Mechatronics an der RWTH Aachen | Karteikarten & Zusammenfassungen

# Lernmaterialien für Mechatronics an der RWTH Aachen

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The three most important filter types are:

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1. Butterworth  Flat amplitude and frequency response in pass band  Response drops steeply  Overshoots for a step response (Increases as filter order increases)

2. Tschebyscheff  Steeply dropping frequency response  Ripple in the passband

3, Bessel (Thomson-Filter)  Optimal behavior in frequency response (largely flat)  Low slope  Constant group delay in passband

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Basic types of OP Amp?

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1. Comparator
2. Impedance converter
3. Inverting amplifier
4. Non-inverting amplifier
5. Differentiator
6. Integrator
7. Difference amplifier/Subtractor
8. Instrumentation amplifier

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Two types of filters based on their realisation?

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1. Passive filters (only passive components: L, R, C)

2. Active filters (with OP-AMPs, “Analog Computer”)

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What is n-doping?

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If, for example, a phosphorus atom (P, atomic number 15) with five valence electrons is brought into the crystal, only four of these electrons are needed for anchoring in the crystal structure. An electron remains, which can be loosened comparatively easily and is thus available as a mobile charge in the material.

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Three common sensor types for DC current measurement:

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1. Hall sensor: Magnetic field of the current to be measured is directed by an iron core into a hall sensor plate, where a voltage in induced which is proportional to the measurement current

2. Shunt = Resistor for current measurement

3. Magneto-resistive current sensors

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What is sensor measuring range?

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range of input values, that can be mapped into a valid range of output values

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What is sensor measuring range?

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should be greater than the range of the signal to be captured

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What is Mechatronics?

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Mechatronics is the synergetic integration of Mechanical Engineering with Electronics and intelligent computer-based control in the development and manufacturing of products

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What is p doping?

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elements with three valence electrons are used for doping, e. g. aluminum (Al, atomic number 13), an electron is missing to complete the crystal structure.

The missing electron can be interpreted in the electrical view as a virtual positive charge

This is called p-doping. The p refers to the positive free charge.

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Stages for the sensor signal?

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1. Input signal-
2. Conversion-
3. Converter-
4. Evaluation electronics-
6. micro processor-
7. output signal

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What is sensor resolution?

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smallest difference between two signals which shall be depicted by the sensor

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Three common sensors for DC current measurement?

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Hall sensor;

magneto-resistive current sensors

Shunts (low value resistors)

Lösung ausblenden
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Q:

The three most important filter types are:

A:

1. Butterworth  Flat amplitude and frequency response in pass band  Response drops steeply  Overshoots for a step response (Increases as filter order increases)

2. Tschebyscheff  Steeply dropping frequency response  Ripple in the passband

3, Bessel (Thomson-Filter)  Optimal behavior in frequency response (largely flat)  Low slope  Constant group delay in passband

Q:

Basic types of OP Amp?

A:

1. Comparator
2. Impedance converter
3. Inverting amplifier
4. Non-inverting amplifier
5. Differentiator
6. Integrator
7. Difference amplifier/Subtractor
8. Instrumentation amplifier

Q:

Two types of filters based on their realisation?

A:

1. Passive filters (only passive components: L, R, C)

2. Active filters (with OP-AMPs, “Analog Computer”)

Q:

What is n-doping?

A:

If, for example, a phosphorus atom (P, atomic number 15) with five valence electrons is brought into the crystal, only four of these electrons are needed for anchoring in the crystal structure. An electron remains, which can be loosened comparatively easily and is thus available as a mobile charge in the material.

Q:

Three common sensor types for DC current measurement:

A:

1. Hall sensor: Magnetic field of the current to be measured is directed by an iron core into a hall sensor plate, where a voltage in induced which is proportional to the measurement current

2. Shunt = Resistor for current measurement

3. Magneto-resistive current sensors

Q:

What is sensor measuring range?

A:

range of input values, that can be mapped into a valid range of output values

Q:

What is sensor measuring range?

A:

should be greater than the range of the signal to be captured

Q:

What is Mechatronics?

A:

Mechatronics is the synergetic integration of Mechanical Engineering with Electronics and intelligent computer-based control in the development and manufacturing of products

Q:

What is p doping?

A:

elements with three valence electrons are used for doping, e. g. aluminum (Al, atomic number 13), an electron is missing to complete the crystal structure.

The missing electron can be interpreted in the electrical view as a virtual positive charge

This is called p-doping. The p refers to the positive free charge.

Q:

Stages for the sensor signal?

A:

1. Input signal-
2. Conversion-
3. Converter-
4. Evaluation electronics-
6. micro processor-
7. output signal

Q:

What is sensor resolution?

A:

smallest difference between two signals which shall be depicted by the sensor

Q:

Three common sensors for DC current measurement?

A:

Hall sensor;

magneto-resistive current sensors

Shunts (low value resistors)

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