SUZHOUSUSHI Testing Group

Aboutus

Suzhou Sushi Testing Group CO., LTD. (stock code: 3004l6,referred to as "ssT") is a leading domestic and internationallyrenowned provider of industrial product environmental adaptability and reliability test verification and analysis service solutions.Since its establishment in l956,sST has been working hard in the field of environment and reliability testing,focusingonimproving thereliability of industrial product and boosting the highquality development of the industry.SST is strivingtobecometheleaderintheresearch and developmentof domestic environment and reliability testing equipment,and an importantcontributortotheimprovementof industrial product quality and reliability.

TheformerSuzhou GeneralFactoryofTesting Instrumentswas foundedin1956,andonJanuary222015,thecompany waslistedontheGEMboardofthe Shenzhen Stock Exchange,with stock code:300416.In2019,sSTacquiredChongqing SDElto furtherexpandtheproductioncapacityoftestinginstrument,andinthesameyear,SSTacquiredShangaisT to enter the field of IC services,with the ability to provideafullindustrial chainof testing services.

MAINBUSINESS STRUCTURE

n

25+ CHAIN LABORATORIES WORLDWIDE

3+ DEVELOPMENT BASE

TestInstrument

Test Service

·Mechanical environment test system
·Climate environment test system
·Combined environment test system
·Analysis system
·Sensor
·Environmental test
·Reliability test
·Emc test
·Performance test
·Material test
·Software test
·Field test
· Integrated circuit verification and analysis
·Electronic test and certification

BASICPRINCIPLESAND SELECTIONGUIDES

CONSIDERATION FACTOR

Determine the Required Force

Working Principle

The electro-dynamic vibration shaker is based on the principle of electromagnetism.It generates ampere force by passing alternating current through the armature in a static magnetic field,which drives the armature to reciprocate.The force required for the test is generally related to the weight of the moving parts and the test acceleration.

01 Specifications

02 Standards

03
Sample
characteristics

Based on the above calculation results,a vibration test system that meets the test requirements is initially determined, but the final selection must take into account a variety of factors.

04 Suitable fixtures

Example

05 System performance

06 Precise control instruments

The calculation shows that a force of 6o0 kgf is sufficient for the test requirements. However, for long-termreliable operation,it's recommended to retain at least 30 % additional force capacity. Therefore,a vibration test system with a rated force of l0oo kgf,such as the DC-l0o0-15,is a morereasonable choice.

07
Measurement
sensors

Relation Formula

In case of sinusoidal vibration, the frequency f ( H z ) displacement \mathsf { D } _ { 0 ^ { - } \mathsf { p } } ( \mathsf {mm } ) ，velocityV ( \mathsf { m } / \mathsf { s } ) and acceleration a ( m / \mathsf { s } ^ { 2 } ) have the following relationship:

V = 2 π \uparrow 0 _ { \tt 0 * p } / 1000
\mathsf { a } = 2 π \mathsf { f V } = [ 2 π \mathsf { f } ] ^ { 2 } \mathsf { D } _ { 0 * \ p } I 1000

Selection Guides

B Vibrction Controller

Theselectionof avibration controller should be based on the test specification, applicable standards,and required functional capabilities. Clearly define the test type (sine,random,shock,etc.) and channel configuration.

To ensure system performance and test accuracy, also consider:

·Sensor type (IEPE or charge-type) · Number and location of control and response points ·Compatibility with signal conditioning and data acquisition modules

C Selection of Optional Accessories

Choosing therightacessories canenhance the performance of vibrationshaker,optimize the test process,and improve test efficiency.The basic optional accessories are:

The Basic Structure of the Electro-Dynamic Shaker

① Upper cover ⑦ Armature ② Magnetic body ring ⑧ Upper magnetic body cover ③ Trunnion ⑨ Field coil ④ Load support {10} Lower magnetic body cover ⑤ Lower guidance device ① Air duct cover ⑥ Air spring {12} Center magnetic pole

SYSTEMLAYOUT

Air-Cooled Electro-Dynamic Vibration Test System Layout (ForReference Only)

Yl Operation Conditions

·Ambient temperature: 5 ^ { \circ } \mathsf { C } C 3 5 ^ { \circ } C

·Relative humidity: 0\~90%RH (no condensation)

