System configuration of high-frequency vibration testing machine
According to user needs, the program uses an electric vibration test system to carry out the mechanical environment test and evaluate the reliability of the product.
Recommended system configuration:
① The test conditions provided by your company;
② Test type: Sine sweep; Random; Classic Shock;
③ Frequency response range: 1-2500Hz
④Formula: A(g)=(2πf)2Dcm/980≒A=0.002DmmF2 D=A/0.002F2
F=M(kg) ×A(g)
Detailed Specifications of XB-OTS-EV203 Vibration test machine
| A03S15 Parameters of electromagnetic excitation generator | ||||
|---|---|---|---|---|
| Sine thrust | 300Kg.f peak | |||
| Random thrust | 300Kg.f r.ms | |||
| Impact thrust | 600Kg.f peak | |||
| Frequency Range | 1～4000 Hz | |||
| Continued displacement | 40 mm p-p | |||
| Maximum speed | 2m/s | |||
| Maximum acceleration： | 100G(980 m/s2) | |||
| Relationship between maximum load and acceleration: F=M.A | ||||
| 5G (50 m/s2) | 10G (100 m/s2) | 20G (200 m/s2) | 30G (300 m/s2) | |
| 114kg | 54kg | 24kg | 14kg | |
| First-order resonance frequency: | 2600 Hz±5% | |||
| Maximum load: | 120 kg | |||
| Vibration isolation frequency: | 2.5 Hz | |||
| Moving coil diameter | Ф150 mm | |||
| Dynamic weight: | 3kg | |||
| Magnetic flux leakage | ＜10gauss | |||
| Allowable eccentric moment | 500N.m | |||
| Equipment size | 780mm×570mm×670mm | |||
| Weight | 460kg(Excluding Horizontal expansion table) | |||
| SA03K Digital switching power amplifier | ||||
| Output Power: | 3KVA | |||
| The output voltage： | 120Vrms | |||
| Output current: | 30Arms | |||
| Amplifier efficiency | Better than 90% | |||
| Signal to noise ratio: | ≥65dB | |||
| Amplifier size | 910mm×610mm×1150mm | |||
| Servo protection system | ||||
| Features: | Temperature, wind pressure, over displacement, over voltage, over current, input under voltage, external fault, control power supply, logic fault, input missing and equal | |||
| Digital vibration controller | ||||
| Hardware Configuration: | 2 simultaneous input channels, 1 output channel | |||
| Control function module | Sine, Random, Typical Shock | |||
| Control computer | Original brand computer with LCD monitor | |||
| Software | Chinese/English operation, time domain and frequency domain analysis, signal source, sine sweep frequency analysis, etc. can be performed. It can automatically generate WORD test report, display, store, set test parameters and analysis functions of signals and data. | |||
| System acceleration specifications | Frequency range: 1—12000Hz Sensitivity: 30PC/g Temperature range: -40-180℃ |
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| VT40 Vertical expansion table with auxiliary support system | ||||
| Material quality: | Aluminum/magnesium alloy, hard surface treatment | |||
| Table size | 400×400 mm | |||
| Fixed hole position | M8 Rectangular distribution stainless steel threaded sleeve, durable and wear-resistant | |||
| Frequency limit | 2000 Hz | |||
| Weight | 14Kg | |||
| H404 Horizontal slide | ||||
| Material quality | Aluminum/magnesium alloy | |||
| Table size | 400×400 mm | |||
| Fixed hole position | M8 Rectangular distribution stainless steel threaded sleeve, durable and wear-resistant | |||
| Frequency limit | 2000HZ | |||
| Weight | 25kg | |||
| B751D Cooling fan(with muffler) | ||||
| Power | 0.75KW | |||
| Fan flow: | 11 m3/min | |||
| Fan size: | 500*630*850mm | |||
| Fan weight: | 45KG | |||
| Electrical requirements: | ||||
| Power supply: | AC3 Phases 380V/50Hz,75 KVA(Could be customized according to customers requirement) | |||
| Compressed air: | 0.6Mpa | |||
| Grounding resistance: | ≤4Ω | |||
Equipment breakdown Introduction
1. vibratory table
- moving coil
The shaking table is equipped with a moving coil for casting and manual processing, a photoelectric pneumatic load supporting system, and double-bearing axial orientation. Double-bearing steering is a unique function that helps reduce the axial dynamic cross and rotation in the vibration test process. It also has superior durability. - excitation coil
A double magnetic circuit is adopted, magnetic flux is low, and magnetic field is uniform. - the surface of the table
With advanced phosphating and automotive baking technology, it has a long-term anti-wear and rust-preventive function. - table body refrigeration:
A low-noise fan is used to improve the air inlet structure of the platform. The excitation coil adopts a honeycomb air duct and a middle magnetic ring with a double channel shunt air duct. A new type of air duct is designed to enhance the cooling effect.
