31 results about "Transformed phase" patented technology

The method provides a spectral speech description to be used for synthesis of a speech utterance, where at least one spectral envelope input representation is received. In one solution the improvement is made by manipulation an extremum, i.e. a peak or a valley, in the rapidly varying component of the spectral envelope representation. The rapidly varying component of the spectral envelope representation is manipulated to sharpen and/or accentuate extrema after which it is merged back with the slowly varying component or the spectral envelope input representation to create an enhanced spectral envelope final representation. In other solutions a complex spectrum envelope final representation is created with phase information derived from one of the group delay representation of a real spectral envelope input representation corresponding to a short-time speech signal and a transformed phase component of the discrete complex frequency domain input representation corresponding to the speech utterance.

The invention discloses a making method of heat-proof ABS polymer through continuous bulk method, which comprises the following steps: inputting main material; inputting secondary material; grafting main material to transform phase; grafting the secondary material to transform phase; blending main material and secondary material; obtaining the product with swelling index at 9-15, rubber content at 14-16% and grain size at 1-2um; fitting for heat-proof modification and accessory manufacturing in the automobile domain.

The invention discloses a double-image encryption and decryption method which comprises: an image combination step of combing original images; a chaotic scrambling step of scrambling and expanding a combined image by using Logistic chaotic mapping; an image decomposition step of decomposing the chaotically-scrambled image; a modulation phase mask generating step of generating a phase mask based on a chaotic random sequence generated by the chaotic mapping and the decomposed image; a temporary image generating step of generating a temporary image according to the image obtained by decomposition and the phase mask; multi-parameter discrete fraction angle transformation steps of performing two-dimensional DMPFAT transformation on the temporary image and truncating a transformed phase part to obtain a final ciphertext image; an initial value of the chaotic mapping in chaotic scrambling and/or a parameter value of multi-parameter discrete fraction angle transformation are used as private secrete keys. The method disclosed by the invention is convenient for the storage, the transmission and the management of the secrete keys; the secret key space of a cryptographic system is enlarged, and the safety and the effectiveness of the method are improved.

The invention discloses an induction signal control method for a ring-shaped intersection, comprising the following steps of: setting a ring circling vehicle arrival detection coil, a ring entering and ring surrounding vehicle queuing detection coil and a ring circling induction signal lamp at the ring-shaped intersection; judging whether the arrival of the following ring circling vehicles is detected by the ring circling vehicle arrival detection coil within ring circling vehicle preliminary green light time, if not, transforming phase, setting ring entering vehicle preliminary green light time, if so, judging whether the queuing vehicle is detected by the ring entering vehicle queuing detection coil; if no queuing vehicle is detected by the ring entering vehicle queuing detection coil, prolonging ring circling green light interval time, and if the queuing vehicle is detected by the ring entering vehicle queuing detection coil, transforming the phase, and providing ring entering preliminary green light time. With the control method, the priority of the ring circling vehicles can be ensured, when the vehicle queue is too long, benefits of the ring circling vehicles and the ring entering vehicles can be balanced, so that the control method is suitable for random arrival of the traffic, and can thoroughly settle the conflict between the ring entering vehicles and the ring circling vehicles, reduce delay of the traffic, alleviate traffic jams and improve traffic safety.

The invention belongs to the technical field of signal processing, in particular to an optical fiber current transformer phase difference detecting and processing device, and aims to provide a device which contributes to improving the accuracy and the completeness of an output sample of a photodiode and reducing noise interference and simultaneously can be compatible with various photodiode devices. The optical fiber current transformer phase difference detecting and processing device is characterized by comprising a two-way A/D converter and a digital signal compensator. The optical fiber current transformer phase difference detecting and processing device has the advantages that: by adopting the two-way A/D converter and the digital signal compensator, the photodiode in an optical fiber current transformer system outputs, samples and processes simultaneously, so that the problems of low accuracy, high noise and inadaptation to large dynamic range of the photodiode caused by a one-path A/D converter can be solved well; therefore, higher accuracy, lower noise and the adaptation to wider dynamic output can be brought.

2D transformations and their inverses have implementations as a series of lifting steps arranged to reduce computational complexity (ie reduce the number of non-general operations). This pair of transforms has energy-compact properties similar to discrete cosine transforms (DCTs), and is also lossless and scale-independent. Compared to a separable DCT transformation implemented as a 1D DCT transformation applied separately to the rows and columns of a 2D data block, the transformation operation is rearranged as a basic transformation consisting of a 2×2 Hadamard transformation and a 2×2 transformation adding lifting rotation series. These basic transformations have implementations as sequences of lifted operations.