·Theequipmentisused inanenvironmentfreeofdust,corrosive media,strong vibrationsource,andinstrumentsor equipment that are sensitive to noise and vibration

·Toensurethenormaloperationof thesystem,water,electricityandairrequiredbytheselectedvibrationtestsystem must be provided at the test site

Water-Cooled Electro-Dynamic Vibration Test System Layout (For Reference Only)

目

Vibration Isolation & Foundation Requirements

Topreventtransmisionofvibrationto surounding structuresand sensitive equipment,electrodynamicshakersmustbe installed with effective isolation measures andadedicated foundation.Poorisolation may compromise test accuracy and pose risks to equipment and building integrity.

Foundation design should complywith standards such as:

·T/CECs ll29-2022-Technical Specifications for Vibration Shaker Foundations ·GB 50040-2020- Design Code for Foundations of Dynamic Machines

DIC Series Electro-Dynamic Vibration Test System

The DIC Series represents SST's latest generationof vibration testsystems,integratingadvanceddigitaland intelligent controltechnologies.Designed toaddress micro-voltage sensivity issues inhigh-precisionsensors,gyroscopes,and smart sensing devices,it ensures superior data accuracy and test stability.

Typical Applications

Highanti-interference performance

· Utilizes high signal-to-noise ratio (9odB) power modules ·Output noise as low as 2 \mathsf { m v } , ensuring excellent electromagnetic compatibility (EMC)

Ample power margin

·High-reliability power design supports up to 4 x peakpower
output
·Significantly enhances shock and random vibration test capabilities

90 [dB]

①

4 [times]

Ultra-Low noise design

·Advanced noise suppression ensures compatibility ·Suitable for high-sensitivity testing environments (e.g.,MEMS, gyroscopes)

Intelligentinterconnection
·Real-time monitoring
·Multi-interface communication and remote operation

Low [Noise]

品

N+ [lnterconnections]

DICSERIES

DIC Series Electro-Dynamic Vibration Test System Air-Cooled

DICSERIES

DIC Series Electro-Dynamic Vibration Test System Water-Cooled

DIL Series Large Displacement Electro-Dynamic Vibration Test System

The DILSeriesistailored for large-displacementvibration testingand comesequipped with thenext-generation PA ;eries poweramplifier,optimized forhighdynamic performance.

Hig eliatin tegting Lowstisedvignsuitablefor 品 Imtonitontgontroland

DIRSERIES

DIRSeries Inductive-Ring Electro-Dynamic Vibration Test System

The DIR Series adopts an inductive coupling drive principle,in which the drivecoilisfixed tothemagnetic housing andinduces current on the armature surface to generate vibration.This non-contact drive method enhances system durability and stability.

No physical connection between coil and armature,reducingwear and maintenance

Highstability under long-duration operation

Suitable for high-reliability testing scenarios

Induction ring drive,armature has high reliability

High g-value,vibration acceleration up to 200g

Multiple cooling methods

DC Series Electro-Dynamic Vibration Test System (Air-Cooled)

TheDCSeries isdesigned to simulate a widerangeof vibration conditions,ensuring product structuralintegrity 'unctional performance,and reliability under real-world vibration environments.

Air-cooled design forsimplified installation and maintenance

Stable performance for general-purpose vibration testing

0

Suitable formedium-force test applications

DC Series Electro-Dynamic Vibration Test System (Water-Cooled)

The DCSeries(Water-Cooled)isengineered forhigh-forceand heavy-load vibration testapplications.Itaccurately replicatesreal-worldvibrationenvironments,helping toidentifydesignweaknessesandimproveoverallproductquality and reliability.

