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Thomas Dehaeze 2020-10-22 16:00:37 +02:00
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content/zettels/charge_amplifiers.md
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@ -4,10 +4,6 @@ author = ["Thomas Dehaeze"]
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Backlinks:
- [Signal Conditioner]({{< relref "signal_conditioner" >}})
Tags
: [Electronics]({{< relref "electronics" >}})
@ -21,19 +17,19 @@ This can be typically used to interface with piezoelectric sensors.
## Basic Circuit {#basic-circuit}
Two basic circuits of charge amplifiers are shown in Figure [1](#org9ffcf40) (taken from ([Fleming 2010](#orgaceef58))) and Figure [2](#org37bd87f) (taken from ([Schmidt, Schitter, and Rankers 2014](#org683b96e)))
Two basic circuits of charge amplifiers are shown in Figure [1](#org3aa62a6) (taken from ([Fleming 2010](#orgd8b7cb4))) and Figure [2](#org18afeb8) (taken from ([Schmidt, Schitter, and Rankers 2014](#orga9d9a6b)))
<a id="org9ffcf40"></a>
<a id="org3aa62a6"></a>
{{< figure src="/ox-hugo/charge_amplifier_circuit.png" caption="Figure 1: Electrical model of a piezoelectric force sensor is shown in gray. The op-amp charge amplifier is shown on the right. The output voltage \\(V\_s\\) equal to \\(-q/C\_s\\)" >}}
<a id="org37bd87f"></a>
<a id="org18afeb8"></a>
{{< figure src="/ox-hugo/charge_amplifier_circuit_bis.png" caption="Figure 2: A piezoelectric accelerometer with a charge amplifier as signal conditioning element" >}}
The input impedance of the charge amplifier is very small (unlike when using a voltage amplifier).
The gain of the charge amplified (Figure [1](#org9ffcf40)) is equal to:
The gain of the charge amplified (Figure [1](#org3aa62a6)) is equal to:
\\[ \frac{V\_s}{q} = \frac{-1}{C\_s} \\]
@ -53,6 +49,6 @@ The gain of the charge amplified (Figure [1](#org9ffcf40)) is equal to:
## Bibliography {#bibliography}
<a id="orgaceef58"></a>Fleming, A.J. 2010. “Nanopositioning System with Force Feedback for High-Performance Tracking and Vibration Control.” _IEEE/ASME Transactions on Mechatronics_ 15 (3):433–47. <https://doi.org/10.1109/tmech.2009.2028422>.
<a id="orgd8b7cb4"></a>Fleming, A.J. 2010. “Nanopositioning System with Force Feedback for High-Performance Tracking and Vibration Control.” _IEEE/ASME Transactions on Mechatronics_ 15 (3):433–47. <https://doi.org/10.1109/tmech.2009.2028422>.
<a id="org683b96e"></a>Schmidt, R Munnig, Georg Schitter, and Adrian Rankers. 2014. _The Design of High Performance Mechatronics - 2nd Revised Edition_. Ios Press.
<a id="orga9d9a6b"></a>Schmidt, R Munnig, Georg Schitter, and Adrian Rankers. 2014. _The Design of High Performance Mechatronics - 2nd Revised Edition_. Ios Press.

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content/zettels/simulink.md
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@ -4,10 +4,6 @@ author = ["Thomas Dehaeze"]
draft = false
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Backlinks:
- [Matlab]({{< relref "matlab" >}})
Tags
: [Matlab]({{< relref "matlab" >}})