Active Member
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[China]
Address: The Third Industrial Area,Jingshan Village,Chashan Town,Dongguan City ,China
Contact name:
Dongguan Xinbao Instrument Co., Ltd. |
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5-2000HZ XYZ Axis Horizontal Vertical Vibration Test Machine
Vertical Vibration Reliability Test
Through the vibration controller of the signal source output to the power amplifier, amplified by the signal and then input to the vibration table body, generating excitation source, simulate the actual situation of the specimen to the vertical vibration test; through the acceleration sensor signal acquisition and input to Vibration control device, the output signal and feedback signal stacking calculation, to achieve the excitation source and the target spectrum of high degree of coincidence. The system is given by the signal target spectrum, to complete the vibration test of the specimen, the test specimen vibration durability, integrity and so on.
Test Content
Random vibration test according to the actual environmental requirements are the following types: broadband random vibration test, narrowband random vibration test, broadband random plus one or several sinusoidal signals, broadband random plus one or several narrowband random. The first two are randomized trials, the latter two are mixed type can also be classified into randomized trials. Stochastic control uses the transfer function equalization method to continuously output Gaussian random signals, and quickly performs real-time accurate closed-loop control. The built-in adaptive control algorithm can react quickly to the nonlinearity of the system. The random control also provides kurtosis control functions specifically designed for reliability enhancement tests. The working principle of the electric shaking table is based on the amperometric law of the current-carrying conductor acting in the magnetic field by the electromagnetic force
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Sine vibration test control parameters are mainly two, namely the frequency and amplitude. According to the frequency change and invariant divided into fixed frequency and sweep two. Fixed frequency test is mainly used for:
A) Resonance frequency processing: the vibration frequency of the product found in the frequency of the apparent resonance frequency, the provisions of the vibration parameters of the vibration amplitude to assess the product resistance to resonance vibration.
B) Resistance to constant frequency processing: In the known product using the ambient conditions of vibration frequency, can be used to determine the frequency of vibration test, the purpose is to assess the product at a given risk frequency to withstand vibration.
Sweep test is mainly used for:
A) product vibration frequency response (ie, the initial resonance check): to determine the stability of the resonance point and work to find the product resonance frequency, to do vibration-resistant treatment.
B) Anti-sweep processing: When the product in the frequency range of the use of non-resonant point, or there are several significant resonance point, must be anti-sweep processing, sweeping processing in the low frequency band positioning shift amplitude, high frequency band Using the logarithmic continuous scan of the amplitude of the constant acceleration, the crossover frequency is generally 55-72Hz, and the sweep rate is usually carried out by one octave per minute.
C) Final Resonance Check: Check the same method with product vibration frequency response to check whether the resonance point of the product has been changed after the vibration treatment to determine the reliability of the product after the vibration treatment.
Products in the processing, transportation and use of the process are often subject to a variety of transient impact load, the impact may cause product structure and performance damage or even failure. In order to determine the suitability of the product in the use and transportation process, it is necessary to carry out the simulated impact test of the product in the laboratory. The typical impact test function uses the transfer function equalization method to carry on the closed-loop control, supports all kinds of pulse type simulation.
System Performance parameters
| Vibration table | ||
| Sine thrust | 600kgf | |
| Random thrust | 600kgf | |
| Impact thrust | 1200kgf | |
| Frequency Range | 5～2000Hz | |
| Continued displacement | 51mm | |
| The impact of displacement | 51mm | |
| Maximum speed | 2m/s | |
| Maximum acceleration | 981m/s2 | |
| Moving coil diameter | Φ150mm | |
| Allow eccentric moment | ＞190N.m | |
| Load connection point | 6 piont | |
| Equivalent mass of moving parts | 6kg | |
| Countertops screw size (standard) | M8 | |
| Screw layout table (diameter, circumference) | 8 on Φ100mm,8 on Φ,200mm. | |
| Axial isolation frequency | ＜3Hz | |
| Maximum load | 120Kg (customer request 45Kg) | |
| Magnetic flux leakage | ＜1mT | |
| Dimensions (without packaging)(L×W×H) | 1600mm×985mm×850mm | |
| Vibration table Weight | 1850kg | |
| Amplifier output | 8kVA | |
| SNR | ＞65dB | |
| System Protection | The entire power amplifier has: Grid overvoltage, undervoltage power grid phase, logical failure, power module protection, power module temperature, output overcurrent, output overvoltage, power supply, displacement units, units body temperature, external linkage, etc. protection circuit, when any fault occurs, turn off the output, sound and light alarm. In addition to the above protection, it also has a protective function RMS values of tolerance protection, emergency stop devices, such as improving running. | |
| Rated output voltage | 120Vrms | |
| Amplifier efficiency | ＞95% | |
| Fan | ||
| Power | 0.75kW | |
| Airflow | 0.3m3/s | |
| Duct diameter | 120mm | |
| Pressure | 0.048kgf/cm2 | |
| Vertical extension table | ||
| Table size | 600mm×600mm | |
| Equivalent mass | 23kg | |
| Upper frequency | 2000Hz | |
| Countertop Materials | Aluminium | |
| Horizontal slide | ||
| Table size | 600mm×600mm | |
| Thickness | 30mm | |
| Countertops weight | 36kg | |
| Frequency | 2000Hz | |
| Bearing number | 1 | |
| Bearing weight | 0.58kg | |
| Connector Weight | 1.4kg | |
| Maximum Load | 300kg | |
| Countertop Materials | Aluminium | |
| Vibration controller | |
| Enter the number of channels | 2 voltage channels, 2 charge channels |
| Number of output channels | 1 Drive output, 1 COLA output |
| Resolution | 24-bit digital-to-analog converter (DAC / ADC) |
| Anti - aliasing filter | Analog anti-aliasing filter plus digital filter, stopband attenuation greater than 160dB / Oct |
| Coupling method | AC differential, AC single-ended, DC differential, DC single-ended, IEPE, TEDS (optional), charge |
| Enter the range | ± 10 VPEAK |
| controlling software | Sine control, random control, typical impact control, resonant search and presence |
