DL Europa mission is to provide the best solutions for all our customers. We know the importance of the sustainable business and the quality of products.

1. A NEW ECO POWER AMPLIFIER GENERATION FOR VIBRATION TEST SYSTEM
NEW VISION SUSTANIBILITY
AUTOMATIC ADJUSTMENT EXCITATION VOLTAGE
NOISE REDUCING AND ENERGY SAVING
REAL - TIME MONITORING OF TEST STATUS
ECO POWER AMPLIFIER

2. ENERGY-SAVING POWER AMPLIFIER
Most electro-dynamic vibration testing shakers on the current market are not equipped with voltage adjustment
design for filed coil. The field coil has a fixed voltage output after the shaker is powered on. Actually the high
magnetic field is not required when performing low force tests, the energy is wasted and the service life of
the field coil is shortened thereof. On the other hand, the cooling blower is not designed with a velocity adjustment
function. The blower runs at full power when powered on, which results in energy waste and noise pollution.
The system collects the armature output voltage, armature output
current, and field coil voltage and field coil current periodically,
the armature output power and field coil consumption power will
be calculated based on collected data, and the total power will be stored
into PLC after addition of two quantities.
Reduce the field coil voltage, recalculate the total power of armature
output power and field coil consumption power, compare the new
data with that in step 1 and adjust the field coil voltage again according
to the comparison result. The final field coil voltage will be decided
where the voltage corresponding to the lowest total power according
to the principle of the least square method. The energy saving of
the whole system can be realized thereof.
Field coil adjustment:

3. FEATURES OF ENERGY - SAVING POWER AMPLIFIER
1
No acceleration sensor feedback is required, and the ultimate goal of the control strategy is to achieve
the minimum total power of the system under current test conditions.
2
The adjustment of the field coil voltage will not depend on the controller, but completely relies on the
built-in PLC to complete the optimal adjustment of field coil voltage.
3
Regarding the part of the cooling blower, the operation of the blower will be decided by the state of power
amplifier. The armature and field coil temperature will be continuously collected after the power amplifier
is powered on and the fan velocity is dynamically adjusted during the test. After finishing the test, adjust the
fan velocity again based on the actual temperature of the armature and field coil to dissipate the heat of
the shaker. On the other hand, the blower power consumption and noise are decreased.

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