A FLOW-DIAGRAM TECHNIQUE FOR TIME-VARYING COORDINATE SYSTEMS.
Abstract
Time-varying coordinates systems are encountered in a variety of engineering problems, examples being antenna design involving moving platforms, inertial navigation systems, and fire control systems. A flow-diagram technique applied to the study of angular position, velocity, and acceleration and to the externally applied forces and torques required for such motion facilitates problem visualization and provides insight to requirements for position control and methods of isolating the controlled member from the motion of the platform. Kinematic and kinetic problems for rigid-body motion are directly formulated into flow diagrams without intervening mathematical treatment. Simplifications are then performed at the flow-diagram level without concern for the particular problem once it has been put in this form. Both hardware and software methods are then available for directly implementing these flow diagrams. A tutorial approach to rigid-body problems in kinematics and kinetics is adopted for developing the flow-diagram method. Emphasis is placed on problem visualization and ease and flexibility in constructing flow diagrams. Flow diagrams are applied to several two- and three-axis antenna designs. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 26, 1970
- Accession Number
- AD0709078
Entities
People
- C. A. Bass
Organizations
- United States Naval Research Laboratory