THE EFFECT OF ROLLING ON A DYNAMICALLY ASYMMETRIC AUTOMATIC CONTROL SYSTEM OF THE FIRST ORDER

A simplified control system consisting of a dynamically asymmetric object without automatic leveling characterized by time constants T1 and T2 for a loading shock and drop, respectively, and an ideal controller with an intensification factor, k, was investigated to determine the effect of periodic ship rolling on asymmetric control organs. A periodic disturbance was considered to be applied to the object and the controller with intensification rates A1 and A2, respectively. The analysis of equations of the system dynamics revealed that the shifting of its oscillation center line depends on two dimensionless parameters which are functions of T1, T2, and k. A given empirical formula indicates practical means for decreasing the shift. The optimal selection of the dimensionless parameters provides an additional possibility for eliminating the shifting of the oscillation center line in control systems of a higher order.

• Corporate Authors:

  TsNIIMF

  Leningrad,   USSR 
• Authors:
  • Grigoryev, L I
  • Sobolev, L G
• Publication Date: 1967

Media Info

• Pagination: p. 51-53
• Serial:
  • Publication of: Trudy Leningrad Korablestroitelnyy Instituta
  • Issue Number: 86
  • Publisher: Trudy Leningrad Korablestroitelnyy Instituta

Subject/Index Terms

• TRT Terms: Automatic control; Properties of control systems; Ship motion; Stability criteria
• Old TRIS Terms: Automatic control systems; Control systems stability
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00014941
• Record Type: Publication
• Source Agency: Joint Publications Research Service
• Files: TRIS
• Created Date: May 7 1973 12:00AM