Week 10

Title: The charger controller circuit for this project.

Objective:

1. To transmit the power from piezo-electric efficiently.

Method:

1. Research based on type of project.

Result:

PDQ High Speed Charge Drive

The PDQ amplifiers are the first commercially available charge drives for piezoelectric actuators. A charge drive is similar to a voltage amplifier except that piezoelectric hysteresis can be reduced to less than 1%.

In many applications, a charge drive can immediately replace a voltage amplifier when improved dynamic linearity is required. This can reduce or eliminate the need for feedback or feedforward control of hysteresis.

PiezoDrive charge drives are designed for both high-performance and ease-of-use. Compared to a standard high-voltage amplifier, there is only one additional control, the DC-gain, which sets the voltage-gain at low-frequencies.

The PDQ charge drives have the same exceptional bandwidth and output current as the PDX voltage amplifiers. This includes Dynamic Current Control which dramatically improves the maximum output current and allows the reproduction of larger amplitude waveforms with higher frequency.

In addition to the fast response, the PDQ drives also include: comprehensive overload protection; external shutdown; voltage, charge and current monitor outputs; and front-panel bias-voltage adjustment.

Model	PDQ150b	PDQ200b
Voltage	-30V to 150V*	-30V to 200V*
Peak Current	2A	1.5A
Overload Time	100ms	100ms
RMS Current	1.6A	1.1A
Power Bandwidth	9.5 kHz	7.2 kHz
Signal Bandwidth	Greater than 80 kHz (1uF Load)
Charge Gain	2.2, 6.2, 22, 62, 220, or custom uC/V
Voltage Gain	20 - 66 V/V
Offset	From 0V to Full-Range
Input	Differential, Zin = 22 kOhm
Signal Connectors	BNC input, BNC Monitor Outputs,
Output Connectors	4mm Plugs and 2-Way LEMO 0B
Overload Protection	Thermal, current and voltage
Noise	3mV RMS
Environment	0 - 40 C (32-104 F)
Enclosure	Desktop, rack compatible
Dimensions	212.6 x 304.8 x 132.6 mm (w x d x h)
Power Supply	115V or 230V AC (selectable)

Conclusion:
The PDQ drives are housed in a desktop enclosure that can be bolted together in a side-by-side configuration. Mounting in a standard 19-inch rack is also possible with the addition of rack-mount handles.