Essentially there are three types of vibration machines mechanical, electrodynamic, and electrohydraulic (hydraulic). Each of these machines has characteristics which make it suitable for particular areas of use.
College and Department
BYU ScholarsArchive Citation
Merrell, Melvin Joseph, "Preliminary Design of a Hydraulic Vibration Machine with Variable Amplitude and Frequency, Using Multistage Amplification and Feedback Control" (1966). Theses and Dissertations. 7157.