83 results about "Internal mode" patented technology

The invention provides a design method for an IMC-PID (Internal Mode Control-Proportion Integration Differentiation) controller of a non-square time delay system, and relates to the field of industrial process control. The design method comprises the following steps of: converting the control problem of the non-square system into the control of a series of independent loops due to the thinking of effective open-loop transfer functions, and designing the IMC-PID controller capable of being used for the actual field in combination with a design method of an inner die controller and a numerical search algorithm. The design method has the advantages that (1) an equivalent model is used, so that the complex computation such as first decoupling and second designing can be avoided; (2) the parameter values of the PID of the non-square system can be directly searched by the search algorithm, so that the design method is simple in computation process; (3) the input/output at two ends of the controller is sampled due to a non-square multi-given data acquisition method; and (4) the novel incremental IMC-PID controller in the form of incomplete differential PID is adopted, so that the calculated quantity of full quantity accumulation can be observably reduced, and the adaptability of the anti-interference performance and the actual working condition can be improved.

The invention proposes a fault-tolerant field-oriented control method of five-phase interior permanent-magnet fault-tolerant linear motor (IPM-FTLM) with two nonadjacent short-circuit phase faults. Firstly, the extended Clark transformation matrix can be obtained according to the principle that magnetic motive force (MMF) keeps constant before and after the two-phase open-circuit faults, the constraint that the sum of healthy phase currents is zero and the adjacent two-phase current amplitude is equal. The back electric motive force (EMF) can be estimated by the transposed matrix. The nonlinear strong coupling system becomes the first-order inertia system when using the internal mode controller, the first-order inertia feed-forward voltage compensator and back-EMF observer, as the motor is with fault. Then, according to the principle that the sum of MMF of the healthy phase short-circuit compensation currents and two phases short-circuit fault currents is zero, the short-circuit compensation voltage can be obtained, and then these voltages add vector-controller output voltages, respectively. The invention not only restrains the thrust force fluctuation caused by two nonadjacent short-circuit phase faults, but also more importantly keeps the same dynamic and steady performance as the normal conditions, and also it has the constant switching frequency of voltage source inverter.

The invention discloses an internal-mode fault-tolerant control system and method for a support vector machine of a permanent-magnet synchronous linear motor. The system includes a fault-tolerant controller, a first PI (Proportional Integral) regulator, a second PI regulator, a Park inverse transformation module, a Clark inverse transformation module, an inverter, a magnetic flux linkage observation and switch module, a position detection module, a speed detection module and a six-phase permanent-magnet synchronous linear motor, wherein the fault-tolerant controller includes a normal internal-mode controller and a faulted internal-mode controller; the normal internal-mode controller consists of a normal controller and a support vector machine with a normal nominal model; and the faulted internal-mode controller consists of a faulted controller and a support vector machine with a faulted nominal model. The method comprises the following steps: when the six-phase permanent-magnet synchronous linear motor is fault-free, the magnetic flux linkage observation and switch module selects the support vector machine with the normal nominal model and the normal controller; and when a single-phase open-circuit fault occurs in the six-phase permanent-magnet synchronous linear motor, the magnetic flux linkage observation and switch module selects the support vector machine with the faulted nominal model and the fault controller.

The invention discloses a control method for grid-connected current of a three-phase grid-connected inverter, improves the defects of the conventional repetitive control through two disturbance factors of suppressing inverter harmonic generation and resisting power network fluctuation, aims at the problems that the conventional repetitive controller cannot process the aperiodic harmonic and is easily affected by the power network frequency fluctuation based on a principle of adopting last periodic quantity to carry out iteration to cause system instability, provides a multi-target repetitive controller and designs from four aspects of a PI parameter, an internal mode coefficient, a repetitive control coefficient and fractional order phase correction, so that the tracking precision of the grid-connected current about a reference signal is enhanced, the ability of a system to resist power network frequency fluctuation is improved and the steady-state performance of the system is guaranteed.

The invention discloses a permanent magnet synchronous motor speed control system and method for an electric vehicle. The method comprises the steps of obtaining a q-axis desired current according to a designed fuzzy adaptive sliding-mode speed controller, and setting the d-axis reference current as 0; according to a disturbance value feedback compensation observed by a designed disturbance extended state observer, using the q-axis current output from the fuzzy adaptive sliding-mode speed controller as the q-axis input of a dq-axis internal mode current controller; using the difference of a d-axis feedback current value and the given d-axis current value 0 as the d-axis input of the dq-axis internal mode current controller; obtaining ud and uq after the processing by the dq-axis internal mode current controller, and finally outputting the driving voltage currently operated by the permanent magnet synchronous motor through the vector-controlled inverse park conversion, the SVPWM and an inverter. The method increases the response speed and the anti-disturbance performance of the permanent magnet synchronous motor for the electric vehicle, avoids an overshoot phenomenon, reduces system buffeting, and enhances system robustness.

