64 results about "Instantaneous rate" patented technology

A communication network having a plurality of subscriber units receive a finite resource from a common node is disclosed. Individual subscriber units may seize the finite resource of the common node to the exclusion of all other subscriber units in the network. A scheduler allocates the finite resource to the individual subscriber units based upon a weight associated with the individual subscriber units. The scheduler determines the weight for each of the subscriber units based upon an instantaneous rate of consuming the finite resource.

In a wireless communication system using multiple antennas at the transmitter and multiple antennas at the receiver, with a sufficiently large number of antennas and / or diversity order, the same performance that is obtainable when employing instantaneous rate indication feedback can be attained without any such short-term feedback by adjusting the data rate of each transmit antenna according to a prescribed function. The prescribed function does not depend on the short-term state of the channel, but instead only depends on its long-term statistics, which may be fed back from the receiver to the transmitter at relatively lengthy intervals.

Systems and methods are provided for allocating bits to pictures in accordance with the bit allocation constraints for operation at both constant and variable bit rates. A statistical complexity measure which is an estimate of the average encoding complexity of the entire data is updated after encoding each picture. This set of parameters, along with an estimate of the encoding complexity of the current picture and the desired average coding rate is used to allocate target bits for encoding the current picture. One method of allocating bits to a picture is to used the statistical complexity measure to vary the instantaneous rate of encoding and allocate bits for this picture so as to generate encoded data at this rate. Another method is to modulate the target generated by a conventional encoder using the current level of the Virtual Buffer Verifier and the deviation of the estimated encoding complexity of the current picture from the statistical complexity measures.

Nonlinear adaptive resource management systems and methods are provided. According to one embodiment, a controller identifies and prevents resource starvation in resource-limited systems. To function correctly, system processes require resources that can be exhausted when under high load conditions. If the load conditions continue a complete system failure may occur. Controllers functioning in accordance with embodiments of the present invention avoid these failures by distribution shaping that completely avoids undesirable states. According to one embodiment, a Markov Birth / Death Chain model of the resource usage is built based on the structure of the system, with the number of states determined by the amount of resources, and the transition probabilities by the instantaneous rates of observed consumption and release. A control stage is used to guide a controller that denies some resource requests in real systems in a principled manner, thereby reducing the demand rate and the resulting distribution of resource states.

A method and system for fairly distributing servicing of I / O requests by a storage device among remote computers that contract for a specified maximum rate of I / O request servicing by the storage device. The remote computers also specify whether the storage device should employ a simple throttling technique or a sliding window throttling technique to limit the rate of I / O request servicing to the contracted-for rate of I / O request servicing. In the simple throttling technique, the storage device services up to some maximum number of I / O requests per unit time for the remote computer, regardless of the overall time-averaged rate of I / O request servicing provided to the remote computer. In the sliding window throttling technique, the storage device maintains an approximate, periodically re-calculated instantaneous rate of I / O request servicing calculated based on recent I / O request servicing by the storage device on behalf of the remote computer. Intervals between servicing of I / O requests are lengthened or shortened in order to continuously adjust the instantaneous rate of I / O request servicing towards the contracted-for rate of I / O request servicing.

The invention provides an unmanned aerial vehicle base station group deployment method based on time correlation. According to the method, a coverage blind area of a ground base station serves as a target area covered by an unmanned aerial vehicle base station group, and the deployment position and the deployment range of the unmanned aerial vehicle base station group are determined according to environmental parameters (position, size and building average height) of the target area. Because link condition fluctuation is caused by conversion between a sight distance link and a non-sight distance link in a three-dimensional space channel and change of shielding conditions of obstacles during transmission of an unmanned aerial vehicle base station, the instantaneous rate does not accuratelyrepresent the average rate of a network any more, time correlation is introduced, and network performance of large-scale time is obtained. Specifically, the interference correlation coefficient is used for measuring the time correlation, the joint coverage rate is used for representing the network performance of large-scale time, and the optimal deployment height and the number of unmanned aerialvehicle base stations are determined according to the change relation of the joint coverage rate along with the deployment height of the unmanned aerial vehicle base station group and the number of the unmanned aerial vehicle base stations in the group.

