Modal Analysis System – High-Precision Experimental Modal Analysis Solution from ECON

 

Table of Contents

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What Is a Modal Analysis System?

In modern product development, understanding the dynamic characteristics of structures is essential to prevent resonance, reduce vibration, improve durability, and optimize product performance.

Modal Analysis is a testing technique used to determine the inherent dynamic properties of a structure, including:

• Natural Frequency

• Mode Shape

• Damping Ratio

• Dynamic Characteristics

These parameters enable engineers to understand how a structure behaves under dynamic loading, validate CAE/FEM simulations, identify structural weaknesses, and optimize designs before mass production.

Experimental Modal Analysis (EMA) is typically performed using a combination of a modal exciter, accelerometers, force sensors, and a dynamic signal analyzer.

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ECON Modal Analysis Solution

The ECON Modal Analysis System is a complete solution for high-precision structural vibration testing and modal parameter identification.

The system integrates advanced hardware and software, allowing engineers to perform Experimental Modal Analysis efficiently across various industries.

A typical system consists of:

• Modal Exciter

• Dynamic Signal Analyzer

• Mini Power Amplifier

• Accelerometers

• Force Sensor or Impact Hammer

• Modal Analysis Software

• Mounting Fixtures and Cables

The solution supports both Modal Exciter Testing and Impact Hammer Testing, while remaining compatible with professional modal analysis software such as Modal Genius and ME'scope.

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How Does the Modal Analysis System Work?

A typical Experimental Modal Analysis process includes the following steps:

1. Excite the test specimen using either a Modal Exciter or an Impact Hammer.

2. Accelerometers measure the vibration response of the structure.

3. The Dynamic Signal Analyzer simultaneously acquires all response signals.

4. The software calculates the Frequency Response Functions (FRFs).

5. Modal parameters are extracted, including:

   • Natural Frequency

   • Mode Shape

   • Modal Damping

   • Modal Mass

   • Modal Stiffness

The results provide a comprehensive understanding of the structural dynamic behavior, enabling engineers to improve product performance and reliability.

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Key Features of the ECON Modal Analysis System

Wide Frequency Range

The VE-M Series Modal Exciter supports excitation frequencies from DC up to 10,000 Hz, covering the majority of industrial and research modal testing applications.

High Excitation Force

Multiple shaker models are available with excitation forces ranging from 100 N to 1,000 N, making the system suitable for both lightweight components and large structures.

High Measurement Accuracy

The Dynamic Signal Analyzer offers:

• Simultaneous multi-channel data acquisition

• Anti-aliasing filters

• 24-bit high-resolution measurement

• High-accuracy frequency spectrum analysis

Multiple Excitation Methods

The system supports various excitation signals, including:

• Sine Sweep

• Random Excitation

• White Noise

• Impact Hammer

This flexibility allows engineers to select the most appropriate testing method for different applications.

Expandable Architecture

The Dynamic Signal Analyzer supports configurations from 4 to 64 channels, with expansion capability to thousands of synchronized channels for large-scale testing.

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Typical Technical Specifications

Specification	Value
Modal Exciter Model	VE-51100M
Maximum Excitation Force	1,000 N
Frequency Range	2 – 6,500 Hz
Maximum Acceleration	600 m/s²
Maximum Payload	20 kg
Maximum Stroke (Peak-to-Peak)	25.4 mm
Mounting Thread	M6
Cooling Method	Air Cooling
Exciter Weight	130 kg
Dimensions	472 × 394 × 510 mm
Power Amplifier	VSA-H152A
Amplifier Power	1,500 VA
Dynamic Signal Analyzer	MI-7208
Excitation Methods	Modal Exciter or Impact Hammer
Compatible Software	Modal Genius, ME'scope, and other modal analysis software