THE ANALYSIS OF FOUR TYPES OF FLUIDIC ACTIVE INTEGRATION CIRCUITS,
Abstract
Linear system analysis techniques were used to analyze several proposed integration circuits. This approach involved use of the approximate fluidic-electrical analogy between circuit components as well as several simplifying assumptions. Among these were resistance linearity and the use of active element static parameters to define element dynamic operation. After each circuit was analyzed by the above techniques, a close examination was made of all factors affecting integration error. Methods were then found to minimize this error. Results indicate that while all four integration circuits are theoretically feasible, integration error contributions and fabrication difficulties favor the use of just two types of integration circuits. The first of these yields integral control only and involves the use of two load-insensitive proportional amplifiers as the active components. The second is a circuit which results in proportional-plus-integral control when used in a feedback control system. Both of these circuits can incorporate commercially manufactured fluidic components in their design and are directly applicable to fluidic feedback control systems. Further, the two circuits involve jet-deflection amplifiers whose static characteristics are not true constants, but instead are dependent on various element pressures. Therefore, both circuits must be adjusted to yield minimum integration error for each application. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1968
- Accession Number
- AD0671576
Entities
People
- Kenneth L. Waters
Organizations
- Boeing Commercial Airplanes