The invention relates to the field of relay protection of a power system, in particular to a method and a device for phase loss protection of an injection transformer line. The device comprises a control module, an injection power unit and a measuring unit, wherein the injection power unit is used for injecting current into the neutral point of the transformer, the input end of the control moduleis connected to the measuring unit, and the measuring unit comprises a zero-sequence current detecting module and a zero-sequence voltage detecting module for accessing the neutral point of the transformer to collect the zero-sequence current and the zero-sequence voltage of the neutral point; the control module determines whether the transformer line is out of phase by the data change of the zero-sequence current and/or the zero-sequence impedance, and the trip action and/or alarm information is output if the transformer line is out of phase to reliably detect and control the phase loss faultof the transformer under light load or no load condition, thereby solving the problem of damages to the power plant equipment caused by the failure of timely protection due to difficult transformer phase loss fault detection under light load or no load condition.

Optical receivers configured to demodulate phase modulated optical signals. In one example, an optical signal receiver includes an optical resonator configured to receive an arriving optical signal and to emit an output optical signal in response to receiving the arriving optical signal, the optical resonator being further configured to transform phase transitions corresponding to phase modulation of the arriving optical into intensity modulation of the output optical signal, an opto-electrical converter configured to convert the output optical signal into an electrical signal, a pulse detector configured to detect pulses in the electrical energy indicative of the phase transitions in the arriving optical signal, and a memory configured to record timing information associated with the pulses detected by the pulse detector.

A communication device includes antennas to receive a first signal from a remote device, wherein the first signal corresponds to a first operational mode. A baseband processor selects either a first operational mode for transmitting a second signal or a second operational mode for transmitting the second signal. When the second operational mode is selected the baseband processor transforms the phase-related information corresponding to the first operational mode to transformed phase-related information corresponding to the second operational mode. The antennas transmit the second signal to the remote device in accordance with the transformed phase-related information corresponding to the second operational mode.

The invention discloses a method for selecting large-capacity main transformer optimal split-phase closing time. The method comprises the following steps sequentially: defining an absolute value of aratio of pre-breakdown voltage among circuit breaker contacts to a time as insulation strength diminution rate of a contact gap, expressing as kp; defining a maximum slope of an impressed voltage waveform between contact ports of a circuit breaker as km; comparing the insulation strength diminution rate kp and the maximum slope km of the voltage waveform, and calculating an optimal target closingangle. A high-capacity main transformer optimal split-phase closing time selection method is provided. When the method is applied, according to a circuit breaker closing characteristic, the optimal target closing angle of a transformer phase selection switching-on strategy can be derived theoretically under a requirement of considering circuit breaker mechanical operation time dispersion based onconsidering circuit breaker operation discreteness and a pre-breakdown characteristic, and increasing amount of access time of a closing resistor caused by pre-breakdown phenomenon can be quantized and obtained, thereby accurately evaluating the pre-breakdown characteristic of the circuit breaker on the magnetizing inrush current.

The invention provides a method for preparing silicon dioxide dielectric films. The method for preparing the silicon dioxide dielectric films sequentially includes steps of carrying out solution filling on wafers; transforming phases; carrying out hydrolysis; carrying out final treatment. The step for transforming the phases is carried in phase transformation solution. The method for preparing the silicon dioxide dielectric films has the advantages that the flowability of coating solution is sufficiently utilized, and accordingly the method is high in gap filling performance and technological stability.

The invention provides a method for transforming a fire coal power generator set into a phase modifier. The method comprises the following steps that firstly, a high-pressure cylinder rotor and a power generator rotor are flexibly connected; secondly, a medium-pressure cylinder of a steam turbine and a steam inlet and outlet port of a low-pressure cylinder are obstructed, and high-temperature andhigh-pressure steam of a boiler directly enters a high-pressure cylinder for acting; thirdly, exhaust steam of the high-pressure cylinder serves as the high-temperature end, one part enters a deaerator, the other part directly enters a condenser, and the input number of high-pressure heaters and the steam inlet volume of the high-pressure heaters are adjusted according to the running load; and fourthly, excitation system control parameters are adjusted, power generator runs in an overexcitation manner and outputs sensitive reactive power to a power grid or runs in an underexcitation manner and outputs capacitive reactive power to the power grid. The transformed phase modifier has the system function of participation in the power grid phase modulating process, and the problem that in the domestic power grid long-distance conveying process, the power grid dynamic reactive supporting capability is weakened is solved. Meanwhile, effective reutilization of the idle fire coal power generator set is achieved, and optimizing and upgrading of a traditional thermal power unit is achieved.

