Introduction
There are three types of Earthquake Shaking Tables: hydraulic type, mechanical type, an electromagnetic type. An earthquake shaking table is an indispensable device in structural earthquake resistance, natural frequency measurement, vibration analysis. The cost of a shaking table depends on its size, performance, and the corresponding supporting equipment. Generally, it costs several hundred thousand to over a million us dollars to build one shaking table and the maintenance costs are high. Therefore, it may be too costly for many institutions and new institutions of science and engineering to buy such equipment. Even they could afford and purchase such equipment, it would still be difficult
and unsuitable for it to be used for general teaching purposes. The “WS-Z30 earthquake shaking table system” produced by our company is specially designed for teaching and training in institutions of science and engineering. It has nearly the same features and exactly the same content of experiment of a large vibration table but with much lower costs. It is very suitable for teaching and training. It enables students to study through experiments, to understand and master the methods needed in vibration experiments, thus laying the foundation of their future involvement for the construction of medium or large vibration tables.
In addition to teaching and training, this system can also be used for the vibration assessment test of small devices, such as precision electronic equipment, handheld devices, computer hard drives, sensors, MEMS sensors, and other equipment. Another usage of the system is the calibration of sensitivity and frequency response curves of other sensors as long as a standard accelerometer (such as B&K’s accelerometer for calibration) is available. Sensor calibration is necessary for the study of sensors, engineering tests, field tests, vibration monitoring, etc.
The Configuration of the System
• Horizontal and Vertical table
• Exciter
• Power Amplifier
• Control Instrument
• Charge Amplifier with two channels
• ICP Acceleration Sensor Amplifier with eight channels
• 1 Piezoelectric Accelerometer
• 6 ICP Accelerometers
• Standard Industrial Cabinet
• 6 stories frame structure model
• Teaching Software with modal shapes animation
• ComputerContents of the Experiment
(1)Earthquake simulation; Generation and Application of an Artificial earthquake wave; Calculation of the accelerating response spectrum of earthquake time history
(2)Test of structural modal shape by the excitation of white noise
(3)Beat wave simulation
(4)Sine wave simulation
(5)Random waves simulation
Basic Specification
• Shaking Table, Exciter and Power Amplifier (3 Options)
|
100N Shaking Table
( WS-Z30-10 ) |
300N Shaking Table
( WS-Z30-30 ) |
500N Shaking Table
( WS-Z30-50 ) |
| Horizontal table | Horizontal table | Horizontal table |
| Maximum Load: 10,000g (22.06 lb) Weight: 7,100g (15.66 lb) Dimension: 400x300x22mm (15.76×11.81×0.866″) |
Maximum Load: 20,000g (44.12 lb) Weight: 9,500g (20.96 lb) Dimension: 460x346x22mm (18.11×13.62×0.866″) |
Maximum Load: 30,000g (66.18 lb) Weight: 11,500g (25.37 lb) Dimension: 506x380x22mm (19.92×14.96×0.866″) |
| Vertical table | Vertical table | Vertical table |
| Maximum Load: 500g (1.103 lb) Weight: 177 g (0.391 lb) Dimension: 66x10mm ( 2.6×0.39″) Material: Aluminum |
Maximum Load: 1,000g (2.206 lb) Weight: 177g (0.39 lb) Dimension: 66x10mm ( 2.6×0.39″) Material: Aluminum |
Maximum Load: 2,000g (4.41 lb) Weight: 450g (0.99 lb) Dimension: 100x10mm ( 3.94×0.39″) Material: Aluminum |
| Exciter | Exciter | Exciter |
| Model: JZ-10 Frequency range: 5 to 4000Hz Maximum displacement: ±3mm Exciting force: 100N |
Model: JZ-30 Frequency range: 3 to 3500Hz Maximum displacement: ±3mm Exciting force: 300N |
Model: JZ-50 Frequency range:1 to 3000Hz Maximum displacement: ±6mm Exciting force: 500N |
| Power Amplifier | Power Amplifier | Power Amplifier |
| Model: GF-100 Distortion: <0.5% Noise: < 3mV Output resister: 1 Ohm Frequency range: 1 to 10000Hz Output current: 10A Output voltage: 15V Power: 100VA Power supply: AC110V to AC220V Dimension: 440x480x160mm (17.34×18.92×6.30″) |
Model: GF-300 Distortion: <1% Noise: < 5mV Output resister: 0.6 Ohm Frequency range: 1 to 10000Hz Output current: 15A Output voltage: 25V Power: 300VA Power supply: AC110V to AC220V Dimension: 440x480x180mm (17.35×18.91×7.09″) |
Model: GF-500 Distortion: <1% Noise: < 10 mV Output resister: 0.5 Ohm Frequency range: 1 to 10000Hz Output current: 25A Output voltage: 25V Power: 500VA Power supply: AC110V to AC220V Dimension: 440x480x180mm (17.35×18.91×7.09″) |
• Control Instrument and Front Panel
Model: WS-5932Z/U160216-DA2
A/D Parameters:
Channels: 16
Resolution: 16Bits
Input range: ±10VDC
Total sample frequency: 200kS/s
D/A parameters:
Channel: 1
Output range: ±10VDC
Output mode: sine wave, random wave Power supply: Single-phase AC110V or AC220V
Relative Humidity: <85%RH
• Charge Amplifier and Front Panel
Model: WS-2411Z
Channels: 2
Charge input range: 0.1pC to 50000pC
Voltage input range: 0.1V to 5V
Frequency range: 0.16Hz to 20kS/s
Integral highpass filter (Hz): 0.1 to 100,1.0 to 1k,10.0 to 10k
Lowpass filter (Hz): 10,20,50,100,200,500,1k,2k,5k,10k,20k, Decay rate is 140dB/Oct.
• ICP Acceleration Sensor Amplifier and Front Panel
Model: WS-4601Z
Channels: 8 ICP input and 8 voltage output
Analog output voltage: ±10V
Gain: 1 or 10
• Piezoelectric Accelerometer
Model: BZ1107
Quantity: 1
Sensitivity: 20pC/m/s2
Frequency range: 0.2Hz to 6kHz
Weight: 38g
• ICP Accelerometer
Model: YD81D-V
Quantity: 6Sensitivity: 10mV/m/s2
Frequency range: 0.5Hz to 10kHz
Weight: 25g
• Sample Model
6 stories frame structure model
• Teaching Software
The software’s name is Vib’SQK. The software may control the teaching instrument. It performs all experiments on the list. It also has a function to show the model’s modal shape’s animation.
