Ghulam AbbasEngineering & designIdeas engineered. Solutions delivered.

Simulation & Control

Report-based engineering study

LabVIEW Motor Control Demonstrator

A LabVIEW and NI myDAQ motor-control prototype linking signal conditioning, PWM output and a visual front panel.

LabVIEWNI myDAQDAQ AssistantBreadboard instrumentation
A LabVIEW loop contains DAQ Assistant nodes, a formula block and waveform-generation wiring. Enlarge image
Original LabVIEW diagram links acquisition, formula processing, signal generation and output.
LabVIEW front panel shows stable intermediate values and a narrow pulsed waveform. Enlarge image
Recorded baseline front panel, retaining the original voltage, duty-cycle and waveform displays.
Original front-panel capture contains changing voltage traces and a wider pulsed output pattern. Enlarge image
Reported response capture shows changing traces and a different output duty pattern; the optical chain was not fully validated.
Wired breadboard beside a fan motor and a labeled NI myDAQ data-acquisition device. Enlarge image
Bench photograph of the breadboard, small DC motor and NI myDAQ interface.
LabVIEW Motor Control Demonstrator — architecture diagram Enlarge image
Explanatory architecture for this project; source software evidence is shown separately.

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Project brief

This project develops a laboratory motor-control demonstrator around LabVIEW, NI myDAQ and a breadboard circuit. Its intended application is an optically controlled acceleration input: a light-sensitive signal is conditioned, translated into a duty-cycle command and used to operate a small DC motor. The report provides a LabVIEW block diagram with DAQ Assistant nodes, a formula stage, a simulated signal and a continuous execution loop. Front-panel captures show the input-related voltage, its inverted form, intermediate duty-cycle values and an output waveform, while a photograph documents the breadboard, motor and myDAQ hardware. The component discussion covers amplification with a 741 device, transistor switching, filtering and an infrared speed-sensing concept. Taken together, these artifacts show how the project connects a graphical control program to a physical bench setup and makes internal signals visible to the operator. The report describes tests with changing input conditions and records differing front-panel traces, but does not provide a reproducible numerical accuracy or response-time study. Its conclusion also states that the intended photodiode was unavailable. That limitation means the evidence supports a software and hardware control demonstrator, while a fully validated optical sensing chain and automotive deployment remain outside the demonstrated result. The case is strongest as an example of instrumentation, interface design and prototype integration.

The engineering challenge

Translate a sensor-related input into a motor command while exposing the acquisition, conditioning and duty-cycle stages through a clear operator interface.

Engineering approach

  1. Define an optical-input motor-control concept and select signal-conditioning and switching components.
  2. Build a continuously executing LabVIEW diagram around NI myDAQ acquisition and output.
  3. Transform the acquired signal into a duty-cycle command and generate the output waveform.
  4. Display intermediate voltages, duty-cycle values and waveforms on the LabVIEW front panel.
  5. Assemble the breadboard and DC motor setup, document the observed traces and identify the missing photodiode validation.

Results & observations

NI myDAQHardware interface

The block diagram and bench photograph show the interface connecting the LabVIEW program to the prototype.

PWM waveformControl output

Front-panel plots expose the generated pulsed output and intermediate duty-cycle values.

2 front-panel statesEvidence recorded

The report includes separate baseline and changing-input captures; no calibrated response-time metric is supplied.

Photodiode unavailableValidation limit

The source conclusion explicitly says the intended photodiode was unavailable, limiting claims about the completed optical chain.

Features & capabilities

  • DAQ acquisition and output
  • Signal conditioning
  • Duty-cycle calculation
  • Graphical operator panel
  • Breadboard motor prototype
  • Visible intermediate signals

Software & engineering tools

LabVIEW, NI myDAQ, DAQ Assistant, Breadboard instrumentation

More engineering to explore.

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