz, 200 Hz, 100 Hz, 50 Hz, 20 Hz, 10 Hz, 5 Hz, 2 Hz, 1 Hz, 0.5 Hz
Recording time
*Sampling count: 65,535 points		 65.5 m sec (1 MHz sampling)
~36 hours 24 minutes 30 seconds (0.5 Hz sampling)
Trigger function
kinds OFF /Ch1 / EXT (External Input)
direction ↑ (Rise), ↓ (Fall)
position 0%, 25%, 50%, 75%
Trigger position 0 to ±10 (nm, μm, mm, m)
Positioning accuracy
Analysis function		 setting Pitch interval (mm) / Number of repetitions in positive direction, number of repetitions in negative direction / Number of cycles
Control tolerance (mm) / Stop speed setting (mm/s) / End value
Sampling time 62.5 ms *Displacement value measurement sampling time fixed at 62.5 ms
Positioning accuracy
Statistical analysis function		 The average deviation of each position for each repetition count.
The average deviation of each position for the number of times the return trip was repeated.
The average deviation of each position for each number of round trips.
Standard deviation of the average deviation of each position for the number of repetitions.
Standard deviation of the average deviation of each position for the number of times the return trip was repeated.
Standard deviation of the average deviation of each position for the number of round trips.
Deviation of each position in the outward and return directions for each number of repetitions.
Positioning accuracy
Statistical analysis graph
Print function		 Unidirectional positioning deviation and repeatability (forward).
Unidirectional positioning deviation and repeatability (return trip)
Bidirectional positioning deviation and repeatability (forward and backward)
Test conditions, recording and editing Test date/time/test location/model name/machine number/measurement axis/temperature (°C)/atmospheric pressure (hPa)/humidity (%)/object temperature (#1) (°C)/object temperature (#2) (°C)/coefficient of linear expansion (ppm)/positioning measurement setting value
Analysis function amplitude Time-displacement (m)
Time-velocity (m/s)
Time-acceleration (m/s 2)
Fluctuation graph plotting
Upper and lower limits (%) 0.001, 0.01, 0.1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 500
Central value Numerical input: m / m/sm/s 2
Multiple channel analysis Pitching & Yaw / Straightness / Angle / Difference *When using two or more sensors.
moving average 1 to 100 (times)
Frequency analysis
Frame Length 128, 256, 512, 1024, 2048, 4096, 8192, 16384
Window Function Rectangular / Hanning / FlatTop / Exponetial
over-
wrap(%)		 0、25、50、75
Offset correction Offset correction for 2 to 10 waveforms
Digital Filter
filter
Tap length		 32, 64, 128, 256, 512, 1024, 2048
LPF (Sampling frequency/2.56) Hz to 0 Hz
HPF 0 Hz to (sampling frequency/2.56) Hz
Search cursor function Main search cursor, sub-search cursor: Amplitude / Time / Time Delta / Amplitude Delta
Data output Numeric output Binary / CSV
Image Output Bitmap
OS/CPU OS Microsoft® Windows® 10 64-bit version only, 11
For detailed version information, please refer to the Software Environment [Windows] section.​
CPU ​Intel® Core™ i3 2 GHz or higher
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最終更新日:2022/02/01