High cooling efficiency, suitable for long-duration high-power tests

()

Supports large payloads and high acceleration requirements

目

Designed for demanding industrial environments

Typical Applications

Aerospacestructures andsubsystems

Automotivecomponents (e.g., battery packs,engine modules)

Rail transit equipment

HighRigidityArmature Structure

High-Efficiency Short-Circuit Ring Cooling Technology

High Strength and High Heat-Resistant Winding Structure

米合

Secondary Circulating Water Cooling System

Parallel Water Circuit Design Enhances Cooling Eficiency,Reduces External Circulation WaterTemp Requirements

DC Series Electro-Dynamic Vibration Test System (Air-Cooled)

DC Series Electro-Dynamic Vibration Test System (Water-Cooled)

DHSeries High Acceleration Electro-Dynamic Vibration Test System

The DHSeriesisdesigned tomeethigh-accelerationtestdemands,overcoming thelimitationofconventionalystems thatcannot exceed 50gunderload.Itensures accurate testing under extremeconditions,meetingadvancedreliability requirements.

DLSeriesLargeDisplacement Electro-Dynamic Vibration TestSystem

The DLSeriesisdesignedforlargedisplacementvibrationtests,includingrandom,sine,andshocktestingmdes.Itis widely used in industries requiring rigorous vibration simulations.

DLSSeries Large Displacement Electro-Dynamic Vibration Test System

DLS Series Large-displacement Electro-dynamic Vibration Test System isanew-generation solution developed to overcome the stroke limitations of conventionalvibration shakers and meet the growing demand for long-stroke vibration testing under extreme operating conditions.With a maximum displacement of 2 0 0 ~ \mathsf {mm } peak-to-peak and a top velocity of 3 ~ { m / s } , the system far exceeds conventional industry levels.It is capable of efficiently performing demanding testssuchaslarge-displacementrandomvibration,long-strokesinesweep,andhigh-energyshock,making itidealforapplications includingaerospace structuralverification,rail transitreliabilitytesting,andtransportation simulationof large-scaleequipment.TheDLSseries fullycomplies withthestringentrequirementsofhigh-enddomestic and international environmental test standards.

DTSeries Large Working Table Electro-Dynamic Vibration Test System

Conventional electro-dynamic shakers often facea trade-offbetween acceleration performance and payload size Jsing a head expander to test large specimens can reduce acceleration,compromising test effectiveness.

The DT Series is specificall designed to support large specimens while maintaining high acceleration at high frequencies.Itprovidesarobustsolutionfortestscenarios thatrequireboth largemounting areaand stringentvibration conditions.

四 Large working table design with optimized armature structure ⑥ preserved across wide frequency ranges High acceleration performance ⑤ Ideal for large-size, high-frequency vibration applications

DF Series High Frequency Electro-Dynamic Vibration TestSystem

TheDFSeriesisspecificalldesignedforhigh-frequencyvibrationtesting,withanoperating rangeupto40oo-8000 Hz It meets the stringent requirements of reliability and durability testing for precision components.

Wide frequency bandwidth,ideal Optimized for small, lightweight, ⑨ High accuracy and stability for high-frequency response testing high-precision specimens under extended test durations

The maximum working frequency can reach 8000Hz

The armature has a compact structure, which has light weight and strong rigidity

Low damping guide structure

DSSSERIES

DSSSeriesLargeDisplacement Electro-Dynamic Shock TestSystem

ihe Dss Seriesis engineered for high-precision shocktesting,capableof generatingawide varietyof standard and Jser-defined shock waveforms.

Large displacement capability Accurate waveform reproduction ① Suitable for both standard compliance forrealistic shock simulations across multiple profiles and custom verification tests

TechnicalParameter

Typical Applications

C

MAVSERIES

MAVSeriesMulti-axis Electro-DynamicVibration Test System

The MAVSeries supports multi-axis simultaneous vibration testing,enabling more realisticand eficientsimulationof complexoperational environments.

Simultaneous excitation in multiple directions (e.g., X/Y/z)

Closerrepresentationof real-worldvibrationconditions

Enhanced test efficiency and reduced test time

Ideal for complex,multi-directional loading profiles

山

·Static pressure and vibration integrated coupling 3 technology,the weight of moving parts for each axis is basically the same

Integrated design,multiple vibration shakers are 仓 installed on one base

Working Principle

MAVSERIES

MAVSeriesMulti-axisElectro-DynamicVibration Test System

C

MAVSERIES

MAVSeries6-DoFElectro-DynamicVibration Test System

The MAVSeries 6-DoF system couples multiple single-axis linearand angular excitations to simulatecomplex multidegree-of-freedom vibration environments.It providesacloser approximation to real-world dynamicconditions than traditional single-axis systems.

