138 results about "Transition function" patented technology

The present invention relates to the conversion of signals from RF to baseband using transition functions, or edge functions. These functions typically transition from positive to negative, or from negative to positive, synchronously with the transition of the received pulse signal, effecting detection essentially by synchronously rectifying a signal cycle of the received pulse, producing a net signal at baseband that can be further processed to detect modulation according to the modulation format. It is further disclosed how to configure these systems for optimal reception with a filter optimized for a given detect signal function. Generalizations of the matched filter embodiment lead to further embodiments employing alternative detection functions. Also disclosed is a two-stage version which applies a decode signal to the rectified signal. This step can be performed by a single correlator or by a plurality of correlators in parallel. Coding methods are disclosed to employ two-stage systems for enhanced channelization, and interference rejection.

A method and system for managing storage of one or more data blocks in a programmable data storage device is provided. A data storage controller partitions each of multiple data blocks into multiple sub data blocks comprising a number of bits based on one or more index value descriptors. The data storage controller generates transition vectors from each of the sub data blocks by applying one or more transition functions. The data storage controller encodes one of the transition vectors for each sub data block for obtaining a residual sub data block comprising a reduced number of bits, thereby resulting in increased bit space. The data storage controller generates a composite data block by merging each residual sub data block. The composite data block is configurable for writing to one or more regions in the programmable data storage device free from a disturbance caused by write operations to other regions.

The invention belongs to the technical field of reflection systems, and specifically relates to a circularly-polarized tuning modulator based on a tunable metasurface and a design method thereof. The circularly-polarized tuning modulator is mainly composed of an upper microstrip conduction band layer, a middle dielectric plate and a lower metal grounding plate. The upper microstrip conduction band layer is an electric brush structure and is mainly composed of a circular electric resonance (ELC) structure, a bias circuit and a PIN diode. The circular electric resonance (ELC) structure is composed of an upper semicircular arm, a lower semicircular arm, an arc intermediate opening, central vertical arms and intervals. By controlling the on-off state of the PIN diode, the switching from a turning transition function to a turning maintenance function and the switching from a turning hybridization function to the turning maintenance function are realized for the circularly-polarized tuning modulator. According to the invention, two or more function devices are integrated on one plate, the manufacturing cost is lowered, the efficiency and the reusability are improved, the circularly-polarized tuning modulator is realized without a multi-layer torsion chiral structure, and the circularly-polarized tuning modulator is simple in structure, small in size, low in loss, wide in frequency band and light in weight.

The invention discloses an intelligent substation fault diagnosis method combining topology and relay protection logic. The intelligent substation fault diagnosis method combining the topology and the relay protection logic comprises the following steps of: analyzing network topology modeling processes of a primary system and a secondary system of an intelligent substation; equivalently replacing all groups with a node quantity of 3 by a group node; simplifying an undirected graph; providing a logical inference method in fit with a Petri net principle according to an extension coefficient, a transition function and a transition function; searching logical relation of the primary system and the secondary system by using the entire intelligent substation system as a whole body; and carrying out a fault diagnosis reasoning process through the logical relation of the primary system and the secondary system. The intelligent substation fault diagnosis method is applied to the fault diagnosis reasoning of an intelligent substation, has the advantages of simple, efficient and rapid network topology constructing and searching process, practical fault diagnosis process and accurate result, and can be used for laying a good foundation for operations, such as fault diagnosis and the like, of the intelligent substation.

The invention discloses an unmanned surface vessel path following guidance method considering hybrid multi-target obstacle avoidance. The unmanned surface vessel path following guidance method considering hybrid multi-target obstacle avoidance includes the steps: dividing the guidance process into a path following mode and an obstacle avoidance control guidance mode to improve a DVS guidance algorithm as the basic framework; dynamically programming a smooth reference path formed by lines and curves by means of a GVS, wherein the path following mode and the obstacle avoidance control guidance mode are respectively corresponding to different guide vectors of the DVS; and for obstacle avoidance guidance of a plurality of or hybrid obstacles, determining the current obstacle avoidance target according to the priority sequence and obstacle avoidance control conditions, and starting the obstacle avoidance control mode, wherein the transition function guarantees the smoothness of the DVS guide vectors for switching among different modes. The unmanned surface vessel path following guidance method considering hybrid multi-target obstacle avoidance has applicability for various control strategies and is convenient for combination with the current advanced control algorithm, wherein the control algorithm is used for guaranteeing convergence of DVS for a real ship and guaranteeing effectiveness of the guidance strategy.

