Servo analyzer frequency response measurement software

OS-4100

The OS-4100 frequency response measurement software is the successor to the previous servo analysis software (DS-0242 / DS-0342). It incorporates all the functions of the previous models, plus new convenient features such as external control and step response functionality.

The DS-5000 is smaller than its predecessor, the DS-3000, and features improved dynamic range and noise-resistant hardware with full channel isolation. The dynamic range has been improved from 110 dB to 130 dB, and the maximum number of measurable channels has been increased from 32 to 42.

It features two types of calculation methods, allowing you to choose the one that best suits your measurement scenario and purpose.

When measuring in the low-frequency range, such as for evaluating control characteristics or measuring impedance, the measurement time can be very long.
We have revised the conventional calculation method and significantly reduced the measurement time.

example

Measurement condition 1: FRA method 1 Hz to 1,000 Hz 50 Line/Decade
Measurement condition 2: FRA method 1 Hz to 100 Hz 100 Line/Decade

Frequency response functions can be displayed in a variety of ways, including Bode plots, Nyquist plots, Coqpad plots, Nichols plots, and Cole-Cole plots.
It allows you to monitor the time waveform and instantaneous power spectrum during measurement, enabling you to check connection methods and identify abnormal data in real time.
Additionally, you can change the display position of various windows to your preferred layout using the docking window.

Control characteristics (OS-4100) and noise and vibration measurements (O-Solution) can be measured with a single piece of hardware. By using different software depending on the application, it can be used for various measurements at a low cost.

For example, the image stabilization control characteristics of a camera can be measured with the OS-4100, and the motor noise and other characteristics can be measured with the O-Solution.

It is equipped with convenient features that can be used for a variety of purposes.

You can view a list of peak points, attenuation ratios, loss coefficients, gain margins, and phase margins. You can also automatically search for gain margins and phase margins.

The device includes a function that, after measuring the frequency response function, allows for re-measurement of only a portion of it with increased frequency resolution.
After capturing the overall frequency characteristics, there will be regions where you want to measure with high frequency resolution, such as the resonance point.
This allows for re-measurement of only that specific region with high frequency resolution, which helps to shorten measurement time.

The OS-4100 can import data acquired with older products such as ESUFEEL and DS-0342 (servo analysis), as well as data acquired with O-Solution.
It is possible to compare it with past data or with frequency response functions obtained from hammering tests.

In accordance with JIS K7391, the loss coefficient and Young's modulus of the damping material are calculated from the frequency response function obtained using the frequency response measurement software OS-4100.

An optional feature is the OS-0410 external control. This allows you to communicate with your own software via TCP/IP, perform measurements under pre-defined conditions, and save the data.

An optional feature is the OS-0410 external control. This allows you to communicate with your own software via TCP/IP, perform measurements under pre-defined conditions, and save the data.

You can control the start and end timing of measurements and specify measurement conditions.

The frequency response measurement software is a system that uses DS-5000 series (FFT analyzer) hardware and a PC.
The signal output function of the DS-5000 series (FFT analyzer) is used to input a signal to the target object, and the input signal and output signal (response) are measured to determine the frequency response function.

Motors and drivers incorporated into various products such as robots, transport equipment, semiconductor manufacturing machines, and automobiles have control circuits to control their rotational speed, torque, and other properties. To evaluate these control characteristics, gain margin and phase margin are determined. The OS-4100 can automatically calculate gain margin and phase margin from the frequency response function (open-loop transfer function). It can also measure the closed-loop transfer function and determine the open-loop transfer function (loop transfer function). The DS-0545 2-channel signal output unit can add the feedback signal (signal from the target object) and the measurement signal (signal generated internally by the DS) and return them to the input. This allows the signal to be directly injected into the control circuit, making it easy to evaluate the stability of the control circuit.
Furthermore, the step response function allows for the measurement and automatic calculation of responsiveness in the time domain (such as delay time and overshoot value).

The DS-0545 2-channel signal output unit can output a signal that adds a measurement signal (a signal generated internally by the DS) to the feedback signal from the object.

Therefore, there is no need to prepare an additive amplifier, and the elimination of cables between amplifiers improves noise immunity.

