Open-Loop Vibration Test System

Open-Loop Vibration Test System

Thank you for your interest in our products! As a professional manufacturer of vibration testing systems, we strive to provide the most suitable testing solutions to ensure that your choice delivers the greatest value. Below is our proposal:

1.Configuration Options

A vibration open-loop test system (i.e., a vibration excitation and data acquisition/analysis system) serves as the infrastructure for product reliability testing, modal analysis, and structural characteristic studies. Unlike closed-loop control systems, which use sensor feedback to adjust the output in real time, this system applies a predefined excitation signal to the test object and records its response.

2.Overview of Our Main Products

A.Excitation, Measurement, and Calibration Systems

1.1. Signal Generator

Key Features

◆  Features advanced DDS technology, dual-channel output, 100 MSa/s sampling rate, and 14-bit vertical resolution

◆  Outputs 5 standard waveforms and includes 48 built-in arbitrary waveforms

◆  Extensive modulation capabilities: AM, FM, PM, FSK

◆  Outputs linear/logarithmic sweep and pulse train waveforms

◆  Extensive I/O capabilities: waveform output, sync signal output, external modulation source, external 10 MHz clock source, external trigger input ◆  Channel coupling and channel cloning functions

◆  Built-in high-precision, wide-bandwidth frequency counter with a measurement range of 100 MHz to 200 MHz (single channel)

◆  Standard interfaces: USB Device, USB Host

◆  Seamless connectivity with DS1000 series digital oscilloscopes

◆  Equipped with the powerful arbitrary waveform editing software UltraWave

1.2. Small Vibration Test Stand

The DC Series compact electric vibration testers utilize rare-earth neodymium-iron-boron permanent magnets and feature a built-in short-circuit ring. They are characterized by their compact size, light weight, wide frequency range, rational design, and high reliability. These testers are suitable for environmental vibration and fatigue testing of large and medium-sized instrument components, as well as for measuring the dynamic response, resonance frequency, and mechanical impedance of small and medium-sized structures, and for modal analysis. They can also serve as compact vibration test stands for the calibration, verification, and testing of sensors.

1.3. Linear Power Amplifiers

The XY Series power amplifiers feature a standard 19-inch chassis and a true-color LCD display that shows current, voltage, signal frequency, and protection status. They offer linear power output with low distortion and an excellent signal-to-noise ratio. The amplifiers include output voltage and current indicators, as well as monitoring terminals, and are equipped with multiple protection functions. They are capable of directly driving MS Series modal exciters and DC Series compact vibration test stands.

1.4. Piezoelectric Standard Accelerometer (PE)

Key Features:

◆  Suitable for back-to-back comparison calibration

◆  Stable performance

◆  Wide frequency range

▲Temperature curve

▲Typical frequency response curve

B.Low-noise charge amplifier

Product Model: XY8102A

Features:

◆  Benchtop, single-channel, low-noise

◆  Two input modes: charge and voltage

◆  3-bit sensor sensitivity normalization adjustment

◆  Multi-stage adjustable high-pass and low-pass filters; overload status indication

C.Dynamic Signal Analyzer

◆  Built-in 4 mA / 24 V constant-current circuit, allowing direct connection to IEPE-type accelerometers, velocity sensors, force sensors, microphones, and other devices for signal testing and analysis;

◆  Voltage signal measurement, compatible with thermocouples, eddy current sensors, magnetoelectric speed sensors, strain sensors, and various transmitters (conditioners), enabling testing and analysis of multiple physical quantities;

◆  24-bit high-precision A/D converter with 4-channel parallel synchronous sampling, up to 128 kHz per channel, featuring low noise and high accuracy;

◆  Compact, portable dynamic signal analyzer powered via USB interface, eliminating the need for an external power supply;

◆  Comes with user-friendly, feature-rich data acquisition and analysis software that allows configuration of parameters such as input type, range, sensor sensitivity, and sampling rate. It enables real-time data transmission, display, and analysis, and can record multi-channel signals continuously and in real-time over extended periods using the computer’s hard drive.

A vibration sensor test plan is a critical step in ensuring that the sensor can accurately measure vibration signals and maintain stable performance under various environmental conditions. The following is a detailed vibration sensor test plan, covering pre-test preparation, test procedures, data processing, and result analysis:

I. Preparations Before Testing

1. Selecting the appropriate vibration sensor:

Select a vibration sensor that meets your testing requirements, taking into account parameters such as dynamic range, frequency response range, sensitivity, and noise. Ensure that the sensor complies with the physical and chemical requirements of the testing environment, such as temperature, humidity, and corrosion resistance.

2. Preparation of Test Equipment:

Prepare a vibration test stand or vibration generator to produce controlled vibration signals. Prepare auxiliary equipment such as a signal generator, oscilloscope, and data acquisition system for signal generation, display, and recording.

3. Calibrate the sensor:

Perform static calibration to ensure the accuracy of the sensor’s zero point and sensitivity parameters. Perform dynamic calibration by applying known vibration signals to the sensor using an acceleration gradient sensor or a vibration test bench to calibrate its frequency response and sensitivity.

II. Test Procedure

1. Install the sensor:

Attach the vibration sensor to the test object, ensuring it is securely mounted and makes good contact with the object. If necessary, multiple sensors can be installed to perform multi-point testing.

2. Set test parameters:

Set parameters such as the vibration frequency and amplitude of the vibration test stand to ensure that the test conditions meet the test requirements. Set parameters such as the sampling rate and resolution of the data acquisition system to ensure that vibration signals are recorded accurately.

3. Conduct vibration testing:

Start the vibration test stand to generate a vibration signal. At the same time, start the data acquisition system to record the vibration signal output by the sensors. If necessary, adjust the vibration test stand’s parameters to conduct tests under different conditions.

III. Data Processing and Analysis of Results

1. Data Collection:

Import the vibration signals recorded by the data acquisition system into a computer for analysis.

2. Data Analysis:

Perform a spectral analysis of the vibration signals to determine their frequency components and amplitude distribution. Compare vibration signals under different test conditions to analyze the patterns of change in vibration characteristics. Calculate statistical parameters of the vibration signals, such as mean, variance, and peak-to-peak value, to assess the stability and reliability of the vibration signals.

3. Evaluation of Results:

Evaluate whether the performance of the vibration sensor meets the test requirements based on the test results. Analyze any anomalies or fault characteristics that may be present in the vibration signals to provide a basis for subsequent fault diagnosis and repair.

IV. Important Notes

1. Safety Precautions:

When conducting vibration tests, ensure the personal safety of test personnel to prevent accidents. Adhere to relevant safety operating procedures and regulations to ensure the safe operation of testing equipment.

2. Test Environment Control:

When conducting vibration tests, conditions such as temperature and humidity in the test environment should be controlled as much as possible to minimize the impact of environmental factors on the test results.

3. Data Backup:

Before processing and analyzing data, you should back up the raw data to prevent data loss or corruption.

By following the steps above, you can develop a comprehensive and detailed vibration test plan for the sensor, ensuring that it can accurately measure vibration signals and maintain stable performance in various environments.

Yangzhou Xiyuan Electronic Technology Co.,Ltd.

#77 Yeqiao Road, Liandong U Valley slender West Lake Innovation port, building 10-2,Hanjiang District, Yangzhou,Jiangsu,China

Mobie Phone: +86 180-5105-8377

Tel: +86 514-82885589

Whatsapp:+86 182-6066-6867

Email: sale1@yzxyt.com

Fax: +86 514-82885089