The invention provides an unmanned aerial vehicle (UAV) trajectory smoothing method based on Bessel curve transition, comprising the following steps: constructing a Bessel transition function according to known linear route segments, and quickly establishing flight trajectory geometrical characteristics satisfying curvature continuity; with the length of the linear route segments and the allowed maximum trajectory smoothing error as constraints, establishing and solving an optimization problem of the smoothing transition length of each Bessel curve; determining maximum speed, acceleration and jerk constraints, and determining the maximum flight speed of transition segments based on the nature of the Bessel function; performing S-shaped motion planning for all linear segments, and determining the acceleration and deceleration time of each linear segment; iteratively searching and planning the flight speed of each segment to ensure the kinematic compatibility; and performing real-time interpolation to complete flight path generation. The flight performance of UAV can be improved greatly under the premise of guaranteeing the calculation efficiency.

The invention belongs to a machining process device of an aerospace product, and in particular discloses a positioning support device used for stirring, rubbing and welding a circular seam of a flange disc of a top cover of a storage box. The machining process device comprises a positioning supporting rotary support, wherein a circular base plate is arranged above the positioning supporting rotary support; an outer pressing ring is arranged above the circular base plate; round holes coaxial with a central hole at the lower bottom surface of the positioning supporting rotary support are arranged in the circular base plate and a center of the outer pressing ring; a central shaft is arranged inside the hole; the lower end of the central shaft is fixed on the positioning supporting rotary support; an outer clamping ring is arranged on the circular base plate; the outer clamping ring is connected with the outer pressing ring through a fastening structure; and a lock wire nut is arranged at the top end of the central shaft. The outer clamping ring, the outer pressing ring and the unique fastening structure have a positioning clamping function to a whole welding product; the outer clamping ring and the central shaft are concentric so as to have a function of positioning a rotation center; a design of the fastening structure has a transition function to connection of a whole positioning support device in a mode that bearing outer pressure is converted into a clamping force, and thus the machining process device is applicable to requirements on high precision in welding and assembling.

The invention discloses a method for compiling three-dimensional human skeleton motion based on motion capture data. The method comprises the following steps of: analyzing and judging a similarity of the states of connecting points of segments to be moved and judging whether a transition motion segment is to be added; after eliminating a relative position difference between the motion segments, linking a plurality of motion material segments into a new motion segment meeting the requirement; when jumps are generated due to the inconsistence of the beginning and the end motion gestures of the motion segments in the linking process, making the transition at the joints among the segments smooth and natural by using a transition function at jump positions; when a sliding phenomenon occurs in the motion due to the use of the transition function, breaking apart a fixed skeleton model hierarchical structure and rebuilding at the moment, and eliminating the sliding by using a reverse kinematic principle, wherein the newly built skeleton model hierarchical structure is also applied to adjustment of a motion orientation of a role model as required at the same time; and finally, carrying out a combined compiling on different types of motions so as to greatly expand richness and diversity of the generated new motion types.

The invention discloses an electrical prospecting method and a measuring device. The method comprises the following steps of: transmitting a current waveform serving as an excitation signal with pseudo-random code characteristics to the underground through a transmitter; receiving a voltage signal generated by the excitation signal through a receiver; mathematically processing to obtain a pulse transition function; obtaining an amplitude-frequency curve and a phase frequency curve in a corresponding frequency range through fast Fourier transform; obtaining an amplitude value and a phase value of each frequency point; and obtaining apparent resistivity and phase parameters with geophysical meaning through the parameters. The device comprises a transmitter consisting of a computer, a programmable logic device, a transmitter clock synchronization circuit, a logic sequence generator, a self-sampling processing circuit, a direct current power supply, a drive and protection circuit, a self-sampling filtering circuit and a power supply electrode AB, and a receiver consisting of a filtering and protecting circuit, an amplifying and analog / digital sampling circuit, a programmable logic device and a computer. The device has good anti-interference performance, can perform effective measurement at low power and can be matched with a plurality of sets of equipment to perform measurement simultaneously.

