Abstract: Systems and methods of providing guidance to assist eVTOL aerial vehicles in performing landing and takeoff operations at landing locations in GPS-denied environments are disclosed. An exemplary system includes an aerial vehicle comprising a camera configured to generate images based on information transmitted by a plurality of light sources located adjacent a landing surface for the aerial vehicle and a controller circuit configured to receive the generated images and determine a position and an orientation of the aerial vehicle based on the received images, wherein the light sources are arranged in a predetermined pattern on the landing surface, and wherein a characteristic of light emitted from each of the light sources is modulated with respect to time.

Abstract: This disclosure provides a circular force generator system (100) which incorporates a failsafe component. The failsafe component provides a brake system on the circular force generator such that the rotor of the circular force generator is rapidly brought to a stop in response to a predetermined sensor output or a manual override of the circular force generator system.

Abstract: Systems and methods of providing guidance to assist eVTOL aerial vehicles in performing landing and takeoff operations at landing locations in GPS-denied environments are disclosed. An exemplary system includes an aerial vehicle comprising a camera configured to generate images based on information transmitted by a plurality of light sources located adjacent a landing surface for the aerial vehicle and a controller circuit configured to receive the generated images and determine a position and an orientation of the aerial vehicle based on the received images, wherein the light sources are arranged in a predetermined pattern on the landing surface, and wherein a characteristic of light emitted from each of the light sources is modulated with respect to time.

Abstract: Apparatus and vibratory separators having a base, a separator housing movably connected with the base, the separator housing including a top having an inlet chute, a bottom having a liquid discharge chute, a cylindrical sidewall defining an axial centerline and having a discharge spout, and at least one screen mounted within the separator housing. A vacuum system proximate the at least one screen may also be incorporated. The apparatus further includes at least one circular force generator (CFG) disposed on the separator housing, and at least one sensor positioned on the apparatus for measuring an operating function associated with and enabled by the vibration profile, and a controller in electronic communication with the sensor and with the at least one CFG. The difference between the measured operating function and the prescribed operating function is reduced. The apparatus may also include at least one CFG having a plurality of imbalanced masses which rotate in a plane parallel the axial centerline.

Abstract: Apparatus and vibratory separators having a base, a separator housing movably connected with the base, the separator housing including a top having an inlet chute, a bottom having a liquid discharge chute, a cylindrical sidewall defining an axial centerline and having a discharge spout, and at least one screen mounted within the separator housing. A vacuum system proximate the at least one screen may also be incorporated. The apparatus further includes at least one circular force generator (CFG) disposed on the separator housing, and at least one sensor positioned on the apparatus for measuring an operating function associated with and enabled by the vibration profile, and a controller in electronic communication with the sensor and with the at least one CFG. The difference between the measured operating function and the prescribed operating function is reduced. The apparatus may also include at least one CFG having a plurality of imbalanced masses which rotate in a plane parallel the axial centerline.

Abstract: Apparatus having a base, a separator housing movably connected with the base, the separator housing including a top having an inlet chute, a bottom having a liquid discharge chute, a cylindrical sidewall defining an axial centerline and having a discharge spout, and at least one screen mounted within the separator housing. A vacuum system proximate the at least one screen may also be incorporated. The apparatus further includes at least one circular force generator (CFG) disposed on the separator housing, and at least one sensor positioned on the apparatus for measuring an operating function associated with and enabled by the vibration profile, and a controller in electronic communication with the sensor and with the at least one CFG. The difference between the measured operating function and the prescribed operating function is reduced. The apparatus may also include at least one CFG having a plurality of imbalanced masses which rotate in a plane parallel the axial centerline.

Abstract: Apparatus having a base, a separator housing movably connected with the base, the separator housing including a top having an inlet chute, a bottom having a liquid discharge chute, a cylindrical sidewall defining an axial centerline and having a discharge spout, and at least one screen mounted within the separator housing. A vacuum system proximate the at least one screen may also be incorporated. The apparatus further includes at least one circular force generator (CFG) disposed on the separator housing, and at least one sensor positioned on the apparatus for measuring an operating function associated with and enabled by the vibration profile, and a controller in electronic communication with the sensor and with the at least one CFG. The difference between the measured operating function and the prescribed operating function is reduced. The apparatus may also include at least one CFG having a plurality of imbalanced masses which rotate in a plane parallel the axial centerline.

Abstract: The invention provides a system for creating a prescribed vibration profile on a mechanical device comprising a sensor (30) for measuring an operating condition of the mechanical device, a circular force generator CFG (20) for creating a controllable rotating force vector comprising a controllable force magnitude, a controllable force phase and a controllable force frequency, a controller (22) in electronic communication with said sensor and said circular force generator, the controller operably controlling the controllable rotating force vector, wherein the difference between the measured operating condition and a desired operating condition is minimized.

Abstract: A data carrier detector for a packet-switched communication network. The detector includes an envelope detector to provide peak-to-peak amplitude of an incoming waveform at any given time, a peak-to-peak amplitude monitor to monitor peak-to-peak amplitude, and to set a trigger when the peak-to-peak amplitude changes by a predetermined amount. The detector also includes a data packet searcher to start searching for a data packet when the peak-to-peak amplitude monitor issues the trigger. The detector further includes a data packet processor to process and extract information from the recovered data packet.

Abstract: A method is described comprising: defining a base station congestion condition; detecting that the congestion condition is met with respect to a first base station and allocating a wireless device to an alternate base station instead of the first base station in response to the congestion condition being met, as long as RSSI measured from the alternate base station is above a predetermined alternate base station threshold (“ABT”) value.

Abstract: A wireless apparatus is described comprising: an RF subsystem to support communication over a wireless network according to a specified network protocol; a Host subsystem to execute program code; and an interface to provide communication of control signals between the RF subsystem and the Host subsystem, the control signals allowing the RF subsystem and/or the Host subsystem to enter into a low power state independently of one another.

Abstract: An apparatus and method are disclosed for improving signal transmission on a wireless device such as a personal digital assistant, wireless messaging device, or cellular phone. An initial transmission power level is selected based on received signal strength. If subsequent transmissions at the initial power level are unreliable, then the power is increased by a predetermined amount. Power level increases continue until signal transmission is reliable or the highest power level is reached. One embodiment of the system maintains its heightened power level across multiple communication dialogs.