ES-3A vibration tester.pdf
High Precision Iec 68-2-6 Lab Led Universal Low Frequency Vibration Test Machine
Digital switching power amplifier
The system uses a digital power amplifier with sinusoidal pulse width modulation. The working principle is: using the high-frequency switching capability of the IGBT FET, the low-voltage signal input by the controller is amplified by the digital circuit and restored to the original signal, and then output to the moving coil of the vibrating table to promote the electric vibration. Taiwan movement.
The main components of the intelligent high voltage power amplifier are: front control, power amplifier module, protection circuit, power supply part and electric cabinet. The system adopts high voltage and small current output form, which reduces the power loss during transmission and achieves effective and reasonable impedance matching.
High Precision Vibration Shaker Parameters:
| Sinusoidal thrust | 300kgf |
| Random thrust | 300kgf rms |
| Impact thrust | 600kgf |
| Frequency Range | 5~2800Hz |
| Continuous displacement | 25.4mm |
| Maximum speed | 1.8m/s |
| Switching power amplifier |
| Amplifier output | 3.5kVA |
| Signal to noise ratio | >65dB |
| IF gain | ≥80 |
| Total harmonic distortion (at rated output) | Less than 0.5% when DC (0.1Hz) to 500Hz; less than 1.0% when 500Hz to 5000Hz |
| Power amplifier frequency response | DC (0.1Hz) to 4500Hz: ±3dB; |
| Mean Time Between Failure (MTBF) | >35,000 hours |
| Vertical expansion countertop |
| Table size | 600mm×600mm |
| Upper limit ope rating frequency | Sine 2200Hz, random 3500Hz |
| Counter weight | 30kg |
| Countertop material | Aluminum alloy |
| Vibration controller |
| operating system | Windows 7 |
| Operation interface | Chinese and English interface |
| Software function | Sine, random, classic shock, resonant search and resident |
Feature:
1. Well-designed dynamic circle skeleton, with a higher stage axial resonance frequency.
2. Two-magnetic circuit, magnetic flux leakage low, compact structure and rational.
3. Rocker Rod roller bearings straight and import-oriented composite body stiffness orientation, eccentric load capacity.
4. Trunnion isolation foundation dedicated to hormone use, the installation of mobile convenience.
5. Advanced technology move around the system to ensure that the dynamic circle of high reliability.
6. New duct design and enhance the cooling effect.
7. Static stiffness, dynamic stiffness of the bearing small balloon, raising the vibration table bearing capacity, improve low-frequency performance.
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