LVDT/RVDT Simulation Package

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The LVDT/RVDT Simulation Package (CP-LVDT-RVDT-SIM) is an FPGA-based solution designed for accurate simulation of LVDT, RVDT, and resolver signals in real-time environments. Built on a customized FPGA platform, the card is optimized for Hardware-in-the-Loop (HIL) testing, enabling engineers to simulate position sensor behavior with high fidelity.

The package provides eight 3/4-wire LVDT/RVDT simulation channels with transformer coupling, supporting applications that require precise emulation of electromechanical position sensors. Integration with Concurrent Real-Time’s SIMulation Workbench (SimWB) allows for development and execution of real-time simulation models within a unified framework.

Multi-Channel LVDT/RVDT Simulation

The card supports eight independent LVDT/RVDT simulation channels, each capable of generating realistic sensor signals for test and validation environments. Transformer-coupled outputs provide accurate signal characteristics for interfacing with external systems.

Configurable Signal Characteristics

The simulation package includes features for adjusting signal behavior to match application requirements, including:

• Programmable transformation ratio
• Ratiometric support
• Differential input/output up to ±20V
• 10k ohm impedance

These capabilities allow the system to replicate a wide range of LVDT, RVDT, and resolver signal conditions.

Integrated Signal Conditioning

The package includes an external 8-channel transformer coupling module with DIN mount and interface cabling. This enables proper signal conditioning and simplifies integration into test setups requiring transformer-based sensor simulation.

Deterministic FPGA-Based Performance

Built on an FPGA platform, the card provides deterministic signal generation suitable for real-time simulation environments. The architecture supports consistent timing behavior required for closed-loop HIL systems.

Frequency Response and Accuracy

The system supports a frequency response of ±2.0 dB from 300 Hz to 100 kHz (1 kHz reference), enabling accurate simulation across a range of operating conditions typical of LVDT/RVDT applications.

Software Integration

The LVDT/RVDT Simulation Package is designed to work with:

• SIMulation Workbench (SimWB) for model development and execution
• RedHawk Linux drivers for FPGA-based I/O support

The package includes FPGA Workbench licenses for LVDT/RVDT transmit functionality, enabling configuration and control within the broader Concurrent Real-Time ecosystem.

System Integration and Form Factor

The card is implemented as a PCIe x4 full-length, full-height card, designed for integration into iHawk systems. It supports standard power and environmental operating ranges suitable for lab and test environments.

Applications

This package is designed for systems requiring accurate simulation of position sensors, including:

• Hardware-in-the-Loop (HIL) testing
• Avionics and aerospace system validation
• Control system development and verification
• Resolver and LVDT/RVDT signal emulation