Dewesoft X offers all major arithmetic, logic, algebra and measure functions which can be combined with any measured of calculated channel to create sophisticated formulas. Math formulas in Dewesoft X include the following functions:
Dewesoft X has many different types of filters grouped into three filter modules:
Classical electrical filters like Chebyshev, Butterworth and Bessel can be made using IIR filter module. These filters allow also single and double differentiation and integration.
FIR filters are even smarter. When signals are filtered, filter introduces a phase shift, so the output is delayed compared with input. Dewesoft FIR filter filters data without any phase shift or delay, so it is perfect for analysis of signals which doesn't allow having phase shifting or delaying.
FFT filter performs an FFT calculation and cuts a certain range of signal to create sharpest possible filtering.
Dewesoft X offers several statistical calculation grouped into following modules:
Statistic like average, RMS, QRMS, Minimum, Maximum, Crest, Peak, Peak-Peak, Variance and standard deviation can be calculated in specific time intervals, as a single value or based on events.
For comparing the data with predicted curve or with previously measured data Dewesoft X offers modules to create time, FFT or x-y based reference curves and use that as a limit criteria. There are four types of reference curves in Dewesoft X:
This quite smart module can calculate frequency from a sine wave with precision of 1 mHz even if the input sampling rate is not very high.
You can learn more about Dewesoft X Math by downloading and getting tuned into the Dewesoft Math guide.
Dewesoft X includes very extensive module which can calculate power and power quality parameters from measurement of voltage and current.
It has software PLL which measures the base frequency down to 1 mHz resolution. The line frequency can be 50, 60, 400, 800 and also variable. In fact, Dewesopft X power module is, as we hear from our customers, the only PC based software which can measure correctly variable frequency sources, like frequency inverters
Dewesoft X calculates single or three phase power with or without current channels. It calculates active, reactive and total power. It also calculates base and higher harmonics of voltage, current, power, and impedance. The background harmonics can be easily subtracted to allow differential measurement to normal operating conditions.
The power module calculates also line unbalance, periods and flicker values according to the power quality standard.
Order tracking is a procedure to transform data, mostly from vibration, to the angle domain based on the frequency of rotation. If we have a rotary machine, many of excitation forces are related to some harmonic component of rotation (for example unbalance or coupling misalignment). When the frequency of excitation is the same as the natural frequencies of structure, we get resonance effects.
Dewesoft X order tracking module takes time domain data and transforms the data based on frequency of rotation and extract any number of harmonics (amplitude and phase angles) which can be displayed in Bode, Nyquist, 3D FFT, real time x-y and orbit plot. The plane view FFT clearly shows the excitation forces, natural frequencies and all the resonances so it gives a clear picture of the dynamic behavior of the machine.
Torsional vibration module calculates the torsion angle and angular vibration measured from two encoders mounted on each side of the shafts. The difference between the rotations of each side is the torsion twist of the measured shaft. Torsional vibration can be an input for order tracking to give clear idea about dynamic behavior of shaft.
Several torsional vibration modules can be combined to measure the complicated transmissions.
Todays vehicle engines can't be developed without the measurements of combustion parameters. The engine speed, pressure inside the cylinder as well as other parameters like needle lift, intake pressures and others are the base for calculating combustion parameters like maximum pressure, position of maximum pressure, pressure derivative, heat release, cylinder temperature, knocking and others.
The RPM data can be acquired from virtually any sensor in the car or a special externally mounted encoder, therefore the same system can be used on the test bed or in the vehicle during normal driving.
Dewesoft X offers a powerful FRF and modal analysis functionality. This allows to measure transfer functions of mechanical structures with hammer or shaker excitation. The software allows creating or importing geometry of the structure for quick visualization of measurement points.
The chosen natural frequencies can be observed as animation of the structures. Measured data can be exported as UNV files, which is easily imported by the most important analysis packages.
It is also used to define transfer functions of electrical circuits like amplifiers or filters.
Sound level math section allows calculating typical parameters for sound level measurements from a single microphone. It allows Dewesoft software to be used as the typical sound level meter with A, B, C or D weighting. With appropriate hardware (24 bit ADC) it can easily fulfill all the requirements for Class I sound level meter.
Dewesoft X calculates several parameters online:
|Lp (8PL)||Time (F, 8, I) and frequency weighting (A, B, C, ...) sound level (dB)|
|Lpk||Current maximum sound level (dB)|
|Weighted raw||Frequency weighted (A, B, C, ...) sound level (dB)|
|Log||Equivalent sound level (dB)|
|Lim||Pulse weighted equivalent sound level (dB)|
|Lpkmax||Absolute maximal sound level (dB)|
|Lo||Sound exposure [dB]|
|Lmax, Lmin||Maximum and minimum Lp sound level|
|LAF50, LAF10, ...||Classes for 0, 1, 1, 5, 10, 50, 90, 95 and 90 dB|
Sound power measurements are important for noise measurements and qualification of noise emission from machines and products (CE mark). They can be done with two measurement procedures, measuring the sound pressure or the sound intensity. Both are supported with DS MOD DSA system. Following corrections will also be done:
Human vibration is a measurement of effect of vibrations to human body. Especially on working places exposed to vibrations there is a big chance of permanent damage to some parts of human body.
The human vibration module provides measurements to be able to judge the risk of such damage. It is compliant with following standards:
Dewesoft X provides an easy to use and straightforward tool for single and dual plane balancing. This add-on is included as an option with every Dewesoft instrument. One or two acceleration sensors and a tacho probe are needed for balancing.