A system and method of controlling a position of a structure. A position command indicating a desired position for the structure and a position feedback signal indicating the position of the structure are received. A position control signal is generated based on a difference between the desired position and the position indicated by the position feedback signal. A stop feedback signal relative to the position of the structure is received. A stop control signal is generated based on the stop feedback signal and a stop condition for the structure. One of the position control signal and the stop control signal is selected. The selected one of the position control signal and the stop control signal is provided to an actuator for controlling the position of the structure.

A system and method of controlling a position of a structure. A position command indicating a desired position for the structure and a position feedback signal indicating the position of the structure are received. A position control signal is generated based on a difference between the desired position and the position indicated by the position feedback signal. A stop feedback signal relative to the position of the structure is received. A stop control signal is generated based on the stop feedback signal and a stop condition for the structure. One of the position control signal and the stop control signal is selected. The selected one of the position control signal and the stop control signal is provided to an actuator for controlling the position of the structure.

The present invention includes a hunting determination unit configured to determine whether hunting has occurred or not for each of control devices in a power transmission and distribution system based on a control history of the control devices, a time constant calculation unit configured to calculate an adjustment time constant in which a time constant of the control device having state information indicating a state of the control device, with a high significance level, is increased, when the hunting determination unit determines that the hunting has occurred in one or more of the control devices, and a time constant transmission unit configured to transmit the adjustment time constant to the control device.

The present invention includes a hunting determination unit configured to determine whether hunting has occurred or not for each of control devices in a power transmission and distribution system based on a control history of the control devices, a time constant calculation unit configured to calculate an adjustment time constant in which a time constant of the control device having state information indicating a state of the control device, with a high significance level, is increased, when the hunting determination unit determines that the hunting has occurred in one or more of the control devices, and a time constant transmission unit configured to transmit the adjustment time constant to the control device.

A rotor dynamics adjustment system includes a rotor system with at least one compressor section and at least one turbine section operably coupled to a shaft. The rotor dynamics adjustment system also includes one or more rotor system sensors configured to collect a plurality of sensor data from the rotor system, an electric motor operably coupled to the rotor system, and a controller. The controller is operable to monitor the one or more rotor system sensors while the rotor system is rotating. A dynamic motion of the rotor system is characterized based on the sensor data from the one or more rotor system sensors. A damping correction torque is determined to diminish the dynamic motion of the rotor system. The electric motor is commanded to apply the damping correction torque to the rotor system.

A method for closed-loop control of a controlled variable to a given reference variable. The actual value and/or the measured actual value of the controlled variable is/are influenced by a fluctuating effect with a certain periodicity. The controlled variable is readjusted if there is a control difference between the reference variable and an average value of the actual value averaged over the period duration of the periodicity. Measurement values are determined within the period duration of each periodicity at measurement time points in a certain controller cycle, these measurement values correlating with a respective actual value or corresponding to the actual value, and/or being adapted to determine therefrom the control difference between the reference variable and the average value of the actual value. The control difference is determined at each measurement time point and the controlled variable is selectively readjusted.

A method for ascertaining a time characteristic of a measured variable adjustable by an actuator, wherein a time characteristic of a control variable is applied to the actuator, wherein the ascertaining is effected by means of a Gaussian process state model of the behavior of the actuator, wherein the time characteristic of the measured variable of the actuator is ascertained on the basis of a parameterizable family of functions, wherein in the parameterizable family of functions a time dependency of a later latent state, in particular ascertained using a transfer function, of the actuator on an earlier latent state of the actuator and an earlier control variable of the actuator is the same as the applicable dependency of the Gaussian process state model.

A method of adaptive anti-windup protection for a control system with cascaded inner control loop and an outer control loops. The method includes receiving an outer loop feedback signal indicative of the response of a plant controlled by the outer control loop and calculating an inner control loop request such that, it would cause saturation of the control device controlled by the inner control loop. The method also includes converting the calculated inner loop request to outer loop anti-windup request limits using kinematic relationships and transmitting the outer loop anti-windup request limits to a controller of the outer control loop. The method may also include applying the outer loop anti-windup request limits to a controller of the outer control loop to limit the inner loop request generated thereby, and executing an outer control loop control law and an inner control loop control law subject to the anti-windup request limits.

Disclosed herein is a control system for a projection system, including a first subtractor receiving an input drive signal and a feedback signal and generating a first difference signal therefrom, the feedback signal being indicative of position of a quasi static micromirror of the projection system. A type-2 compensator receives the first difference signal and generates therefrom a first output signal. A derivative based controller receives the feedback signal and generates therefrom a second output signal. A second subtractor receives the first and second output signals and generates a second difference signal therefrom. The second difference signal serves to control a mirror driver of the projection system. A higher order resonance equalization circuit receives a pre-output signal from an analog front end of the projection system that is indicative of position of the quasi static micromirror, and generates the feedback signal therefrom.

Disclosed herein is a control system for a projection system, including a first subtractor receiving an input drive signal and a feedback signal and generating a first difference signal therefrom, the feedback signal being indicative of position of a quasi static micromirror of the projection system. A type-2 compensator receives the first difference signal and generates therefrom a first output signal. A derivative based controller receives the feedback signal and generates therefrom a second output signal. A second subtractor receives the first and second output signals and generates a second difference signal therefrom. The second difference signal serves to control a mirror driver of the projection system. A higher order resonance equalization circuit receives a pre-output signal from an analog front end of the projection system that is indicative of position of the quasi static micromirror, and generates the feedback signal therefrom.