Shaker Systems of Data Physics
SignalForce Vibration Test Systems (both air- and water-cooled) are available as turnkey vibration test systems that include: shaker tables, power amplifiers, slip tables, shaker head expanders, fixtures, and thermal barriers for environmental testing. Data Physics sales and support are adept at understanding user applications and providing properly configured test solutions to meet both current and future needs.
Choosing the Correct Shaker for a Testing Application
The graph below is a generic (frequency domain) performance envelope for any shaker, as defined by its maximum displacement, maximum velocity, and maximum force.
The first step in selecting an appropriate Shaker is to define the test profiles that are to be run (sine, random, shock, replication, etc.) and to gather dimensional information on the test article and fixtures that will need to be used (LxWxH and total mass). For any shaker, the added mass of the DUT and fixtures moves the performance envelope from the black line to wherever the blue line might be. Shaker sizing calculations are done to make sure all test profiles will fit within the envelope.
SignalForce Vibration Test Systems provide dynamic testing solutions including: shakers , power amplifiers, slip tables, head expanders & fixtures for environmental test, environmental stress screening, modal excitation and AGREE testers.
SignalForce shakers are renowned for superior designs that offer higher reliability. Users of vibration test systems for product test and dynamic signal analyzers for modal analysis are now able to buy a complete solution of the highest quality and performance from one source.
SignalForce amplifiers, or shaker amplifiers, provide very high levels of efficiency with superior levels of performance. These amplifiers occupy little space and are suitable for driving shakers from all manufacturers, as well as other laboratory applications. While new shaker systems include matched amplifiers, Data Physics engineers can match our modern power amplifiers to any electrodynamic shaker.
EMC has been a major factor in the design of the digital switching amplifiers. Full use has been made of Faraday cages, compartmen-talization, filtered interconnections, segmented wiring, common mode chokes for symmetrical currents, mains filters, optical coupling of signals and screened cables. All amplifiers are also available CE marked.
Linear amplifiers are available from 30 to 1000 VA and digital switching amplifiers are available from 1 kVA to 470 kVA. Switching amplifiers are used for medium and large shakers and are commonly replaced on very old shakers.
Switching Amplifier Features:
Up to 95% efficient
Switches at >105 kHz
1 KVA, 5 KVA, and 10 KVA modules
Includes field and degaussing supplies
Protection against over current and over temperature
Remote and chamber interfaces
Increase your shaker’s performance with SignalForce IGBT amplifiers.
Designed with the Data Physics LE-series water cooled shakers in mind, the new LE-DSA15 IGBT amplifiers are based on the same reliable and robust architecture as the LE-DSA10 series units which have a proven track record of continuous high output operation. The LE-DSA15 amplifiers are rated for 200 Vrms continuous operation which will allow for high velocity testing without the need for an output transformer. When connected to a LE-DSA15K amplifier, the LE-2016-3′ shaker systems are capable of up to 170 in/sec (4.32 m/s) velocity shock at 11 mSec.
Less is More
The elimination of the output transformer allows the shaker to be direct-coupled, making it possible to operate the shaker at less than 5 Hz.
The transformerless design also eliminates the need for switching for sine, random, and shock profiles.The overall size of the amplifier is thus reduced, freeing up valuable floor space in your vibration test laboratory.
More Control with E-Link
Multi-bay digital switching amplifiers represent a sizeable investment and can provide a significant amount of power, generally more than 120 kVA. With large systems and amplifiers it becomes more important to monitor and control the amplifier remotely and instantly. The E-Link remote control interface does just that by providing the user easy access via an Ethernet connection to the amplifier allowing remote control of all amplifier functions and providing a remote dashboard of all amplifier parameters. This means you can optimize the amplifier setup for each test right from your control desk.
E-Link allows the user to remotely shutdown extra power bays or reduce the field current when running low force tests. The result is not only less wasted energy and lower energy costs, but increased life of the system for reduced maintenance costs.
- TCP/IP Connectivity – not cable length prohibited, such as RS-232 or USB devices
- Complete Amplifier Control and Status Monitoring
- Digital Gain Control
- Digital Armature Voltage and Current readouts with visual indications showing high and low limits
- Digital Field Supply Voltage and Current readouts with visual indications showing high and low limits
- Armature and Field Coil water temperature monitoring
- Armature Temperature Monitoring
- Persistent Emergency Stop and Gain Control on every tab
- Fully integrated Fault Monitoring
- Switching for Sine/ Random Selection
- Switching for Field Current- 50% and 100% field
- Output Waveform Display for Diagnostics