Simultaneous3 translational (X,Y,Z) and 3 rotational (Roll,Pitch,aw) motionexcitation

Highly realistic simulation of dynamic environments

Reduces testtimeand improves faultdiscoveryrate

Programmable test profiles for complex operational scenarios

Technical Parameter

Aerospace avionics and 命 Automotive hassis,tery 四 Rail transit Electronic device durability structural subsystems packs, and cockpit systems control systems and reliability testing

Al recommended to run the equipment atno more than 70 % ofits maximum capacity.If higher continuouscapacityis required,please contact our technical department in advance to prevent potential overload damage.

C

PASERIES

PASeriesPowerAmplifier

The PA Series isSST'slatestgenerationof inteligent,networked digitalPWMswitching poweramplifiers,specially designed for electro-dynamic vibration test systems.

Based on DSP/FPGA/ARM architecture, combined with advanced high-voltage switching components

Wide output range: 20-660 kVA, compatible with avariety of shaker systems

High reliability, low noise,and low temperature drift, ideal for magnetically sensitive test specimens

300 Vdc bus,100 Arms continuous,
400A peak via SA-20l0 power module

Supports digital acquisition,precise control, and stable long-term output

Capable of drivingup to 20 kW resistiveorinductiveloads

Smart Connectivity

Built-in programmable interface Supports Internet-based remote monitoring and control, enabling intelligent operation and maintenance

1. High Reliability

品

·Long-term stable operation ·Real-time digital control ·Electrical isolation design ·Parallel operation ready ·Thermal protection

2. Low Noise x))

·High CMRR precision input stage ·DC input filtering ·Optimized power bridge topology ·Advanced output filtering ·Ultra-low output noise

3. Networking品

·Multi-protocol communication support ·Real-time monitoring&control ·Remote diagnostics&firmwareupgrade ·Comprehensive data access

4.Control Characteristics

Programmable digital control and operation interface

·Digital storage of system alarm information ·High-definition touchscreen for real-time status display ·Programmable system limits,status,and fault information (optional)

Remote Monitoring

·Supports connection of power amplifier,shaker,and host PC via CAN bus and other interfaces ·Enables device interconnection and lab-wide networked management

Output Short-Circuit Protection

·Power PCB passes 1.6 kV dielectric withstand test (60s) ·FPGA-controlld rapid shutdown and fault display upon abnormal insulation or short circuit

C

DHESERIES

DHE Series Heat Exchanger

TheDHE series heat exchangerworks byusingatwo-stage circulating coling system.The external andinternal cooling waterexchange heatintheheatexchanger,therebycooling the threemain heating componentsof theelectro-dynamic shaker: armature,field coil,and short-circuit ring.

HPS Series High Pressure Oil Source

HPS series high pressureoil source is used toprovide therequired highpressureconstantflow lubricatingoil forthe horizontal slip table T-type bearing.

SENSORSANDSMALLEXCITERS

Control System

LASeriesPowerAmplifier

PiezoelectricAcceleration Sensors

Basedonthepiezoelectric efect,thesesensorsarecompact,lightweight,andstructurallsimple.With nomovingparts and passivesensingelements,theyoferhighstifess,widedynamicrange,broad frequencyresponse,andreliable performance.They are the most widely used sensors in shock and vibration measurement today.

High shock accelerationsensor (Up to 100000g)

11IA/112A series
211A/212A series

Uniaxial accelerationsensor (Range:10g-500g)

Low-frequency,highly sensitive uniaxialaccelerationsensor (Range:0.lg-50g)

Charge output /IEPE output

121A series (top)/122A (side)
221A series (top)/222A (side)

Charge output /IEPE output

13lA series (top)/132A (side)
231A series (top)/232A (side)

Charge output /IEPE output

Miniature uniaxial acceleration sensor (Weight: { \mathsf { 5 } } { \mathsf { - } } 7 { \mathsf { 9 } } )

Triaxial
acceleration sensor
(weight:7g)

Mini triaxial acceleration sensor (weight:9g)

161Aseries
261A series
145A series
245A series

141Aseries

Charge output /IEPE output

IEPE output /PE output

IEPE output