Page 41 - Shimadzu Dynamic and Fatigue Testing Systems

Electromagnetic Force Dynamic and Fatigue Testing System

Shimadzu Servopulser series electromagnetic force dynamic and fatigue testing systems feature electromagnetic actuators with extremely high
frequency response. In combination with a closed-loop control system, they allow testing in a clean environment at high speeds or with stroke
lengths ranging from micro to long. EHF Series Electric Hydraulic Dynamic and Fatigue Testing System

With No Hydraulic Oil Required,
Maintenance Is Easy

Generates no environmentally unfriendly waste oil.
Requires no hydraulic oil, lters, or other consumables.

Eco-Friendly
Energy Ef ciency

The eco-friendly operation uses electricity ef ciently based on the test force. EMT/NJ-SERVO/MMT Series Electric Fatigue and Endurance Test System
Power consumption is minimized to only what is required.
Since the system is clean, it will not contaminate the installation site.

High-Speed High-Accuracy Testing

Performs tests with strokes ranging from micro to long at high speeds and high
frequencies. This allows dynamic testing with high accuracy.

Low Noise Space Saving

Electromagnetic actuators are quieter than hydraulic actuators, which require a
hydraulic power supply unit. The low noise provides more freedom in selecting
an installation site. Servo Controller 4830 Controller for Dynamic and Fatigue Testing Systems
The only things required are the main testing machine unit and controller.
Requires less space than electric-hydraulic dynamic testing machines.

Electromagnetic Actuators F

The section that generates test forces consists of a permanent magnet and a force
coil, where the magnet is xed and the coil moves up and down. Applying an
N S N
electrical current to the coil generates an electromagnetic force F that is
proportional to the coil current. This relationship is expressed by the following
formula.
F=2 nBl r : Coil radius
n : Number of coil turns
B : Magnetic ux density of magnet Various Dynamic Testing Systems
l : Coil current

The micro test load is controlled with high accuracy by generating the
electromagnetic force through the control of coil current I using the closed loop
system.

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