1212 results about "Current cycle" patented technology

A circuit is disclosed which minimizes the amount of tissue vaporized during a first half (positive half cycle) of an electrosurgical current cycle and minimizes the amount of current applied to tissue during a second half (negative half cycle) of the electrosurgical current cycle to control thermal spread. The circuit is preferably provided within an electrosurgical generator which is capable of controlling the amount of energy delivered to a patient during electrosurgery on a per arc basis.

Methods, devices and test kits for monitoring the ovulation cycle, involve testing the body fluid, e.g. urinary, concentration of one or more analytes. Preferably estrone-3-glucuronide and luteinizing hormone are both measured, and a reference concentration for E3G is established at about day 6 of the current cycle. Preferably, disposable testing devices are used, in conjunction with a relatively permanent electronic reader / monitor. The number of "daily" tests required per month can be minimized.

An object recognition system comprises a memory for storing a plurality of distance ranges with different distance labels associated with respective distance ranges. The controller converts measured distance values into distance labels according to distance ranges to which the distance values belong. The controller groups the sections or windows of a captured image based on assigned distance labels. Detection area or viewing area of the sensors is divided into a plurality of distance ranges according to tolerance of the measured distance such that broader distance range is defined as the distance from the system is larger. The controller scans the windows with distance labels using a template that defines a joining relationship for the windows and assigns each window with a cluster label that is a combination of the distance label and a occurrence indicia, which is the same for the windows that satisfy the joining relationship. The controller unites the windows having the same cluster labels into a cluster, generates three dimensional data of each of said clusters and combines the clusters that are positioned close to each other based on the three dimensional data to form a candidate of a physical object. The system includes a memory for storing three dimensional data of one or more physical objects that were recognized in previous recognition cycle. The controller infers a physical object which would be recognized in the current cycle based on the stored data and a speed of the vehicle relative to the physical object. The controller compares the inferred physical object with said candidate of a physical object to recognize a physical object.

The invention provides an air conditioner defrosting control method and an air conditioner. The method comprises the following step: after the current defrosting operation period of the air conditioner finishes, calculating and determining the heating operation time and defrosting time of the air conditioner of the next period on the basis of the indoor coil pipe temperature drop rate: when the indoor coil pipe temperature drop rate is high, controlling the heating operation time of the air conditioner of the next period to be less than or equal to the heating operation time of the air conditioner of the current period, and controlling the defrosting time of the next period to be greater than the defrosting time of the current period; and when the indoor coil pipe temperature drop rate is low, controlling the heating operation time of the air conditioner of the next period to be greater than the heating operation time of the air conditioner of the current period, and controlling the defrosting time of the next period to be less than or equal to the defrosting time of the current period. The heating operation time and defrosting time of the air conditioner of the next period are adjusted on the basis of the indoor coil pipe temperature drop rate when the operation of the current period finishes, thereby implementing dynamic adjustment on the heating and defrosting, and solving the technical problem of unclean defrosting or false defrosting when the defrosting is controlled on the basis of the indoor coil pipe temperature.

A circuit is disclosed which minimizes the amount of tissue vaporized during a first half (positive half cycle) of an electrosurgical current cycle and minimizes the amount of current applied to tissue during a second half (negative half cycle) of the electrosurgical current cycle to control thermal spread. The circuit is preferably provided within an electrosurgical generator which is capable of controlling the amount of energy delivered to a patient during electrosurgery on a per arc basis.

A control system for an electric machine having a rotor position sensor that generates a rotor position signal, a velocity module that generates an electric angular velocity value based on the rotor position signal, a random pulse width modulation module that generates a switching period and a delay for a current cycle, and a phase angle compensation module that sums a sample rate, one half of the switching period, and the delay of a previous cycle and that outputs a delay time. The phase angle compensation module further multiplies the delay time and the electric angular velocity value and generates a compensating angle.

