Instantaneous radio positioning method and system. Signals from a plurality of spatially distributed transmitters are received at a known reference position and at an unknown position to be determined. A composite of the radio signals, simultaneously including a component signed from each of the transmitters, is digitized and then processed to measure phases that is then digitized. Ambiguity is resolved by finding the location in parameter space of the maximum of an ambiguity function related to...

The present invention relates to a method of controlling a power converter (20) of a synchronous machine system (10), the method comprising sampling phase-current values between the power converter (20) and the synchronous machine (30); selecting a reference frame; regulating a current vector to align with the selected reference frame, the selected reference frame having a direct-axis component and a quadrature-axis component; estimating rotor speed and position as a function of instantaneous po...

An instantaneous voltage dip detection device is provided with: all-pass filter (2) for phase shifting a supply voltage waveform (11) by 90.degree.; a comparator 7 that outputs a signal when the supply voltage waveform (11) is smaller than a threshold (12) in regions of .pi./4 to 3.pi./4, 5.pi./4 to 7.pi./4; a comparator (8) that outputs a signal when a phase shift voltage waveform (13) is smaller than a threshold (14) in regions of 0 to .pi./4, 3.pi./4 to 5.pi./4, 7.pi./4 to 2.pi.; an OR circui...

This is a method and means for maintaining a constant supply of a fluid with specific characteristics within a fluid supply conduit from a supply source of the fluid with specific characteristics at a point of service of the fluid with specific characteristics in which a first open end of a recirculation conduit is located within the fluid with specific characteristics supply conduit adjacent the point of service. A second end of the recirculation conduit is connected to pump means in such manne...

The invention provides a highly sensitive measurement of retardance and slow axis orientation, accurately and instantaneously, across a full two-dimensional image. There are no moving parts and there need not be any electro-optic tuning as part of the measurement. It is ideally adapted to real-time imaging and is well-suited to use with biological and medical samples, including visualizing structures in oocytes. The invention splits a light beam into several beams, which are analyzed using ellip...

The present invention has as an object thereof to provide an intelligent electronical system which conducts the real-time recognition of real world data and makes decisions with respect to the data; that is to say, a computing circuit having an instantaneous recognition function and instantaneous recognition method. The invention relates to a computing circuit which selects predetermined codes with respect to a group of inputted signals comprising a plurality of analog signals, which is provided...

A method for producing a more accurate instantaneous unit hydrograph particularly for urban areas and for use in specifying the capacities of structures engineered to manage surface water runoff at the watershed catchment. The method uses map data verified by on-site inspections to obtain the input for the computer-performed calculation of initial probabilities, transition probabilities and mean waiting times, and subsequently the instantaneous unit hydrograph. This data includes the areas, link...

A method for reducing instantaneous current on startup is applicable to an electronic device with a management controller. The management controller is electrically connected to a startup processing module of the electronic device such that operations of fans equipped in the electronic device can be controlled via this electrical connection relationship. When the electronic device is turned on, operations of the fans in the electronic device are disabled by the startup processing module. Then, w...

An instantaneous bit-error-rate meter provides an instantaneous, real-time eading of bit-error-rate for digital communications data. Bit-error pulses are input into the meter and are first filtered in a buffer stage to provide input impedance matching and desensitization to pulse variations in amplitude, rise-time and pulse-width. The bit-error pulses are transformed into trigger signals for a timing pulse generator. The timing pulse generator generates timing pulses for each transformed bit-err...

Instantaneous fluid heating device and process including an instantaneous fluid heating device which features forced fluid recirculation past/through heating elements/vessel featuring immersible electrical heating elements in a plurality of heating vessels arranged in series with all of said electrical heating elements/vessels being of equal electrical power/volume so as to be equal in overall heating capacity and receiving electricity simultaneously by on/off switching of electrical power via o...