This method allows you to determine the temporal response performance of an object. By applying a step-like step signal (time) to the object and measuring the step response signal, numerical values related to response performance (such as rise time) can be automatically calculated, and it is also possible to compare measured data with historical data.

(In cooperation with Citizen Chiba Precision Co., Ltd.)

A galvanometer scanner (galvanometer mirror) is a motor used to adjust the scanning angle of a mirror that reflects laser light, and it is equipped with a high-precision position sensor. It is used in a wide range of applications in combination with laser light, such as laser markers, microscopes, and LiDAR. Depending on the application, it is required to scan the mirror quickly, accurately, and over a wide area. Therefore, during product development, it is necessary to perform accurate simulations to achieve high speed, and to optimize the model and control parameters.
Furthermore, in order to ensure that our customers can use our products with peace of mind, we need to verify that the product's performance is guaranteed before shipment.
Therefore, the challenge was to accurately and easily measure and understand the control characteristics of the galvanometer scanner and the resonant frequency of the mirror.

Results of comparing three types of control parameters

Comparing three types of galvanic mirrors

For more details, please see the following page.

When a structure is subjected to vibration, resonance occurs if the vibration frequency matches the structure's natural frequency, resulting in very large vibrations that can lead to failure or destruction. Therefore, it is important to evaluate the vibration characteristics of the structure (object). The OS-4100 can simultaneously measure vibration characteristics using a vibrator on up to 42 channels.
Furthermore, the calculus function can convert acceleration to displacement, and the amplitude control function can control the amplitude value of the excitation. In addition, the function to perform arithmetic operations on two data points (inter-item calculation function) can be used to measure the characteristics after subtracting the weight of the jig (mass cancellation).

The amplitude of the vibrator can be controlled. The amplitude of the signal output (DS-5000) can be automatically changed so that the measured amplitude matches a preset amplitude. The vibrator can be controlled so that the amplitude of ch1 remains constant. Vibration characteristics can be measured without being affected by the vibration characteristics of the jig.
Furthermore, it is possible to control the displacement amplitude using an acceleration sensor.

One method for evaluating batteries is the AC impedance method. This method allows for the evaluation of impedance characteristics (such as electrode degradation) without damaging or disassembling the battery. AC impedance can be measured by applying an AC current load to the battery and measuring the voltage and current. Using the FRA method allows for high-precision measurement with a wide dynamic range. It can also display a Cole-Cole plot, which is useful for estimating the causes of battery degradation. The software uses the widely compatible uff and HDF5 file formats to facilitate the transfer of measurement results to simulation software.
*An electronic load device and current probe are required for this measurement.

You can create a Cole-Cole plot of the measurement results.

A Cole-Cole plot is a graph in which the real part of the frequency response function is plotted on the horizontal axis and the imaginary part on the vertical axis.
This is useful for estimating the equivalent circuit.

The frequency response of a speaker is a key factor in determining its performance. The OS-4100 connects the signal output of the DS-5000 to the speaker's amplifier and captures the resulting sound with a sound level meter and microphone to measure the speaker's frequency response. It also features an automatic cutoff frequency detection function (cutoff search function). Furthermore, it incorporates two calculation methods: the FRA method allows for high-precision acquisition of data for each frequency, while the FFT method allows for instantaneous acquisition of characteristics across the entire frequency band to be measured.

Frequency response is sometimes measured to evaluate the characteristics of electrical systems such as filters and amplifiers.
The OS-4100 allows for high-resolution measurement of frequency characteristics.
It also features a function that automatically finds the cutoff frequency.

*The OS-4100 can perform measurements (data acquisition) using the DS-5000 (hardware).
For more details about the DS-5000, please click here.

Windows 11 Enterprise ^* has been tested for operation in a standard Windows environment with standard settings (standard policy settings).
Operation in environments where security settings, group policies, or third-party security software have been modified from the standard settings is not guaranteed. Therefore, support may be limited.

We offer a special bundle price that includes both the hardware (DS-5000) and the software (OS-4100 frequency response measurement software).
Other sets are also available, such as 3-channel 40kHz and 2-channel 100kHz. For details, please contact our sales office or your nearest dealer.

This is a great value package that includes frequency response measurement software (OS-4100) and DS-5000 (FFT analyzer) hardware.

最終更新日:2025/10/20