A method of designing a series of waveforms for current cycles generated by a waveform generator to control the waveforms of a welding process performed by an electric arc welder, where the waveforms are stored in a memory stack by work points. The method comprises: integrating the arc current of the waveform designed for each of the many work points to obtain an integrated amount; plotting the integrated amounts for each of the work points; creating a regression curve statistically matching the plotted amounts to reveal outlier amounts; selecting an outlier amount; and, changing the waveform corresponding to the selected outlier amount to decrease the deviation of the integrated amount of the changed waveform from the regression curve.

A multiobjective management system for saturated traffic road networks comprising: green wave coordination of locally adaptive traffic control units, traffic movement optimization and live traffic route guidance. Current traffic congestion measurements on intersections are generated from local traffic cameras and remote air-borne conventional cameras and thermal sensing imaging cameras or satellite radar such as SAR / ISAR using optical image brightness analysis. At the first stage of traffic optimization, individual local intersection green times are computed based on current traffic congestion level. At the second stage optimization, the central traffic server uses a multiobjective approach to coordinate the current locally-optimized green times of the first stage and create input constraints for green-way coordination of plurality of traffic lights. The server updates dynamically current cycle start and green times on all network-connected traffic light controllers and also broadcasts recommended travel times, green times and green waves to all on-line client vehicle navigation units. Traffic server and individual client guidance units utilize novel time-dependent modifications of an A*-type algorithm to update current travel and recommended travel times and to execute fastest route searches.

A regression-based residual echo suppression (RES) system and process for suppressing the portion of the microphone signal corresponding to a playback of a speaker audio signal that was not suppressed by an acoustic echo canceller (AEC). In general, a prescribed regression technique is used between a prescribed spectral attribute of multiple past and present, fixed-length, periods (e.g., frames) of the speaker signal and the same spectral attribute of a current period (e.g., frame) of the echo residual in the output of the AEC. This automatically takes into consideration the correlation between the time periods of the speaker signal. The parameters of the regression can be easily tracked using adaptive methods. Multiple applications of RES can be used to produce better results and this system and process can be applied to stereo-RES as well.

The invention discloses an adaptive-compensation-based asynchronous motor parameter recognition method, which belongs to the technical field of static parameter recognition of asynchronous motors and solves the problem of low universality of the conventional motor parameter recognition method. The method comprises the following steps of: recognizing stator resistance values of each phase of the motor, testing the motor by using a single-phase AC method to reconstruct the reference input voltage of each phase of the motor, performing Fourier transform on the reconstructed reference input voltage of each phase of the motor in a current cycle, and performing calculation to obtain real parts and virtual parts of fundamental waves of the reference input voltage of each phase of the motor; performing calculation to obtain error voltage between the reference input voltage and actual input voltage of each phase of the motor, and obtaining the real part and virtual part of the fundamental waveof the error voltage; and performing calculation to obtain the leakage inductance, rotor resistance and mutual inductance of each phase of the motor. The method is applied to the parameter recognition of the asynchronous motor.

The invention discloses a method and a device for allocating CPU resources of a virtual machine. The method comprises the following steps of: monitoring operating conditions of all virtual machines in the current period to obtain the monitoring information which at least includes CPU resource utilization rates of all virtual machines in the current period and the throughputs applied to all virtual machines in the current period; according to the monitoring information, performing feedback adjustment on CPU resource request of all virtual machines in the next period by taking the target CPU resource utilization rate of all virtual machines and the target throughputs applied to all virtual machines as a target; according to the CPU resource request of all virtual machines, deciding the CPU resource allocations of all virtual machines in the next period on a virtual machine management control layer; and according to the CPU resource allocations of all virtual machines, allocating CPU resources for all virtual machines. The method adopts a dynamic mode to allocate CPU resources for all virtual machines, so that all virtual machines on one physical node can be coordinated to share the CPU resources.