The invention discloses a trajectory sensitivity method-based phase-shifting transformer phase angle adjusting method. The method comprises the following specific steps: 1, modeling is carried out on a high-voltage power system, and the model is simplified into the simplest circuit model; 2, the phase-shifting transformer (PST) is added between two nodes, voltage at a power utilization end can be controlled through adjusting the phase angle between the two nodes, and power flow between the nodes is thus adjusted; 3, the trajectory sensitivity method is adopted to predict and adjust the phase angle, the current voltage state is judged according to the offset degree of the current voltage on the best voltage, when the offset distance at the next time point is predicted to be over large and exceeds a safety range according to the algorithm, the phase angle is timely adjusted to enable the voltage range at the next time point to be in the safety range, and voltage stability is ensured; and 4, the third step is repeated for real-time detection and control.

The invention relates to the field of transformer intelligent control, in particular to an ultra-high voltage AC transformer phase selection, opening and closing control method and device. The methodcomprises the following steps: detecting the main control phase voltage of the ultra-high voltage AC transformer when receiving an opening command and controlling the three phases of the ultra-high voltage AC transformer to open according to the main control phase voltage, wherein the residual magnetic link of the ultra-high voltage AC transformer is close to or equal to zero after opening; and controlling the three phases of the ultra-high voltage AC transformer to close when receiving a closing command. The three-phase opening and closing of the ultra-high voltage AC transformer are controlled through one-phase voltage to realize that the residual magnetic link of the ultra-high voltage AC transformer is close to or equal to zero after the opening, and the ultra-high voltage AC transformer is controlled to close under the condition of zero residual magnetic link and thus the effect of suppressing the closing impact can be achieved.

The invention discloses a file conversion method and device which can be used in the financial field or other technical fields. The file conversion method comprises the following steps: searching a column conversion rule having a mapping relationship with a to-be-converted file in a preset mapping relationship table; processing each column of data of the to-be-converted file according to the column conversion rule to generate at least one column of target data; and according to the at least one column of target data, generating a file of a target structure corresponding to the to-be-converted file. The device is used for executing the method. According to the file conversion method and device provided by the embodiment of the invention, conversion among files of different structures is realized by utilizing a computer technology, compared with a current manual conversion method, manpower is liberated, the conversion error rate is also reduced, the column conversion rule can be configured according to requirements, and the conversion efficiency is improved. Compared with manual conversion, the method can adapt to complex conversion scenes.

A method for encoding a raw lenselet image includes a receiving phase, wherein at least a portion of a raw lenselet image is received, the image including a plurality of macro-pixels, each macro-pixel having pixels corresponding to a specific view angle for the same point of a scene, and an output phase, wherein a bitstream having at least a portion of an encoded lenselet image is outputted. The method has an image transform phase, wherein the pixels of said raw lenselet image are spatially displaced in a transformed multi-color image having a larger number of columns and rows with respect to the received raw lenselet image, wherein dummy pixels having undefined value are inserted into the raw lenselet image and wherein the displacement is performed so as to put the estimated center location of each macro-pixel onto integer pixel locations. Moreover, the method includes a sub-view generation phase, wherein a sequence of sub-views is generated, said sub-views having pixels of the same angular coordinates extracted from different macro-pixels of the transformed raw lenselet image. Finally, the method has a graph coding phase, wherein a bitstream is generated by encoding a graph representation of at least one of the sub-views of the sequence according to a predefined graph signal processing technique.

The invention relates to an array signal alignment method and apparatus, a computer device and a storage medium, belonging to the technical field of signal processing. The method comprises the following steps of: acquiring array signals received by a signal receiving unit; processing the array signals to obtain corresponding frequency domain array signals; determining a corresponding phase shift sequence according to a phase shift factor of the signal receiving unit; transforming the phase shift sequence according to a triangular sum difference formula to obtain the transformed phase shift sequence; obtaining the phase shifted frequency domain array signal according to the frequency domain array signal and the transformed phase shifted sequence; obtaining the aligned array signal accordingto the phase shifted frequency domain array signal. The technical scheme solves the problem that the traditional array signal alignment method is not compatible with the processing efficiency and thememory. Fast alignment of array signals can be achieved with memory savings.