The embodiment of the invention discloses an ether port auto-negotiation and network communication equipment. According to a port mode list arranged in advance, from a first port mode, an ether port chip A of a first communication equipment begins to establish a link by the auto-negotiation method of the present port mode and an ether port chip B; if the establishment is failure, the link is switched to a next port mode in the port mode list, until the link is successfully established by the auto-negotiation method of the present port mode and the ether port chip B, and the present port mode is determined as the port mode of the ether port chip B. Consequently, the physical port of the ether port chip A is controlled by switching different port modes for carrying out auto-negotiation with the opposite terminal port, and the invention can fully perform the chip characteristics for supporting multiport modes, enhance interconnection between internal modes of the equipment and boards, improve flexibility of interconnection between equipments, and avoid complexity and cost of software forced arrangement, and avoid trouble of manually operation, and simplify the arrangement of equipment.

An integrated high-frequency generator system utilizing the magnetic field of the target application including a magnetic resonance magnet having an application zone and a high-frequency (microwave/terahertz) generator zone in the magnetic field of the magnetic resonance magnet; and a high-frequency (microwave/terahertz) generator disposed in the high-frequency (microwave/terahertz) generator zone and utilizing the magnet field of the magnetic resonance magnet to generate the high-frequency (microwave/terahertz) radiation. The magnetic resonance magnet may have an auxiliary magnetic field source for modifying the magnetic field profile in the high-frequency (microwave/terahertz) generator zone. The high-frequency (microwave/terahertz) generator may include an electron gun for generating an electron beam adapted to be focused by a magnetic field source having a spatially rising region, a homogenous region and a decaying region, an interaction structure for generating high-frequency (microwave/terahertz) radiation, an internal mode converter in the homogenous region for extracting the high-frequency (microwave/terahertz) radiation through a window, and a reduced collector disposed substantially in the homogenous region before the electron beam spreads in the decaying region.

The present invention provides an electronic device and a camera module. The camera module comprises a lens group, an image sensor and an infrared cut filter. The image sensor and the infrared cut filter are arranged at two sides of the lens group. Through changing the infrared cut filter to an external mode from an internal mode, while red light is eliminated, the rear focal length of the lens group can be reduced significantly, thus the overall height of the lens group is reduced, the thin structure design of the electronic device is facilitated, and the use experience of the electronic device of the user is improved.

The invention provides a three-dimensional video coding depth map internal mode selection method based on edge complexity. The method is characterized by, to begin with, carrying out calculation on a divided depth map prediction unit through an edge detection operator on the basis of 3D-HEVC software; if the number of edge points of the current prediction unit is larger than a certain threshold value, judging the PU block has an edge; summarizing edge directions of edge pixel points under the condition that the PU block has the edge, and dividing the edge directions theta (i,j) into four directions; if the number mu of the summarized directions of the prediction unit meets mu belongs to [0,2), adding an intra-Wedge mode to a mode candidate list; if mu belongs to [2,4], adding an intra-Contour mode to the candidate list; if the number of the edge points is smaller than the threshold value, not adding a depth map internal encoding mode DMM to the mode candidate list. The method saves coding calculation amount and time under the condition of ensuring coding quality, and quickly determines 3D-HEVC depth map internal encoding mode.

The invention provides a method for sequencing keywords based on the entropy difference between a word-spacing-appearing internal mode and an external mode and belongs to the field of character information processing. According to the method, the condition that the appearance of the keywords is affected by two modes, namely an internal mode (1) and an external mode (2), is believed, the internal mode (1) is used for describing the statistical properties of positions of the keywords in a topic, and the external mode (2) is used for describing the statistical attributes for the appearance of topic clusters in a text. Found through results of experiments on real texts, the greater the information entropy difference between the word-spacing-appearing internal mode and the external mode, the greater the probability that the word is a keyword.

A method of determining an internal operating mode of an electronic circuit derives multiple comparison rates from a rate of a master clock input, computes one or more clock ratios of the comparison rates to a rate of a sample rate clock input, and determines whether any of the clock ratios is a valid ratio representing a supported clock configuration. The appropriate internal operating mode is then selected based on the valid ratio. In the illustrative embodiment, a clock autodetect unit uses two trip frequencies to derive at least first and second clock comparison rates. The audio converter can operate in three distinct modes (base, high and quad modes). The base mode is selected when the clock ratio is about 256, the high mode is selected when the clock ratio is about 128, and the quad mode is selected when the clock ratio is about 64. A multiplexer can be used to sequence through the computer clock ratios to ensure that a highest valid ratio is used among a plurality of valid ratios.

