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In its four configurations, this system represents a broad and important class of practical systems including: Rigid bodies, flexibility in drive trains and coupled discrete vibrating systems with collocated and non-collocated sensor/actuator control. Removable brass weights slide to adjust the inertia of each disk. Precision ball bearings support each disk to provide very low friction. (Viscous friction may be added at the base disk using the Executive Program). This mechanism provides excellent agreement with its analytical models and has proven to be exceptionally robust and reliable in the field.
| Number of Unique Configurations | Four. Six with optional 3rd inertia disk, Eight with viscous friction via optional disturbance drive. |
| Inertia Adjustment | 10:1 |
| Spring Constant Adj. | 2:1 |
| Dynamic Frequencies | Resonances & anti-resonances adjustable in range from 0.8 to 7 Hz |
| Feedback | High res. encoders, 16000 counts/rev. |
| Actuator | 2.0 N-m Fe-Co brushless |
| Servo amplifiers | 5 KHz current loop bandwidth |
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Mechanism shown includes
optional third inertia disk.
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This system is furnished with a comprehensive set of dynamics and vibrations experiments that provide an excellent introduction to one degree of freedom systems and continue through higher order flexible structure dynamics.
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