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Northrop Grumman Litef Gmbh patents


Recent patent applications related to Northrop Grumman Litef Gmbh. Northrop Grumman Litef Gmbh is listed as an Agent/Assignee. Note: Northrop Grumman Litef Gmbh may have other listings under different names/spellings. We're not affiliated with Northrop Grumman Litef Gmbh, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | Northrop Grumman Litef Gmbh-related inventors


Method for determining states of a system using an estimation filter

Method for determining states of a system by means of an estimation filter, in which first state values are determined by calculating a mean value of a probability distribution for the states, in which a probability for deviation for the case that the first state values deviate from the actual states of the system is calculated, and in which the states of the system are measured as state data. In the method the first state values are corrected by means of the state data then, if the probability for deviation is larger than a threshold.. ... Northrop Grumman Litef Gmbh

Phase modulator for fiber-optic gyroscopes controlled in a zero-mean manner and a fiber-optic gyroscope

The invention relates to a control system (100) for a fiber optic gryoscope, comprising a phase modulator (110) for modulating a phase of a light signal (115) and a control unit (120) for producing a control signal (125), by the value of which the phase is modulated and which is fed to the phase modulator (110). The control signal changes statistically and does not have an average value.. ... Northrop Grumman Litef Gmbh

Acceleration sensor having spring force compensation

The invention relates to an acceleration sensor (100) having a sensor material (120) which is mounted by means of spring elements (130) so as to be movable along a movement axis (x) over a substrate (110), first trim electrodes (140) which are connected to the sensor material (120), and second trim electrodes (150) which are connected to the substrate (110) and are associated with the first trim electrodes (140). When the sensor material is deflected along the movement axis, a spring force acting on the sensor material (120) is generated by the spring elements (130), and when the sensor material (120) is deflected, au electrostatic three acting on the sensor material (120), which counteracts the spring force, is generated by application of an electrical trim voltage between the first trim electrodes (140) and the second trim elements (150).. ... Northrop Grumman Litef Gmbh

Acceleration sensor having a reduced bias and manufacturing method for an acceleration sensor

The invention relates to an acceleration sensor (400) comprising an excitation mass (420) having excitation electrodes (430), which excitation mass is movably mounted over a substrate (410) along a movement axis (x) and comprising detection electrodes (440) which are permanently connected to the substrate (410) and allocated to the excitation electrodes (430). A first group of pairings (450) of excitation electrode (430) and allocated detection electrodes (440) is suitable for deflecting the excitation mass (420) along the movement axis (x) in a first direction (460). ... Northrop Grumman Litef Gmbh

Controller and method for minimizing scale factor errors of a rotation rate sensor

The invention relates to a controller (200) for controlling a rotation rate sensor, having a first control circuit (202) and a second control circuit (204). The first control circuit has a first control unit (210) for controlling an oscillation of the rotation rate sensor along a first direction, a first digital-to-analog converter (240) for converting a first digital control signal (215) output by the first control unit (210) into a first analog signal (245) with which the oscillation of the rotation rate sensor along the first direction is controlled, and a first analog-to-digital converter (250) for converting a first analog measurement signal (235) which describes the oscillation of the rotation rate sensor along the first direction into a first digital read-out signal (255) which is supplied to the first control unit (210). ... Northrop Grumman Litef Gmbh

Method for optimizing the switch-on time of a coriolis gyroscope and coriolis gyroscope suitable thereof

A method for optimizing the switch-on time of a coriolis gyroscope (1) having a mass system (100) which can be excited to an excitation oscillation of the coriolis gyroscope (1) parallel to a first axis (x), wherein a deflection of the mass system on account of a coriolis force along a second axis (y) which is provided perpendicular to the first axis (x) can be verified using an output signal from the coriolis gyroscope, comprises determining the amplitude (a) of the excitation oscillation of the coriolis gyroscope at a defined dine, determining the output signal (s) from the coriolis gyroscope at the defined time, and generating a normalized output signal (s0) from the coriolis gyroscope by multiplying the determined output signal (s) by the quotient of the amplitude (a0) of the excitation oscillation of the coriolis gyroscope in the steady state and the determined amplitude (a).. . ... Northrop Grumman Litef Gmbh

Method and device for determining navigation data

In a method for determining navigation data, positional angle measurement values are determined using a first navigation device (310). A second navigation device (320) is then initialized using the positional angle measurement values determined by the first navigation device (310) both navigation devices are supplied with rotational rate and acceleration measurement values from a common sensor unit in order to determine the positional angle measurement values. ... Northrop Grumman Litef Gmbh








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