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- David A. Haessig, Bernard Friedland
- 1990 American Control Conference
- 1990

Two new models for "slip-stick" friction are presented. One, called the "bristle model," is an approximation designed to capture the physical phenomenon of sticking. This model is relativelyâ€¦ (More)

State-dependent Riccati equation (SDRE) methods for designing control algorithms and observers for nonlinear processes entail the use of algebraic Riccati equations. These methods have yielded aâ€¦ (More)

- Bernard Friedland
- Automatica
- 1997

A new algorithm for estimating constant parameters in a dynamic system is presented. A generalization of a recently developed method for estimating the coefficient of friction in a dynamic system;â€¦ (More)

- Bernard Friedland
- IEEE Transactions on Aerospace and Electronicâ€¦
- 1973

The Kalman filtering technique is used to obtain analytical expressions for the optimum position and velocity accuracy that can be achieved in a navigation system that measures position at uniformâ€¦ (More)

- Bernard Friedland
- IEEE Transactions on Aerospace and Electronicâ€¦
- 1978

A brief review of the theory of strapdown inertial navigation is presented in which the attitude of the sensor box with respect to inertial space is represented by the four-parameter quaternionâ€¦ (More)

- Douglas E. Williams, Bernard Friedland
- 1986 American Control Conference
- 1986

The state-space techniques of modern control theory are used to develop a methodology for the design of autopilots for bank-to-turn missiles. The methodology accommodates the gyroscopic and coriolisâ€¦ (More)

- A. Harnoy, Bernard Friedland, Samuel Cohn
- IEEE Control Systems
- 2008

Friction may well be nature's most useful phenomenon. In machinery in which it is not the driving force, however, friction is an undesirable parasitic phenomenon, generating heat and wasting energy.â€¦ (More)

- Bernard Friedland
- 1992 American Control Conference
- 1992

A control system design for the ACC benchmark problem of controlling the position of one of a pair of spring coupled cars is presented. The design is based on the use of a reduced-order observer toâ€¦ (More)

- Bernard Friedland, Sofia Mentzelopoulou, Young-Jin Park
- 1993 American Control Conference
- 1993

An observer for estimating the vector of Coulomb friction force coefficients in a multimass system is presented. The vector is assumed to be a linear combination of sgn(Â·) functions of relativeâ€¦ (More)

- Bernard Friedland
- IEEE Transactions on Aerospace and Electronicâ€¦
- 1982

Unknown variances of the noises that excite a time-invariant, linear dynamic system and/or in the observation of its output can be estimated by use of multiple observers. One observer is needed, inâ€¦ (More)