Electrodynamic Vibration System
An Electrodynamic Vibration System and an audio system are somewhat similar in the basic principle.In an Electrodynamic Vibration System the Electrodynamic Shaker work like the speakers of an audio system. The Vibration Controller generates the signal that is feed to a Power Amplifier much like an MP3Player of an audio system. The Power Amplifier increases the gain to match with the speaker in an audiosystem and Electrodynamic Shaker in an Electrodynamic Vibration System. The main purpose of speaker in an audio system is to drives the diaphragm to create sound whereas the main purpose of Electrodynamic Shaker in an Electrodynamic Vibration System is to create the vibration itself.
The one big difference between the two is that in an Electrodynamic Vibration System, a sensor is placed on the armature of the Electrodynamic Shaker to sense the acceleration and provide a negative feedback to the Vibration Controller so that it may control the vibrations to meet the required test parameters.
The basic formula behind any Electrodynamic Vibration System is Force = Mass × Acceleration.
- The unit of Force is ‘Newton’ (N) as per SI and ‘kgf’ as per Gravitational Units
- The unit of Acceleration is ‘m/s2’as per SI and ‘g’ as per Gravitational Units
- The unit of Mass is ‘kg’ as per SI and Gravitational Units