The invention relates to the field of control science and engineering, especially an intermittent process monitoring data processing method. The method comprises the following steps: a, employing an improved affine propagation clustering algorithm; b, designing a similarity decreasing scanning algorithm; c, determining outliers and wrong classification points, and respectively designing solutions.The improved affine propagation clustering algorithm can reveals a mode switching process between all subperiods of an intermittent process more accurately, and the similarity decreasing scanning algorithm can further reflect the change trend of the internal mode of each subperiod with time. The method for determining the outliers and wrong classification points and respectively designing solutions improves the statistical modeling accuracy, is small in algorithm scale, is simple in calculation, and is easy for engineering implementation.

The invention provides a multi-station flexible clamping device and a multi-station flexible clamping method. The multi-station flexible clamping device comprises an upper-layer large turntable (10), small turntable power assemblies (20), a lower-layer small turntable (30), a motor flange (40) and a gear motor (50), wherein the upper-layer large turntable (10) realizes the transportation of clamped inner boxes, the small turntable power assemblies (20) realize the adjustment on the height and the angle of the lower-layer small turntable (30) at two positions, the lower-layer small turntable (30) realizes flexible clamping for the inner boxes, an the gear motor (50) drives the upper-layer large turntable (10) to rotate. With the adoption of the method, the accurate clamping mode in the case of no internal mode state of the inner boxes is provided, the complex line production of the box body processing becomes possible, the production efficiency is improved, meanwhile, the double-layer-turntable external drive mode is realized, and therefore, the device and the method have great significances for structure simplification and energy conservation and consumption reduction.

The invention discloses a sliding plate type internal mold plate of a thin-wall hollow pier with a variable section and an installation method of the internal mold plate. The internal mold plate adopts a full steel mold plate, by means of a mode of built-in of a sliding plate and an adjusting mode in the steel mold plate with the variable section, the width and dimension of the variable section ofthe thin-wall hollow pier are adjusted to form an all-steel internal mode of the thin-wall hollow pier with the variable section. According to the installation method of the internal mold plate, theprocess is easy and convenient, the construction period can be effectively shortened and input of the labor and machinery is effectively reduced. According to the sliding plate type internal mold plate of the thin-wall hollow pier with the variable section, on the premise of satisfying the requirements of high quality construction, the problems of frequent cutting of the mold plate and poor appearance quality of concrete are solved, real work is well underway, meanwhile engineering quality safety is ensured, the working efficiency is improved, and the high market promotion value is achieved.

The invention discloses a multi-wavelength external cavity laser for a non-fluorescence raman spectrometer. More than two laser diodes with equal central wavelengths in an array are driven to be independently opened and closed through a power supply switching circuit; output light beams are calibrated into parallel collimated laser beams through a collimating laser calibration optical element; a special design is adopted by a grating; different grating periods are set for incident point regions, corresponding to the collimated laser beams, of the grating; the collimated laser beams form zero-order reflected beams and first-order diffracted beams after being diffracted by the grating; the zero-order reflected beams are output in the same direction and have a wavelength difference; the first-order diffracted beams return to the inside of the corresponding laser diodes along the original path to participate in internal mode competition of a resonant cavity; and the zero-order reflected beams are converged into an optical fiber combiner through an optical fiber coupling lens for wavelength output. The wavelength output is switched by the circuit, so that the unreliability and the possible error of conventional mechanical adjustment are eliminated; a tuning structure is relatively simple and stable; high stability of output wavelengths is ensured; the wavelength output repeatability in actual operation is high; and the tuning accuracy is relatively high.

The invention provides a four-wavelength output semiconductor laser device and a preparation method thereof. The laser device is a near-infrared edge-emitting laser device. An existing upper and lower limiting layer structure is replaced with upper and lower DBR bands; and a defect layer is inserted into one-dimensional photonic crystal, so that the effect of limiting light in a photonic band gap on the defect layer is achieved. The four-wavelength output semiconductor laser device specifically comprises a GaAs substrate, a lower DBR layer, a lower matching layer, a lower waveguide layer, an active layer, an upper waveguide layer, an upper matching layer, an upper DBR layer, a contact layer, an insulating layer and a P-type electrode, wherein the upper DBR layer and the contact layer are etched to form a ridge waveguide and a dual-electrode structure. Output of four different wavelengths can be obtained through internal mode matching of the semiconductor laser device; the effects of tuning the wavelength of the laser device and converting the working state of the laser device can be obtained through controlling one terminal electrode; and the device based on the structure simultaneously obtains continuous pulse output of 1.069 microns, 1.353 microns, 1.77 microns and 2.71 microns.

