Accurion Duo Series Heavy-Duty Active Vibration Isolation Module

Overview

The Accurion Duo Series Heavy-Duty Active Vibration Isolation Module is an engineered subsystem designed to deliver high-fidelity, real-time vibration mitigation for large-format optical and metrological instrumentation operating in demanding laboratory or industrial settings. Unlike passive isolation solutions—such as pneumatic or elastomeric supports—the Duo Series employs a closed-loop, six-degree-of-freedom (6-DOF) active control architecture grounded in piezoelectric sensing and electromagnetic actuation. It continuously monitors ambient mechanical disturbances across vertical and horizontal axes using ultra-sensitive piezoelectric accelerometers, processes signals via a low-latency digital control unit, and generates precisely phase-matched counter-forces through integrated voice-coil actuators. This enables broadband suppression from 0.6 Hz up to 200 Hz—spanning critical building-borne vibrations (5–30 Hz vertical, 0.5–10 Hz horizontal), acoustic excitation (>20 Hz), and machinery-induced noise (10–500 Hz). The system achieves sub-second stabilization (<0.3 s), eliminating the prolonged settling typical of passive platforms (30–60 s), and maintains positional stability at <1 nm RMS drift under 1 Hz excitation—critical for interferometric imaging, scanning probe microscopy, and nanoscale optical profilometry.

Key Features

• 6-DOF real-time active compensation across translational (X, Y, Z) and rotational (pitch, yaw, roll) axes
• Load capacity of 0–400 kg per module; scalable via parallel configuration for multi-ton systems
• Compact footprint (Duo 73: 730 × 210 × 1250 mm) with integrated mounting interfaces for seamless integration into optical tables and custom frames
• No compressed air dependency—operates on standard 100–240 VAC, 50/60 Hz supply
• Bandwidth extension down to 0.6 Hz ensures effective suppression of sub-harmonic structural resonances
• High intrinsic stiffness (~20–30× greater than equivalent passive isolators at 1 Hz), minimizing low-frequency drift during long-duration measurements
• Front-panel push-button interface with status LED indicators; no external PC required for basic operation
• EMC-compliant design meeting IEC 61326-1 for laboratory electromagnetic environments

Sample Compatibility & Compliance

The Duo Series is validated for integration with high-resolution optical instruments requiring micron- to sub-nanometer positional fidelity—including but not limited to imaging ellipsometers (e.g., Accurion i4 Large), 3D optical profilers, laser interferometers, nanoimprint lithography stages, and synchrotron beamline end-stations. Its mechanical interface complies with ISO 20482 (optical table mounting standards) and supports M6/M8 threaded inserts per DIN 933/931. The module’s control electronics conform to IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emission) specifications. While not certified to FDA 21 CFR Part 11, its deterministic response behavior and audit-ready operational logs support GLP/GMP-aligned validation protocols where vibration control is a critical process parameter.

Software & Data Management

The Duo Series operates autonomously via embedded firmware; optional USB or Ethernet connectivity enables remote monitoring and diagnostics using Accurion’s Vibration Control Suite (VCS) software. VCS provides real-time FFT spectrum visualization, time-domain waveform capture, bandwidth tuning presets, and event-triggered logging—exportable in CSV and HDF5 formats for traceability. All control parameters are stored in non-volatile memory with write-protection to ensure repeatability across power cycles. Audit trails record timestamped configuration changes, sensor health status, and actuator duty cycle—supporting ISO/IEC 17025 documentation requirements for calibration laboratories.

Applications

• Stabilization of large-aperture interferometers and shearography systems in vibration-prone facilities
• Isolation of 3D surface metrology tools (e.g., white-light interferometers, confocal microscopes) during high-magnification topographic mapping
• Support for in-line optical inspection stations in semiconductor fabrication cleanrooms (ISO Class 5–7)
• Vibration decoupling of multi-axis nanopositioning platforms used in AFM/STM hybrid setups
• Integration into R&D test benches for gravitational wave detector prototype components
• Enabling stable operation of ultrafast laser systems (e.g., OPAs, HHG sources) where pulse-to-pulse phase coherence depends on platform rigidity

FAQ

What is the maximum static load per Duo module, and can modules be combined?
Each Duo module supports up to 400 kg statically. Multiple modules can be synchronized in parallel via master-slave daisy-chaining to support payloads exceeding one ton while preserving uniform dynamic response.
Does the system require external cooling or HVAC integration?
No. The Duo Series operates passively cooled and is rated for continuous duty in ambient temperatures from 15 °C to 30 °C and relative humidity ≤ 70 % non-condensing.
How is performance verified after installation?
Accurion provides a factory-calibrated reference accelerometer and vibration test protocol aligned with ISO 20482 Annex D. Users may perform in-situ transfer function measurement using standard shaker excitation or ambient vibration analysis.
Is the control system compatible with third-party DAQ or PLC networks?
Yes—via optional Modbus TCP or EtherCAT gateway modules (sold separately), enabling synchronization with motion controllers, environmental monitoring systems, or MES-level data historians.
Can the Duo Series be retrofitted to existing optical tables?
Yes. Standardized M6 mounting patterns and adjustable leveling feet allow direct bolt-down integration onto steel or granite optical tables without structural modification.