eco shaker imv - english
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TRANSCRIPT
Eco friendly vibration test systems
reduce the impact on the environment.
Energy Saving Vibration Test Systems
Energy Saving Vibration Test Systems 1
Contents
1. Necessity
2. Aim
3. Brief Summary of ED Vibration Test System
System construction
Vibration generator mechanism
4. Energy Saving Modification of ED Vibration Test System
Conventional operation method
Manual approach to save energy tried in the past
How to achieve an optimal energy saving
5. ECO-Shaker Technologies
Energy saving vibration test system: ECO-Shaker
System construction
System operation flow
6. ECO-Shaker Performances
Energy saving
Blower acoustic noise reduction
Reduction of electricity charge and CO2 emission
7. Conclusion
Energy Saving Vibration Test Systems 2
1. Necessity
● What is Vibration Test?
Vibration testing examines the influences of mechanical vibration to functionality,
durability, and reliability on a component used within a certain environment.
Today, it is considered as one of the essential test methods in development and
manufacturing processes and has become a technology to sustain the reliability of
the modern social systems.
Objects of the vibration tests are exemplified as below:
Category Examples
Parts Electronic parts, Mechanical parts
Assembly parts Printed-circuit board, Mechanical assembly
Final product / unit Laptop computer, Engine, Satellite, Airplane wings
Packed product Packed cargo for transportation
Vehicle Automobile (Ride-comfort, Durability etc.)
Structure House, Building, Bridge (Earthquake protection)
Energy Saving Vibration Test Systems 3
2. Aim
Almost all of the vibration test equipment are driven by electricity.
Electrodynamic (ED) vibration test system, which is IMV’s major product, is basing
on the operation principle that converts electricity directly to mechanical vibration
and consumes electricity considerably.
Consequently, when energy saving modification of this system is successfully done,
following benefits are expectable:
Reduction of Environmental Impact
Reduction of Testing Cost
Energy Saving Vibration Test Systems 4
3. Brief Summary of ED Vibration Test System
System construction
Energy Saving Vibration Test Systems 5
Vibration generator mechanism
3. Brief Summary of ED Vibration Test System
Energy Saving Vibration Test Systems 6
4. Energy Saving Modification of ED Vibration Test System
Conventional operation method
Energy Saving Vibration Test Systems 7
Blower power Pb : Fixed at the rating power
Field power Pf : Fixed at the rating power
Power loss in the conventional operation method
Drive power Pd : Varies from second to second according to the required excitation force
4. Energy Saving Modification of ED Vibration Test System
Energy Saving Vibration Test Systems 8
Method
When it is known that the required force is small, reduce the field current and the blower speed prior to the test start.(Setting needs to be switched-over by the operator.)
Power loss by the conventional operation
This amount is possible to be saved.
Manual approach to save energy tried in the past
4. Energy Saving Modification of ED Vibration Test System
Energy Saving Vibration Test Systems 9
Problem 1: Test might be aborted suddenly.
If an excitation force larger than the estimate prior to the test start is required, the system
will stop for safety and the test will be aborted.
Problems
Problem 2: Insufficient saving is only possible.
To avoid the risk of sudden abort of the test, to take enough margin for operating
condition is necessary. Then, only small energy saving efficiency would be expectable.
Manual approach to save energy tried in the past
4. Energy Saving Modification of ED Vibration Test System
Energy Saving Vibration Test Systems 10
As seen in the figure, there exists an optimal setting of the field current at which the total power loss (Pf+Pd) become minimum.
1) Optimal setting of the field current
Power losses in the two coils are calculated and the total power loss is examined.
How to achieve an optimal energy saving
4. Energy Saving Modification of ED Vibration Test System
Energy Saving Vibration Test Systems 11
2) Optimal setting of the blower speed
The blower speed should be possible to be adjusted to cool down both the armature coil and the field coil appropriately:
→ Too fast, too small saving !
→ Too slow, the coils might be burnt!
Temperature characteristics of the drive coil and that of the field coil are different.
Temperature characteristics are different over the vibration generator models.
Not only difficult to handle, but also necessary to be treated one by one for each generator model.
Problems that need to be overcome
4. Energy Saving Modification of ED Vibration Test System
Energy Saving Vibration Test Systems 12
3) Readiness to any test conditions
Excitation level can be varied according to the elapsed time and/or to the frequency through a test.
The energy-saving control should be ready to such change of the required excitation force caused by the test conditions
Example
How to control the field current in a test in which the excitation force requirement varies, especially at the circled parts ○ in the figure?
4. Energy Saving Modification of ED Vibration Test System
Energy Saving Vibration Test Systems 13
5. エコシェーカーの概要と仕組み
ECO-Shaker has solved such problems mentioned above, and has realized a full automatic energy saving operation all the while through the given test execution.
Energy saving vibration test system: ECO-Shaker
Observing the drive current and the cooling air temperature, ECO-Shaker
determines the optimal field current & blower speed setting and operates
the full automatic energy saved vibration testing.
Communicating with the vibration controller K2, various types of
vibration tests are possible to be operated in energy saving manner.
Features of the ECO-Shaker
5. ECO-Shaker Technologies
Energy Saving Vibration Test Systems 14
System construction
5. ECO-Shaker Technologies
Energy Saving Vibration Test Systems 15
System operation flow
System Start
Excitation Start
Drive current (Id0) and cooling air
temperature (Tin) are measured.
Presently required force F1 is calculated
Optimal operating condition to output the
required F1 is searched and determined.
Optimal operating condition is set.
: System boot up operation
: Test is started by the operation of the Vibration Controller
: By the formula F=BLId=βIdβ is measured for each vibrator
model
: Optimal field current and optimal blower speed are set and realized by the variable power supplies for each.
: Start by the Operator
: Automatic control by the system
Rating field current is set (If0),
Blower speed is optimally controlled
5. ECO-Shaker Technologies
Energy Saving Vibration Test Systems 16
Energy saving
Actual performance of the energy saving by the data taken with a standard system EM2601 (Rating force ：54 kN）
6. ECO-Shaker Performances
Energy Saving Vibration Test Systems 17
Blower acoustic noise reduction
Blower speed is slowed for energy saving
Then, the acoustic noise by the blower is also reduced at the same time. Work environment when the excitation force is small can be drastically improved.
6. ECO-Shaker Performances
Energy Saving Vibration Test Systems 18
Reduction of electricity charge and CO2 emission
Note:The figures are showing a simulation result under the assumption of below:・Excitation Force: 25% of the rating
・Operating Ratio: 50%
・Electricity Charge: Yen16 / kWh
・CO2 Emission Rate: 0.000555 ton / kWh
6. ECO-Shaker Performances
Energy Saving Vibration Test Systems 19
7. Conclusion
ECO-Shaker is introduced
Patents granted for the ECO-Shaker technologies:
Electricity cost is reduced by energy saving
Very good reputations by the customers who are already using the ECO-Shaker
Blower noise is reduced
Work environment is improved
Energy saving effect is always visible and recorded.
Blower speed is slowed by the energy saving operation
Japan Patent No.4231095, No.4263229
No.4812857, No.4812858
U.S.A. US 8,069,728 B2
Europe
China
EP08075809.7 (pending)
200810174953.4 (pending)