Electromechanical Oscillator for Producing Vertical, Horizontal, or Circular Motion in a Vertical Plane

摘要

An electromechanical oscillator was developed to simulate both surface-wave-induced motions and subsurface currents for the evaluation of current meters or other sensors that are suspended beneath surface buoys used in oceanographic operations. The oscillator will permit evaluating the hydrodynamic characteristics and performance of sensors under simulated sea conditions at amplitudes up to 4 ft (1.2 m) peak-to-peak and at periods from 3 to 30 s. Mechanical and operational details are described for each of three modes of operation producing circular, vertical, and horizontal motions. Sample experimental results are presented to illustrate the quality of motion in all three modes. (Author)