4
E51.B3S Series Piezo Controller User Manual
4.Power Calculation
● Average output（Sine wave operation mode）
Pa ≈ Upp • Us • f• Cpiezo
Pa=Average output[W]
Upp=Peak and peak drive voltage [V]
Us=Drive voltage[V]（（Vs+）-（Vs-））
Cpiezo=Piezo actuator capacitance[F]
f=Operating frequency of the sine wave[Hz]
3.Driving Principle
Analog input
Control input
Open
loop
Servo
Sensor
servo
control
Sensor
output
Sensor signal
input
Power
amplifier
High voltage
output
20
80
60
40
140
120
100
0
10
1000
100
Frequency vs Voltage
Frequency（Hz）
0.1μf
0.3μf
1μf
1.8μf
3.6μf
7.2μf
14μf
25μf
Output
v
oltage
（V）
