Showing papers in "Computers & Electrical Engineering in 1973"

TL;DR: This paper presents a tutorial introduction to hierarchical system theory, using optimization theory as a vehicle for presenting the hierarchical concepts, although estimation, identification and other systems problems are also amenable to hierarchical structuring.

TL;DR: This paper presents the results of an investigation of system identification, using the maximum a posteriori criterion, of system parameters within a hierarchical structure.

TL;DR: It is concluded that cellular-logic-in-memory arrays are inappropriate for signal processing because of the high proportion of arithmetic and logical activity that is meaningful.

TL;DR: Several graphic methods are discussed, along with specific tools for graphic portrayal that have been designed with the communication requirements in mind, which helps establish a coupling between scientific and engineering approaches to problems and effective displays for public comprehension.

TL;DR: This paper presents a point-by-point state comparison method of approximating a continuous- data system by a sampled-data system and shows that these gains can be approximated by truncated Taylor series expansions.

TL;DR: The variance of error at the output of a digital control system due to input data quantization and product rounding in a digital controller is derived.

TL;DR: A simple and efficient method is suggested for computing the Jordan canonical form and the corresponding transformation matrix based on the definition of a generalized eigenvector, and a natural extension of Gauss elimination techniques.

TL;DR: The algorithm is structured in a way which enables many of the operations to be performed in parallel; the parallelisms in the algorithm have had an impact on the conceptual design of an array computer.

TL;DR: It is shown that the Estimates of the state and the estimates of the unknown covariances Q and R can be made arbitrarily close to the optimal nonlinear Bayesian estimates by an appropriate choice for the number of parallel paths in the computer.

TL;DR: The filter bank of the pulse-Doppler radar receiver is shown to be realizable by a set of digital filters that can be obtained directly from the DFT.

TL;DR: A generalized approach involving concepts from optimization theory is developed for realizing optimal digital simulations for linear, time-varying, continuous dynamical systems having random inputs by modifying discrete input signal variances.

TL;DR: Trapezoidal convolution derives general and special discrete equivalents of continuous feedback systems in a straightforward manner and a critique of two other published discretizations is presented.

TL;DR: In this article, the dynamics of rotational motion of a spinning orbiting spacecraft consisting of two rigid bodies connected by a flexible joint and arbitrary number of flexible appendages (two of which are flexible massless booms having masses on their tips) is analyzed.

TL;DR: This paper presents a general treatment of hierarchically structured maximum-a posteriori (MAP) estimation and system parameter identification algorithms for large-scale systems and consolidation and unification of previous results in hierarchical systems theory as applied to system identification are accomplished.

TL;DR: A recursive filter design for two-dimensional separable filters is discussed which is based on state variable methods which are guaranteed stability, and shorter word length than filters designed by bilinear mapping techniques, greater computational efficiency and easier design as compared with nonrecursive filters.

TL;DR: The structure of a specific subclass of NAND networks is defined, called C networks, and the problem of detecting stuck-at faults in C networks by applying a sequence of random input patterns is investigated.

TL;DR: In this paper, a fifteen-teenth order dynamic model was developed for the power plant and optimal as well as near-optimal feedback regulators were designed by the method of temporal decoupling.

TL;DR: The relationship among the machine Precision, computation error and condition number in solving linear algebraic systems is derived for floating elimination method by using backward error analysis and it is shown that the negative of the logarithm of the relative error is proportional to the machine precision for fixed system.

TL;DR: The implementation of a semi-physical simulation facility is defined in terms of three basic operations: simulation of target signature range effects, simulation of line of sight effects, and simulation of missile rotation effects.

TL;DR: Design techniques for generative computer-assisted instruction (CAI) systems which are capable of generating problems for students and deriving and monitoring the solutions to these problems are described.

TL;DR: The Gauss elimination technique with full pivoting as generalized to nonsquare, complex matrices is used throughout to determine basis vectors and dependent vector relationships.

TL;DR: In this article, an efficient computational algorithm for estimating the coefficients of the characteristic polynomial of a linear time-invariant multi-output dynamic system, using only output observations, for qualitative analysis of the transition matrix or for evaluating its eigenvalues is described.

TL;DR: A procedure for solving and programming the Newtonian equations of motion for an air-to-air missile is presented and an example of a simulated launch and the resulting trajectories and missile velocity profile are given in the text.

TL;DR: The coefficients of the numerator and denominator polynomials of these network functions are determined directly through the use of optimization techniques, and a design chart produced by applying the method is included.

TL;DR: Simulation and generation of speech confirm the feasibility and corresponding advantages of implementation with the wave digital filter compared to conventional filters.

TL;DR: A method for simulating reliability tests on digital computers whereby additional information such as the probability of completing the tests as a function of time can be obtained.

TL;DR: In this article, the authors considered the design of linear time-varying lowpass filters whose bandwidth varies according to a prescribed slowly varying time function, and the optimization was carried out by using a steepest descent method and a seventh order example is worked out.

TL;DR: An approach for automatically testing complex shipboard systems is developed and an example of a recent Navy development in the area of centralized shipboard, general-purpose, on-line systems for monitoring and fault isolation—the Test Evaluation and Monitoring System (TEAMS).