Disclosed is a rock true triaxial pressure chamber. Four self-balance pistons which are arranged crosswise are disposed on a wall of the chamber. Each piston has a pressure cavity and a backpressure cavity, wherein the pressure cavity is attached to the pressure chamber through an external oil-way provided with a one-way valve; and the backpressure cavity is respectively attached to the atmosphere and a hand pump for transposition through a pipeline and the one-way valve. The self-balance pistons are provided with a pressure control system which reliefs pressure of the external oil-way of the piston's pressure cavity through the hand pump. An EDC controller receives feedback signals of a pressure transducer and a force transducer and outputs a control command to a Moog servo valve. According to the command, the servo valve controls the external oil-way for oil supply of an actuator and adjusts the pressure on the pistons. The advantage of original two-hardness one-softness true triaxial pressure chamber is maintained in the invention. On this basis, a self-balance to non-self-balance transition function is added in the true triaxial pressure chamber provided by the invention, thus making up the insufficiency that the original true triaxial pressure chamber can only unload hydrostatic pressure and realizing unloading of complete stress path.

This invention relates to a kind programmable controller numerical control cycle voltage falling simulative generator, its character is that, it is compose of industry man-machine interface touch screen, programmable controller, step motor drive, step motor, auto-transformer, zero cross sample circuit, AC-DC voltage inverter, IGBT voltage control circuit, the industry man-machine interface touch screen connects the programmable controller, the programmable controller links with zero cross sample circuit, the step motor drive, AC-DC voltage inverter, IGBT voltage control circuit separately, the AC-DC voltage inverter links with the auto-transformer and the IGBT voltage control circuit separately, the step motor drive links with the auto-transformer by step motor. The merits of this invention is that it uses the new programmable controller (PLC) with A / D transition function, realizes the control to the cycle voltage falling simulative amount which meet the related standard request. The anti-interference of this invention is good, the reliability is high, and it is easy to update the software following the emendation of related test standard.

A method controls a vapor compression system including a variable speed compressor. A desired discharge temperature of the compressor is determined using a mapping between values of the discharge temperature of the compressor and values of speed of the compressor and outdoor air temperature. A transition function for transitioning a current discharge temperature to the desired discharge temperature is determined, such that the transition function is continuous and a rate of change of the transition function is limited. Next, a valve of the vapor compression system is controlled such that the discharge temperature is transitioned to the desired discharge temperature based on the transition function.

The invention discloses a method and a device for establishing a pattern matching state machine and pattern recognition, belonging to the technical field of pattern matching. The used method comprises the following steps: obtaining divided keyword subfields; generating a state transition Goto function according to the keyword subfields; generating Failure functions of various state nodes according to the Goto function; and generating a next-jump state transition delta function of the state nodes according to the Goto functions and the Failure functions and matching mode states according to the generated delta fucntion. The device comprises an obtaining module, a Goto function generating module, a Failure function generating module and a delta function generating module. The invention eliminates an original Failure chain in a multi-byte AC algorithm, converts the original Failure chain together with an original Goto function into the uniform delta transition function and does not generate list items possible to cause Failure initial states in the process of transforming the Failure chain so as to avoid increasing large-scale storage space, optimize the storage structure of the AC algorithm and improve the treatment speed of the AC algorithm.

Provides method and systems to simplify processing and improve processing speed for validation of an XML document. In an example embodiment, a non-deterministic automaton is generated by a binary tree automaton generation module from a document type definition described by hedge grammar. Furthermore, a deterministic binary tree automaton is generated by a determination module, and a deterministic binary tree automaton of which transition function δ is minimized by a minimization module is generated. This minimum deterministic binary tree automaton is used to validate an XML document with a validation module. When the XML document is normally accepted by the binary tree automaton, validation results wherein the XML document is reasonable are outputted.

