High frequency electromagnetic vibration testing machine

High frequency electromagnetic vibration testing machine

1、 Main purpose

This device is mainly used to detect early failures of products, evaluate their structural fatigue strength and stability. widely used inAerospace, automotive electronics, semiconductor chips, precision instruments, 5G communicationIn other fields, evaluate the productSinusoidal vibration, random vibration, shock response spectrumTesting in various modes is a tool for product quality certification (such as ISO, ISTA, MIL-STD).

2、 Working principle

Its core working principle isLaw of electromagnetic inductionThe device is composed ofSignal source (controller)Generate an electrical signal with the desired waveform (such as sine, random), and pass it throughpower amplifierAfter zooming in, input it intoVibration table bodyIn the dynamic circle. The moving coil is placed in a strong magnetic field (generated by a magnet or excitation coil), and after being energized, it is subjected to Lorentz force, thereby driving the specimen installed on it to move according to a predetermined law. passSensor (accelerometer)Real time collection of vibration signals and feedback to the control system to form closed-loop control, ensuring vibration accuracy.

High frequency electromagnetic vibration testing machine

3、 Main functions and features

• Broadband coverageThe frequency range can reach 5Hz to 3000Hz (or higher), covering most high-frequency vibrations that products may encounter in actual environments.

• Multi mode testingSupport sine fixed frequency/sweep frequency, random vibration, typical impact, and composite mode testing.

• high-precision controlAdopting fully digital closed-loop control technology to ensure the accuracy and uniformity of vibration values (acceleration, velocity, displacement).

• Intelligent ProtectionEquipped with multiple safety protection mechanisms such as over displacement, over current, and over temperature to ensure the safety of equipment and specimens.

• user-friendlyLarge touch screen and professional control software provide guided operation and powerful data management functions.

4、 Technical features

1. great accelerationCapable of generating no-load acceleration of up to 100g or more, meeting rigorous testing conditions.

2. Low distortionExcellent table vibration uniformity and low harmonic distortion ensure the accuracy of test data.

3. Efficient coolingAdopting strong wind cooling or water cooling system to ensure that the equipment can operate continuously and stably for a long time.

4. ScalableCan integrate a temperature and humidity chamber to achieveTemperature humidity vibrationThree comprehensive environmental stress screening.

5、 Application scenarios

• PCBA (Printed Circuit Board)Search for manufacturing defects such as virtual soldering and loose components.

• Chips and PackagingEvaluate the mechanical fatigue life of welding points and leads.

• Aircraft onboard equipmentSimulate high-frequency vibrations during aircraft takeoff, flight, and landing processes.

• auto partsTest the reliability of ECU, sensors, etc. in the engine compartment under harsh vibration environments.

• Research and TeachingUsed for research on material dynamics characteristics and validation of new product development.

6、 Structural Design

The equipment adopts modular and integrated design. mainlyPlatform body (including magnetic circuit, moving coil, guidance system), power amplifier, digital control system, cooling systemandmounting baseComposition. The structure of the platform is sturdy, using high magnetic permeability materials to form a low magnetic resistance magnetic circuit, in order to achieve high energy conversion efficiency. The dynamic coil adopts lightweight and high-strength composite materials, balancing rigidity and low mass to achieve high-frequency response.