The invention relates to a method for processing the information of float cars under the structure of a parallel road network, which is mainly applied to the service field of the intelligent dynamic traffic information. The method comprises the steps: step 1, an SVM (Support Vector Machine) sorter is adopted to judge the matching relationship between sampling points and roads, and map match is carried out; step 2, according to map match information, a heuristic route deduction algorithm is adopted to deduce possible running routes of a car, and according to the properties of road chains contained in the routes, whether the car runs in the structure of a parallel road network or not is judged; the shortest running route or a main running route and a subsidiary running route are selectively output in different circumstances, and the reliability of average running speed information provided by the car is estimated; step 3, the D-S (Dempster-Shafer) evidence reasoning theory based on classification is adopted to merge road condition information provided by all the float cars passing by a certain road chain in a current period and consider the reliability of the road condition information in a merging process so as to obtain the mathematical expectations of the average speed and the travel time of the float cars passing by the road chain in the current period. On the basis that the data quality of the prior float cars is kept unchanged, the invention realizes the acquisition of the real-time dynamic traffic information under the structure of a parallel road network.

The invention discloses a NURBS (Non-Uniform Rational B-Splines) tool path speed planning method for five-axis numerical control machining. The method comprises the following steps of: 1, creating synthesized constraints oriented to double NURBS cure tool path route interpolation, synthesizing the constraints to solve a maximum speed and an acceleration of the tool in a moving process, and establishing a synthesized constraint space in a machine tool interpolation process; 2, performing bidirectional speed planning based on window scanning, taking the current speed as basis, scanning forwardsfrom a window start pint to a window tail end in a viable speed domain to obtain a feeding speed of a current period. The method ensures that the path is machined with the highest speed under a condition of meeting the requirements on servo capability and machining performance of the machine tool, and implements a high-quality and high-efficiency machining process.

In a method of recognizing and / or tracking objects which correspond to real objects in at least one sensing zone of at least one sensor for electromagnetic radiation on the basis of images of the sensing zone repeatedly sensed by means of the sensor, succeeding images are evaluated in succeeding cycles and a search is made for at least one respective object found in a cycle on the basis of a corresponding image in a correspondingly later image in a later cycle to track the object. At least one part of an earlier image and / or at least one indication with respect to an earlier state of the object or of a real object corresponding to it, which is determined using a corresponding earlier image in the current cycle, is associated with at least one part of a current image determined in the current cycle or with an object recognized in the current cycle during at least one current cycle on the basis of the results of an at least preliminary evaluation of a current image.

A battery management system includes a monitoring circuit and a charger. The monitoring circuit is operable for monitoring a battery pack that includes a plurality of cells, and for checking an unbalanced condition of the battery pack in each cycle of a plurality of cycles. The charger is operable for controlling a charging current to the battery pack and for receiving monitoring information from the monitoring circuit, and for adjusting the charging current from a first level in a previous cycle to a second level that is lower than the first level in response to a detection of the unbalanced condition in a current cycle.

A method and apparatus to dynamically set the insertion point of a delay line control shift register based on the current cycle time. A string of delay elements equivalent to the delay elements in a delay lock loop (DLL) are laid out in the opposite direction compared to the DLL delay elements. Both strings of delay elements receive a synchronous input signal such as an external clock signal. The output clock signal of the DLL is phase-shifted relative to the external clock signal such that data removed from a device such as a synchronous dynamic random access memory (SDRAM) device is synchronous with the external clock signal. When a DLL reset command is issued, the information from the string of delay elements is captured and used to set the insertion point of the DLL to the locked or phase-equal point. This allows the DLL to quickly lock on any frequency upon reset of the DLL.

The invention discloses a modification method for improving the high-temperature cycle performance and ionic conductance of a lithium iron phosphate material. The method mainly comprises the following steps of: mixing an organic compound which contains silicon, aluminum and titanium with lithium iron phosphate; performing certain heat treatment; and coating silicon dioxide, aluminum oxide or titanium oxide onto the surface of the lithium iron phosphate material to fulfill the aim of improving the electrochemical performance of the lithium iron phosphate material. The high-temperature cycle performance and the high-magnification charging-discharging current cycle capacity of coating-modified lithium iron phosphate are enhanced, and the impedance of a prepared electrode is remarkably reduced. The lithium iron phosphate material can be applied to more fields. A coating method has the advantages of simple process, low cost, stable and controllable product performance and suitability for industrial production.