A design tool can implement phase algebra based design evaluation to efficiently evaluate a circuit design with a compact representation of numerous waveforms without simulating the individual waveforms. Instead of individual waveforms, the phase algebra based design evaluation employs compact representations of a group or set of waveforms. Phase algebra based evaluation constructs representations of a set of waveforms based on relationships among a devised set of functions that account for the various states of a signal over time, including transitions and glitches. A memorized-transition function, referred to herein as an M-function, indicates signal transitions over time.

A method, system and computer program product for efficiently utilizing a heat-pump based HVAC system with an auxiliary heating system. Possible actions (e.g., cooling, off, heat-pump heating and auxiliary heating) are selected over a period of time (e.g., three days). The effects of selecting actions are recorded in terms of a data set of tuples. A regression is fitted to model a transition function separately for each of the possible actions using the data set of tuples. A model is selected to fit a regression using regression features (e.g., historic indoor temperatures). An action (e.g., off) to take is determined using a lookahead planning approach during a don't care period (period of time occupants do not care about the inside temperature) for every time-step within the don't care period until an end of the don't care period, where the effects of the actions continue to be recorded.

A method of transitioning from a complex response flight state to a ground operation control state. Pilot intent is determined through collective position information to control the transition. An independent cockpit switch activates an emergency surface contact transition function for use with a fly-by-wire (FBW) flight control system. Once the surface contact transition function is active, FBW control laws transition from a fully augmented flight state, through an augmentation deactivation state and into the surface contact state.

The invention belongs to the technical field of nondestructive detection, and relates to an automatic scanning-based cellular core sandwich structure ultrasonic imaging detection method. The method is characterized in that defect discrimination and ultrasonic imaging are carried out through establishing corresponding transition functions by using the reflection echo signals of incident pulse ultrasonic waves with different wavelengths in a sheath / cellular core connecting layer, a cellular core connecting layer / cellular wall and a cellular core connecting layer / cellular grid interface. Ultrasonic automatic scanning imaging detection of different cemented and welded cellular core sandwich structures is realized through selecting different incident pulse ultrasonic wave frequencies, an energy transducer and an acoustic beam diameter thereof, scanning stepping, acoustics coupling modes and ultrasonic automatic scanning devices. A practical detection effect shows that the method greatly improves the detection sensitivity and resolution and the detection ability of a cellular core structure, allows defects and combination conditions between the sheath / cellular core, the sheath / connecting layer and the connecting layer / cellular grid, and greatly improves the detection reliability.

The invention discloses an FSA based voice emotion interaction device and method. The interaction device comprises a voice collection module, a voice emotion identification module and a voice emotion interaction module, wherein the voice collection module sets a record source, the sampling rate, an audio channel and the audio data format, and then writes raw data in an original file to generate a file A; the voice emotion identification module identifies the voice emotion of the file A; and the voice emotion interaction module makes emotion interaction via an emotion carrier. The voice emotion interaction module comprises an establishment module of an FSA model, an establishment module of an emotion interaction state transition table and a transition torque module, wherein the establishment module of the FSA model uses an FSA to describe voice emotion state and transition process thereof; the establishment module of the emotion interaction state transition table defines and determines transition function of the FSA; and the transition matrix module uses a state transition matrix to describe the state transition function in the FSA model.

The invention relates to a device for measuring transition function of a slide valve type pneumatic reversing valve, and belongs to the fields of industrial automation and system technology. The connection relationship is that: a stepping motor is fixed on the left side of a tool platform and is fixedly connected with the left end of a leading screw; a leading screw nut is arranged at the right end of the leading screw and is in contact connection with a linear guide rail 4 fixed on the tool platform through one end of a read head; the other end of the read head is in contact connection with a displacement sensor; the leading screw nut is connected with a tested valve body through a tested valve core; gas ports corresponding to the port 1 and the port 2 of the tested valve body are formed on the tool platform contacted with the bottom surface of the tested valve body; pressure sensors of the port 1 and the port 3 are arranged below the tool platform; a stop valve is arranged at the lower end of each pressure sensor; the top surface of the tested valve body is in contact connection with a plugging mechanism; the plugging mechanism is fixedly connected with a plugging cylinder through a piston rod of the plugging cylinder; and a gas source is arranged in the tool platform. The device can acquire the transition function of the tested valve precisely and efficiently and has a wide application range.

