An integrated threat localization and avoidance methodology is proposed for intelligent control o... more An integrated threat localization and avoidance methodology is proposed for intelligent control of unmanned air vehicles and pilot advisory systems in manned aircraft operating in a threat environment. Passive threat warning techniques are used to maintain electronic silence of the vehicle. Aircraft trajectories which are optimal with respect to time, fuel, risk, and final position are generated with a priori information and provided to a localization algorithm which identifies the position of an emitting threat to within a known maximum area of uncertainty. The method adapts throughout the mission to uncertain a priori information by providing increasingly more accurate threat location estimates and updated optimal flight trajectories.
We consider a linear quadratic optimal regulation
problem of a servo motor in the presence of st... more We consider a linear quadratic optimal regulation
problem of a servo motor in the presence of stochastic
load disturbance subject to a constraint that establishes a
desired motor winding lifetime. To satisfy the constraint, a
family of LQR control designs is parameterized with a single
scalar performance weight that establishes a trade-off between
performance and control power. Power analysis approach is
then used to find the optimal value of the parameter that
provides maximum disturbance rejection control in the given
LQR family subject to the desired motor lifetime constraint.
Systems and methods for development testing of vehicles and components are disclosed. In one embo... more Systems and methods for development testing of vehicles and components are disclosed. In one embodiment, a system includes a position reference system and a command and control architecture. The position reference system is configured to repetitively measure one or more position and motion characteristics of one or more vehicles operating within a control volume. The command and control architecture is configured to receive the repetitively measured characteristics from the position reference system, and to determine ...
An integrated threat localization and avoidance methodology is proposed for intelligent control o... more An integrated threat localization and avoidance methodology is proposed for intelligent control of unmanned air vehicles and pilot advisory systems in manned aircraft operating in a threat environment. Passive threat warning techniques are used to maintain electronic silence of the vehicle. Aircraft trajectories which are optimal with respect to time, fuel, risk, and final position are generated with a priori information and provided to a localization algorithm which identifies the position of an emitting threat to within a known maximum area of uncertainty. The method adapts throughout the mission to uncertain a priori information by providing increasingly more accurate threat location estimates and updated optimal flight trajectories.
We consider a linear quadratic optimal regulation
problem of a servo motor in the presence of st... more We consider a linear quadratic optimal regulation
problem of a servo motor in the presence of stochastic
load disturbance subject to a constraint that establishes a
desired motor winding lifetime. To satisfy the constraint, a
family of LQR control designs is parameterized with a single
scalar performance weight that establishes a trade-off between
performance and control power. Power analysis approach is
then used to find the optimal value of the parameter that
provides maximum disturbance rejection control in the given
LQR family subject to the desired motor lifetime constraint.
Systems and methods for development testing of vehicles and components are disclosed. In one embo... more Systems and methods for development testing of vehicles and components are disclosed. In one embodiment, a system includes a position reference system and a command and control architecture. The position reference system is configured to repetitively measure one or more position and motion characteristics of one or more vehicles operating within a control volume. The command and control architecture is configured to receive the repetitively measured characteristics from the position reference system, and to determine ...
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Papers by John L Vian
problem of a servo motor in the presence of stochastic
load disturbance subject to a constraint that establishes a
desired motor winding lifetime. To satisfy the constraint, a
family of LQR control designs is parameterized with a single
scalar performance weight that establishes a trade-off between
performance and control power. Power analysis approach is
then used to find the optimal value of the parameter that
provides maximum disturbance rejection control in the given
LQR family subject to the desired motor lifetime constraint.
problem of a servo motor in the presence of stochastic
load disturbance subject to a constraint that establishes a
desired motor winding lifetime. To satisfy the constraint, a
family of LQR control designs is parameterized with a single
scalar performance weight that establishes a trade-off between
performance and control power. Power analysis approach is
then used to find the optimal value of the parameter that
provides maximum disturbance rejection control in the given
LQR family subject to the desired motor lifetime constraint.