Tuned Mass Damper (TMD) M-Series Resonant Device
Features
- Highly efficient moving mass to parasitic mass ratio
- Tunable resonant frequency via mechanical adjustment
- Tunable damping ratio via a trimmer on devices
- Convertible to an active reaction mass actuator (RMA) which can be useful for:
– Structural dynamics testing with minimal mass loading
– Active vibration damping or cancellation systems
Applications
- Precision micro-vibration
- Optical instruments
- Machine tools
- Product testing
- Semiconductor fabrication equipment
- Electron microscopes
- Directed energy systems
Hardware Specifications*
| Specification | Units | M05 | M1 | M1 |
| Moving Effective Weight | Lbs (Kg) | 0.50 (0.23 | 1.05 (0.48 | 2.10 (0.95) |
| Total Device Weight | Lbs (Kg) | 0.62 (0.28) | 1.37 (0.62) | 2.55 (1.16) |
| Construction | - | Primarily constructed of various metals. Treated to enhance durability and corrosion resistance. | ||
| Operating Temperature1 | Up to 80° C (176° F) | |||
Mechanical Dimensions (See ICD For Further Details)
| Specification | Units | M05 | M1 | M1 |
| O.D | Inch (mm) | 1.99 (48.3) | 2.69 (68.3) | 3.32 (84.3) |
| Stroke ±2 | Inch (mm) | 0.09 (2.3) | 0.13 (3.3) | 0.19 (4.8) |
| Mounted Height | Inch (mm) | 1.73 (43.9) | 2.15 (54.6) | 2.81 (71.4) |
| Thread Depth | Inch (mm) | 0.22 (5.6) | 0.35 (8.9) | 0.30 (7.6) |
| Mounting Thread | - | #10-32 | 1/4”-20 | 3/8”-16 |
Electrical Specifications (RMA Use)
| Specification | Units | M05 | M1 | M1 |
| Coil Resistance | ohms | 5.6 | 6.0 | 7.2 |
| Coil Inductance | mH | 0.7 | 1.3 | 1.7 |
1Wider temperature range versions available upon request.
2Stroke represents the maximum allowable mechanical stroke designed into the unit. Operating at high frequency and/or high vibration magnitudes can cause over stress of internal elements and may result in damage to the device. Consult with Moog for detailed information about stroke limitations.
M-Series resonant device Configurations
| Configuration | Application | Description |
| Tunable Voice Coil Damper | TMD/TVA | The most popular and versatile configuration is an M-series device equipped with a tunable voice coil damper. Applications requiring a TMD or TVA (tuned vibration absorber) will benefit from the tunability of both frequency and damping of this passive device. |
| Active Voice Coil | RMA | This configuration can generally achieve the highest levels of vibration attenuation and give the user power to implement active damping. |
| Fixed Damper | TMD/TVA | This configuration can provide the highest damping levels and is well suited for high frequency applications which require large amounts of energy dissipation from a passive solution. |
The M-series resonant devices are available in the above 3 basic configurations in addition to custom offerings. All configurations are available in three different device sizes (M05,M1,M2) with a variety of frequency tuning ranges.
Performance Specifications
| Units | M05 | M1 | M1 | |
| Frequency: Operational Range3 | Hz | 9-200 | ||
| Frequency: Tunable Range4 | Multiple tuning ranges available. 1X:2.5X Hz ranges | |||
| Damping: Tunable Range4 | %Zeta | See “FREQUENCY VS DAMPING RATIO” | ||
| Damping: Max (no adjust | %Zeta | See “FREQUENCY VS DAMPING RATIO” | ||
| Damping Temperature Dependence | Approximately 0.4% damping constant per degree C. Damping decreases as temperature rises. Further temperature sensitivity may be observed at temperature extremes. | |||
Performance As a Reaction Mass Actuator
| Specification | Units | M05 | M1 | M2 |
| Force Constant | lbf/amp (N/amp) | 1.7 (7.6) | 2.9 (12.9) | 4.6 (20.5) |
3Operational range may vary per application, environment and damping requirements. Consult Moog for further information.
4Consult Moog drawing # MTMD-900 for natural frequency and damper tuning procedure details.