This invention relates to a variable speed drive with synchronous AC motor. In the disclosed embodiment, a variable speed drive operates in three modes: a first predetermined mode, in which a function (e.g., trapezoidal current waveform) controls operation at low motor speeds; a transitional mode, in which a transition function is applied to anticipate transitions of the first function, thus causing a smoothing of transitions at higher speeds; and a second predetermined (e.g., sinusoidal or smoothly-varying current) waveform at high speeds. This allows for the reduction in required rotor position sensor resolution as compared to conventional synchronous variable speed drives, resulting in cost savings in the sensor device and associated wiring. Additionally, it is quieter and more efficient operation at high speed as compared to conventional trapezoidal-current / DC-brushless motor drives.

An ophthalmic imaging apparatus having an automatic transition function for transiting from an anterior ocular observation state to a fundus observation state, an autofocus function performed during fundus observation, and an automatic image capturing function performed when fundus alignment is complete, the apparatus comprising: a first control unit configured to control the automatic transition function, the autofocus function, and the automatic image capturing function to be deactivated in response to a first user operation; and a second control unit configured to control the deactivated automatic transition function, autofocus function, and automatic image capturing function to be reactivated in response to a second user operation.

This invention relates to a variable speed drive with synchronous AC motor. In the disclosed embodiment, a variable speed drive operates in three modes: a first predetermined mode, in which a function (e.g., trapezoidal current waveform) controls operation at low motor speeds; a transitional mode, in which a transition function is applied to anticipate transitions of the first function, thus causing a smoothing of transitions at higher speeds; and a second predetermined (e.g., sinusoidal or smoothly-varying current) waveform at high speeds. This allows for the reduction in required rotor position sensor resolution as compared to conventional synchronous variable speed drives, resulting in cost savings in the sensor device and associated wiring. Additionally, it is quieter and more efficient operation at high speed as compared to conventional trapezoidal-current / DC-brushless motor drives.

The invention discloses an analysis method of carrying out paralleling reactor optimization configuration on an offshore wind power plant outgoing line terminal submarine cable. In the method, optimization configuration theory calculation of paralleling reactors is performed on an offshore-wind-power-plant no-load submarine-cable long line and two ports of an offshore booster station system component are networked so as to acquire a transition function of a no-load long line tail terminal voltage to a power-supply electromotive force. Mathematical analysis is performed on the transition function, different paralleling reactor configuration schemes are compared so that an effect of carrying out charging power reactive compensation on the no-load submarine cable long line tail terminal paralleling reactors is the best, an effect of carrying out reactive compensation on the paralleling reactor of two ends of the submarine cable simultaneously comes second and an effect of carrying out reactive compensation on a head terminal of the submarine cable is worst. Finally, analogue simulation verification is performed; electromagnetic transient analysis software PSCAD is used to establish a model and the no-load submarine cable under different paralleling reactor configuration schemes is operated in a simulation mode; compensation effects are compared and theory calculation correctness is verified.

A system and method for automatically upgrading / reverting of the software configurations in a storage system environment among a plurality of product release lines. A configuration upgrade / revert module of a storage system management module identifies a shortest path between an initial configuration and a desired end configuration using a transition table comprising of a plurality of transition functions. The upgrade / revert configuration module invokes the appropriate series of transition functions to modify the software configuration from the initial state to the desired end state.

The invention relates to a transition shuttle device, comprising a supporting frame (1). The transition shuttle device is characterized in that a transverse front support (2) and a rear support (3) are connected with the supporting frame via a rotary supporting shaft (4); two steering devices are arranged outside the front support and the rear support; two travelling wheels (5) driven by a travelling motor (7) are symmetrically arranged at two ends; each steering device comprises two fixed guide wheels (6) arranged on two sides of each travelling wheel, a rotary disk (15) arranged on a base and driven by a steering motor (9) to rotate along an axis (16), two link mechanisms (13, 14) hinged with the rotary disk, and two tumblers (11, 12) hinged at two ends of the link mechanism; one end of the tumbler is arranged on a stationary shaft (17), while a movable guide wheel (10) is arranged at the other end. The transition shuttle device has the advantages of steering and transition function, capability of automatically freely driving on the straight track and curved track, simple structure, reliability, and small volume.