The present invention relates to a construction method of a mode-division multiplexing fiber-optic communication system, which includes following contents: converting multiple-input optical signals into optical propagation modes supported by a graded-index ring-core optical fiber at a transmitting end, after being multiplexed by a mode multiplexer, injecting the optical signals into the graded-index ring-core optical fiber for transmission; using a mode de-multiplexer to separate optical signals of different mode groups at a receiving end firstly; and for the separation of internal modes of the same mode group, adopting a multi-channel reception and a digital signal processing method based on a multiple-input multiple-output equalization for processing: for the separation of modes in a base mode group and a high-order mode group, using a digital signal processing algorithm including a 2×2 multiple-input multiple-output equalization and a digital signal processing algorithm including a 4×4 multiple-input multiple-output equalization for recovery processing, respectively. The method according to the present invention only needs to add an optical receiver and a digital signal processing module based on the 4×4 multiple-input multiple-output equalization repeatedly while adding the mode group to expand communication capacity. Compared with the prior art, the present invention has the characteristics of low complexity, high scalability and easy upgrading.

Systems and methods for external access detection and recovery in a subsystem of a system-on-a-chip (SoC) in a portable computing device (PCD) are presented. In operation, a subsystem of the SoC is operated in an internal mode independently of the SoC while the SoC is in a low power state, such as a non-functional or zero power state or mode. The subsystem comprises a processor in communication with a memory, a sensor, and a monitor module. The monitor module detects when the processor of the subsystem requests access to a component external to the subsystem. In response to this detected request, the SoC is caused to enter into a full power state or mode, and the subsystem is caused to exit the internal mode of operation.

A gear selector assembly for selecting a gear position of a transmission includes an internal mode switch having detent lever, a plurality of magnetic field sensors, a control module, a first power supply and a second power supply. The detent lever has a plurality of detents and a magnetized track, where the magnetized track includes a plurality of magnetized elements that are indicative a particular gear selector position. The magnetic field sensors are associated with each of the magnetized elements for sensing changes in a magnetic field of the magnetized track. The control module is in communication with each of the field sensors. Each of the field sensors sends an output current to the control module and the value of the output current is variable. The value of the output current is indicative of at least one of the following: the direction of the magnetic field from the corresponding magnetic track, a short circuit, and an open circuit.

The invention discloses an adjacent region configuration method and device. The adjacent region configuration method comprises the steps of, by a base station, receiving capability information reported by UE (User Equipment); if the base station judges that the UE supports switching in a single mode of an LTE system based on the capability information reported by the UE, judging whether the UE supports switching of internal modes of the LTE system based on the capability information reported by the UE; and if not, only sending adjacent region configuration information in the current working mode of the UE to the UE. According to the adjacent region configuration method and device, the capability of the UE for switching frequency division duplex and time division duplex can be obtained exactly, only efficient adjacent region configuration information is sent to the UE, the number of adjacent regions measured by the UE is reduced, the time taken for measurement and reporting is shortened, the electric quantity is saved, the switching speed of a user is speeded up, the signaling loads at the UE side and a base station side are reduced, and the user experience perception is improved.

The present invention provides a method, an apparatus, and a computer program product for applying external clock and data patterns for TTP-LBIST. A simulation model for the logic under test is set up in a simulator. Next, a user sets up an external LBIST block, which comprises pre-verified internal clock and data pattern logic, and connects this block to the logic in the simulation model. The internal clock and data pattern logic provides the input patterns used in OCPG modes of LBIST. This internal clock and data pattern logic is already verified through the design effort. Therefore, the internal pattern generators become the external pattern generators in the simulation model. The external LBIST block applies the external clock and data patterns, and subsequently, the user receives and processes these output patterns to determine if the logic operates correctly.

The invention discloses a method for manufacturing a connector of an HDMI, which includes the following steps: (1) providing a plug body which has a butt joint part on the front end and a plurality of conductive terminals passing through the butt joint part and revealing on the back end, (2) connecting a revealing end of each conductive terminal with a lead, (3) forming an internal mode with a lead groove and a lamp holding hole on the back end of the plug body, and extending all the leads through the lead groove, (4)connecting two leads thereof with an indicating lamp, (5) folding back the two leads along the lead groove, and placing the indication lamp inside the lamp holding hole, (6) providing and extending the remained leads through a flexible output tube and (7) providing a shell body for wrapping the back end of the plug body, the internal mode, the indicating lamp and a front end of the flexible output tube. The connector manufactured with the method provided by the invention presents convenient assembly and disassembly, compact structure, reasonable layout, convenient maintenance and capability of saving labor force and time in great quantity.