The invention discloses an output power-based diagnosis method for an open-circuit fault of an insulated gate bipolar transistor (IGBT) of a three-phase inverter. The method comprises the following steps of: A, respectively measuring three-phase voltages and three-phase currents by using a potential transformer (PT) and a current transformer (CT) installed on the output phase in the inverter, and respectively calculating the half-wave power corresponding to six half-wave currents of the three phases of the current period; and B, comparing the six half-wave power values with a set open-circuit fault power threshold value P0, if one or two half-wave power values are less than the set open-circuit fault power threshold value P0, judging that the corresponding IGBT causes an open-circuit fault; or if three half-wave power values are less than the set open-circuit fault power threshold value P0, judging that the IGBTs corresponding to the two half-wave power values on the same side cause the open-circuit fault. By the method, any one or two IGBTs which cause the open-circuit fault can be detected and positioned, so that a controller of the inverter can take a tolerance strategy and reduce waveform distortion conveniently; the inverter can be maintained in time; and the loss enlargement and accidents are avoided effectively.

The present invention discloses a dynamic secondary cooling control method for slab continuous casting based on a double-cooling mode, which comprises the following steps of: collecting casting process data and indexing target cooling temperatures and ABC parameters of each cooling area; dynamically calculating the heat conduction process of a continuously cast slab in the current period according to a heat conduction equation; calculating the temperature tracking error of each cooling area and calculating the water amount of each cooling area in a second cooling mode by taking the temperature tracking error as a regulation factor; respectively calculating the water amount of each cooling area in a first cooling mode based on the ABC parameters and the current casting speed; determining whether the temperature tracking error exceeds a preset threshold and comparing the water amounts in the two modes to determine the cooling mode and the controlled water amount in the current period; and validating the reasonableness of the controlled water amount, and correcting the controlled water amount to be a preset maximum water amount or minimum water amount if the controlled water amount exceeds the preset maximum water amount or minimum water amount. The invention guarantees the quality stability of the cast blank in secondary cooling process.

A circuit to detect a movement of an object provides a threshold selection module or a peak identifier module that uses one or more threshold signals identified prior to a present cycle of magnetic field signal in order to establish a threshold signal used for a present cycle of the magnetic field signal. A method associated with the circuit is also described. The circuit and method can be tailored to store values associated with a least common multiple of a set of possible quantities of detectable features on target objects.

Frequency modulated lasers, LIDAR systems, and methods of controlling laser are disclosed. A laser source emits an optical beam having an optical frequency that changes in response to a signal applied to an input of the laser source. A laser driver that generates the signal applied to the input to cause the optical frequency to vary in accordance with a periodic frequency versus time function. The laser driver generates the signal for a current period of the periodic frequency versus time function based, at least in part, on optical frequency versus time measurements of one or more prior periods of the periodic frequency versus time function.

The invention discloses a method and apparatus for transmission of multimedia data, and belongs to the communication technical field. The method comprises calculating a packet loss rate of multimedia data in a current cycle according to a data packet, transmitted in the current cycle, of the multimedia data and a response message received; improving acquisition parameters of the multimedia data if the packet loss rate is less than a first predetermined threshold value; reducing the acquisition parameters of the multimedia data if the packet loss rate is greater than a second predetermined threshold value which is greater than the first predetermined threshold value; and obtaining the multimedia data according to the adjusted acquisition parameters of the multimedia data, and transmitting the obtained multimedia data to a receiving terminal. According to the invention, the packet loss rate in the current cycle is calculated, the current state of a network is determined according to the relation between the packet loss rate and the predetermined threshold values, and the acquisition parameters of the multimedia data are improved or reduced in real time to adapt to the current state of the network so as to improve the transmission efficiency of the multimedia data.