2. SA digital switch power amplifier
SA series digital switching power amplifier adopts reliable MOSFET or IGBT technology.
- has high stability and reliability
- meets the requirements of the EU “CE” standard
- uses sinusoidal frequency doubling PWM technology, and the power amplifier has a high SNR.
- uses switching power supply’s working principle and high conversion efficiency.
- using electronic automatic current sharing technology
- has good security performance.
3. Servo protection system
Its complete protection function has over-voltage, under-voltage, phase, logic fault, power module direct, over-temperature, over-current, output over-voltage, driving power, platform over-displacement, table temperature, external linkage, etc.
4. Vertical expansion platform
The extended platform is usually used for larger installation specimens, which can be square, circular, or user-defined. To reduce the dynamic characteristics of the extended platform, all extended platforms must analyze their modal frequencies by modeling. These expanded platforms are generally made of magnesium alloys and attached to damping materials.
5. horizontal sliding table
The design of the horizontal smoothing platform has a high overturning moment and lateral restriction. This design concept, combined with the standard horizontal sliding table device, has a high dynamic torque limit while maintaining the damping characteristics of the guided oil film. The smoothing table comprises a sliding plate, a connecting head, a natural granite slab, a horizontal sliding table base, and an independent oil source.
6. Photoelectric automatic middle system
Automatically adjust the position of the moving coil to keep it in balance. The automatic centering system ensures that the moving coil is always at the center of the loading and unloading process.
Installation Preparation Requirements of EV203 Vibration Testing Equipment
1. Installation conditions
- three-phase power supply system power supply
(accept customer requirement:380Vac 60Hz 3Phase )
Frequency: 60Hz
Line, the line voltage: 380V
Voltage fluctuation range: <10% - the user is equipped with a three-phase system independent of the use of a vibration isolation platform power switch
The entire system’s maximum output power is 16kVA
2. The use of environmental conditions to check
- temperature range : 0 ℃ ~ 40 ℃;
- range :0- 90% humidity, non-condensing
- The installation site floor is flat, with non-corrosive gases surrounding it, and there is less dust, preferably with air conditioning.
3. Ground
- Vibration test systems must be equipped with laboratories’ dedicated ground.
- Earth ground resistance of less than 4Ω.
4. Lifting condition check
Users should be ready for the appropriate spreader truck
characteristics of the vibration controller
A. high performance and reliability
B. simple operation
C. powerful functions and flexibility
D. Safety test
E. test report generation
Digital EV203 vibration controller function
Random control (Random)
According to the user-defined power spectrum diagram (formulated by the target spectrum editor), random control is used to output Gauss random signals continuously by the transfer function equalization method. The real-time and accurate multichannel closed-loop control is executed quickly. The built-in adaptive control algorithm can make the system nonlinear, resonance frequency, and load change fast.
- Frequency range: 0~4800Hz, extensible to 18750Hz
- Resolution: 10020040080016003200 spectral line
- Control power range: >90dB
- Control strategy: single channel control, weighted average, maximum, and minimum.
Sinusoidal control (Sine)
Sine provides sinusoidal and sine-swept signals of analog quality and controls the amplitude of the sine waves. The resident level and resident frequency can be set, and the resident duration can be determined by setting the time or the number of sinusoidal signals.
- Frequency range: 1Hz~5000Hz, can be extended to 10000Hz
- Closed loop time: 5ms
- Harmonic distortion: <-100dB
- Frequency sweep mode: linear sweep frequency 0~6000 Hz/min
- Logarithmic sweep 0~100 Oct/min
- Sweep direction: upwards and downward sweep frequency
- Sweep duration: set to sweep frequency and time.
Typical shock
Transfer function equalization method is used to support half sine wave, bell wave, rectangular wave, trapezoidal wave, front peak sawtooth wave, back peak sawtooth wave and triangular wave. The user can also input the pulse peak according to the need.
- Pulse duration from 0.5 to 3000ms
- Maximum analysis bandwidth 18750Hz
- Frame size: maximum 16384
- Meet the standards: MIL-STD-810 , ISO standard, user defined interrupt control limits.
