Quarc Library Simulink -

Review: QUARC Library for Simulink

Overall Verdict:
An excellent, high-performance real-time extension for Simulink—essential for anyone using Quanser hardware (e.g., QUBE, IP02, Aero) but too specialized and costly for general-purpose real-time tasks.

Conclusion: Why QUARC Remains a Leader

The QUARC library for Simulink is not just a collection of I/O blocks—it is a complete real-time ecosystem. By enabling engineers to stay within the familiar Simulink environment while interacting with physical hardware, QUARC reduces development time from days to minutes. Its robust handling of real-time synchronization, versatile hardware support, and deep integration with Quanser’s world-class plants make it the go-to choice for control system education and research. quarc library simulink

The Quarc library is a powerful tool for designing, simulating, and deploying advanced control systems using Simulink. With its range of blocks and tools, Quarc enables users to create complex control systems quickly and easily. The library's integration with Simulink and Quanser hardware makes it an ideal choice for control systems development. Whether you're working on control systems, robotics, aerospace, or industrial automation applications, the Quarc library is definitely worth considering. Review: QUARC Library for Simulink Overall Verdict: An

Best Practices

  • Use fixed-step solvers with step size equal to the controller sample period.
  • Minimize host-target communication during time-critical loops; reserve External Mode for tuning.
  • Use hardware abstraction blocks instead of custom drivers for portability.
  • Validate algorithms in Simulink normal mode with simulated I/O before hardware deployment.
  • Profile CPU load and set task priorities to ensure deterministic behavior.
  • Log sufficient signals at appropriate rates; downsample if necessary to conserve bandwidth.

Step 6: Run the Model

  • Click the Monitor & Tune button (not the normal Run button). QUARC will compile the model (C code generation + linking to Quanser drivers) and begin real-time execution.
  • Adjust the PID gains while the motor is running to see immediate effects on position tracking.

Excellent Hardware Support
Native drivers for Quanser plants, sensors (encoders, IMUs), actuators, and data acquisition cards (e.g., QPIDe, Q8-USB). Also supports third-party boards via generic I/O blocks. Use fixed-step solvers with step size equal to

Part 1: What is the QUARC Library?

1.1 Beyond Traditional Simulink

Standard Simulink excels at "offline" simulation. You provide inputs, run the model over a time span, and analyze outputs. QUARC enhances this by introducing real-time execution. When you use QUARC blocks, you can "Build" and "Run" your Simulink diagram directly on a target machine (Windows or Linux) with strict timing constraints (e.g., a 1 kHz control loop).

HIL Initialize: The "master" block. Drag this from QUARC Targets > Data Acquisition > Generic > Configuration. Double-click it to select your specific Quanser board (e.g., Q8-USB).

  • Download the QUARC trial from Quanser’s website.
  • Explore the built-in demos (type quarc_demos in MATLAB).
  • Try the "Quanser Rapid Control Prototyping (RCP)" tutorials to get your first motor spinning in under 30 minutes.