A cellular phone that provides a display of the minutes used and / or remaining during a current cycle of a category of minutes provided in a calling plan. The display allows the user to immediately know if further use will incur additional fees beyond the monthly base fees. Additionally, A method for monitoring and displaying on a cellular phone the number of minutes used and / or remaining in a cellular phone calling plan. The method comprising the steps of: providing a cellular phone; inputting an initial start time for a repeating time cycle of a calling plan; inputting a time period for the repeating time cycle; providing a designated amount of time for a first category of time in the calling plan for the repeating time cycle; monitoring phone usage of the first category of time; and, displaying an indication of one of an amount of time used of the designated amount of time for the first category of time and an amount of time remaining of the designated amount of time for the first category of time in a current repeating time cycle.

The invention discloses a method for synchronizing the time of a wireless sensor network and belongs to the technical field of the wireless sensor network. The method comprises the following steps that: 1) a central node broadcasts synchronization information to a network at a specific time interval and starts a synchronization process; 2) after receiving the synchronization information, a sensornode synchronizes time with a source node of the synchronization information and broadcasts the synchronization information thereof to the network when a channel is free; and 3) after each synchronization process is completed, the sensor node predicts the working frequency of a crystal oscillator configured per se in the current period by a winters method and corrects the logic time thereof according to the prediction result till the start of the next synchronization process. Compared with the prior art, the method can greatly prolong the time interval of period synchronization and reduce synchronization expense and the occupying of a wireless channel and improve the synchronization precision among nodes.

A circuit to detect a movement of an object provides a threshold selection module that uses one or more threshold signals identified prior to a present cycle of magnetic field signal in order to establish a threshold signal used for a present cycle of the magnetic field signal. A method associated with the circuit is also described.

The invention discloses a node energy consumption balancing method for a wireless sensor network. The method includes the steps of 1, acquiring the distance from each node in the network to a base station; allowing the base station to calculate optimal hop count and optimal cluster number according to the network scale, and allowing each node in the network to calculate the distance from itself to the base station; 2, determining an energy threshold of the current cycle; 3, establishing clusters, namely reserving each candidate cluster head have residual energy larger than the energy threshold as a cluster head, and adding non-cluster-head nodes to different clusters; 4, transmitting stably, namely allowing the nodes in each cluster to transmit data to the cluster head in a single hop manner, and allowing the cluster head to forward the data to the base station in a combined manner of single hop and multiple hops. The node energy consumption balancing method for the wireless sensor network has the advantages that energy consumption is balanced for the nodes and the service life of the network is effectively prolonged.

The invention provides a method and device for detecting the overheat faults of GIS (Gas Insulated Switchgear) busbar joints. The method comprises the following steps of: establishing a function equation according to a relation among the shell temperature value, contact resistance value, load current value and environmental temperature value of a GIS busbar joint under typical bad contact conditions; carrying out regular polling according to a preset temperature polling cycle, measuring the shell temperature value, load current value and environmental temperature value of the GIS busbar joint in the current cycle, and according to the function equation, calculating the polling contact resistance value of the GIS busbar joint; and comparing the polling contact resistance value with a contact resistance value of the GIS busbar joint under normal contact conditions so as to judge whether a fault occurs. According to the method and device for detecting the overheat faults of GIS busbar joints, provided by the invention, a situation whether a fault occurs is judged according to the contact resistance, so that the overheat faults of GIS busbar joints can be detected more effectively, and an effect of ensuring the safe and stable operation of a power system can be facilitated.

The embodiment of the invention provides a method and a device for controlling an electronic expansion valve, relates to the field of air conditioners, and aims at realizing accurate control over opening of the electronic expansion valve under different working modes. The solution is applied to an air conditioner, and the air conditioner includes the electronic expansion valve used for throttling refrigerating fluid; the method comprises the following steps: according to a current working mode of the air conditioner, determining an opening threshold value of the electronic expansion valve; determining target opening of the current period of the electronic expansion valve according to the opening threshold value and opening of the electronic expansion valve within the previous period of the current period; and when the target opening is not less than minimum opening, determined according to exhaust temperature and / or suction pressure of a compressor in the air conditioner within the current period, of an opening interval of the electronic expansion valve, regulating the opening of the electronic expansion valve to the target opening. The method and the device provided by the invention are applied to the air conditioner.