Frequency response measurement software
The "Frequency Response Measurement Software" being released this time is software that allows anyone to easily measure the transfer function (frequency response function) of mechanical structures and control circuits at high speed and with high resolution.
This device is used in conjunction with the DS-5000 hardware. It can be used for various applications involving the measurement of frequency responses, such as measuring the natural frequencies and damping ratios (loss coefficients) of electronic components and mechanical structures, evaluating the characteristics of control circuits (servo analysis, gain margin, phase margin), and measuring the AC impedance (Cole-Cole Plot) of batteries.
This product is a successor to the previous "DS-3000 "ESUFEEL" Series Servo Analysis System," improving its basic performance and incorporating new features to meet the needs of existing users. It features improved functionality such as faster calculation speeds and an increased maximum number of measurement channels (up to 42 channels), as well as new functions like step response measurement.
By combining it with the measurement and analysis software "O-Solution," a single piece of hardware (DS-5000) can perform various measurements, including evaluation of control characteristics (servo analysis), vibration testing of exciters, hammering tests, and sound recording.
Features
| Accelerated calculation | The calculation process in the low-frequency range, which requires significant measurement time, has been accelerated. (Compared to our previous models, this represents a 20% to 30% reduction in processing time.) |
| High resolution | Equipped with an automatic resolution function. The sampling period near the resonant frequency is automatically refined, enabling measurements with high frequency resolution. |
| Multi-channel measurement | We measure multi-channel frequency response functions, including vibration tests with up to 42 channels. |
| Arithmetic method | It features two types of calculation methods (FRA method and FFT method). The FRA method enables highly accurate measurements with a wide dynamic range. The FFT method allows for measurement across a wide frequency band in a short amount of time. |
| Step response function | In addition to frequency characteristics, time-domain response performance can also be evaluated. |
| Data Comparison | It can read data from the measurement and analysis software "O-Solution" and frequency response functions measured with conventional models. |
Target markets and examples of measurement applications
- Control characteristics of robot arms, control characteristics of hydraulic actuators
- Acoustic characteristics of speakers, vibration characteristics of electronic components (MEMS, etc.)
- Motor rotation control characteristics (servo analysis), coupling response characteristics
- AC impedance measurement of batteries and fuel cells
Product overview
OS-4100 Frequency Response Measurement Software Specifications
| Number of measurement channels | 40 kHz type, 3 to 42 channels (input) 100 kHz type, 2-4 channels (input) |
| Measurement mode | Selectable between FFT mode and FRA mode. |
| Dynamic Range | 160 dB (FRA mode 40 kHz/100 kHz unit) 130 dB (FFT mode, 40 kHz unit) 120 dB (FFT mode, 100 kHz unit) |
| Input format | Single-ended (each channel isolated) |
| Inter-channel phase accuracy | ±0.1° (below 20 kHz), ±0.7° (above 20 kHz) |
| Measurement display graph | Bode plot, Nyquist plot, Coqad plot, Nichols plot, Cole-Cole plot, Monitor waveforms (time-domain waveforms and power spectra) |
| Amplitude control function | It is possible to control the amplitude of any channel. It is possible to control the exciter so that the amplitude of any channel remains constant. |
| Automatic resolution function | The system automatically determines the optimal resolution (curve shape) based on the frequency characteristics (shape of the curve) of the object being measured, enabling accurate measurement. |
| Step response function | Temporal response performance can be determined. By applying a step-like signal to the target object, it is possible to automatically calculate rise time, overshoot, and other parameters from the response signal. |
| Addition function (DS-0545) | When measuring control characteristics, it is necessary to inject disturbance noise for measurement purposes. The DS-0545 2ch signal output unit features an addition function, allowing it to inject disturbance noise into the control circuit of the target object. |
| External control (OS-0410) | External control function for OS-4100. It is possible to communicate with customer-created software via TCI/IP, perform measurements under pre-defined measurement conditions, and save the data. |
*This product requires a separate DS-5000 series (hardware) to use.
Additionally, a signal output option (DS-0543 2ch external input & 1ch signal output unit or DS-0545 2ch signal output unit) is required.