A method for detection of rotor bar faults in an electric machine is provided. The method includes acquiring electrical signals from the electric machine that are representative of the operative condition of the machine. The symmetrical components from the electrical signals are eliminated by squaring an instantaneous value of each data point from the electrical signals and summing the squared values. The method further includes the step of eliminating discontinuities in the electrical signals by applying a window function to compute weighted representation of the squared values. Furthermore, the method includes the step of normalizing the weighted representation to obtain spectral information. The faults in the rotor bar are detected by analyzing the spectral information obtained after normalization.

This disclosure describes methods and systems for managing video frame rate at a video production site. A video editing processor at one of a plurality of video production sites may monitor an instantaneous rate of video frames processed by a user, and may determine an average rate of video frames processed by the user based on instantaneous rates monitored over time. The video editing processor may detect that the average rate has dropped below a predefined output rate. A controller may determine a rate of change of an instantaneous input rate of video frames being presented to the user for processing, and may increase the input rate of video frames being presented to the user, over a period of time such that the rate of change of the instantaneous input rate is below a predetermined threshold, to restore the average rate to the predefined output rate.

This invention relates to an apparatus and method for deriving speed and position information for an electric motor. Apparatus for and a method of controlling a motor 100 are also disclosed. The apparatus for providing information relating to the operation of an electrical motor 100 comprises a sampler 50, 51 for sampling the instantaneous motor current is and a processor 160 for determining the instantaneous rate of change of the motor current and providing information about the motion or position of said motor based on said instantaneous rate of change of the motor current. In this way speed and position information can be provided, at low speeds, and without using a speed sensor.

The invention discloses a relay system energy efficiency optimization method based on the OFDM, and belongs to the technical field of mobile communication. The method comprises the steps: building a system model; carrying out the analysis of a system scene; summing up problems; and solving an optimization problem through employing a convex optimization method. The method combines the integrated channel state information under the constraints of the maximum total power and minimum user instant speed, gives consideration to the joint optimization problem of enabling the energy efficiency to be maximized while considering to the equity, and gives a mathematical expression of user equity. Aiming at the solving of the optimization problem, the method employs the convex optimization processing, converts a target function of an optimization problem, does not need to carry out approximate calculation, does not affect the precision of the problem, greatly reduces the calculating complexity, and reduces the time delay caused by the system expenditure. The method is reasonable in algorithm design, and is easy to implement.

In an outbound call management system, calls to dial are placed in a buffer queue before transfer to the outbound switch. The rated switch capacity (i.e., X calls per minute) is divided into small submultiples (i.e., Y calls per second) such that short term switch capacity will not be exceeded. Calls are transferred from the queue at the submultiple rate or less depending upon the number of calls in the queue. The time scale is small enough that this instantaneous rate at which calls can be transferred from the queue to the switch does not exceed the instantaneous capacity of the switch. If calls are being placed into the queue at a faster rate than they are sent to the switch, the number of calls in the queue will increase. The call management system will see a resultant apparent increase in the number of placed but unanswered calls. The call management system uses the number of available trunks as a factor when calculating the number of calls to dial, if the number of calls in the queue exceeds a certain number, the call management system will interpret the situation as one in which all the trunks are in use. In this situation, the call management system reduces the number of calls to be dialed.

Method, systems, and devices for determining instantaneous heat exchange between an airflow and a heat exchange element of an HVAC system are disclosed. In some embodiments, methods and systems include receiving or otherwise obtaining airflow data, temperature and humidity data. The airflow data may be used to calculate the volumetric airflow rate, and the temperature and humidity data may be processed with enthalpy data to determine the change in enthalpy (Δh) of the airflow after encountering a heat exchange element. The instantaneous rate of heat exchange (E) between the airflow and the heat exchange element may then be determined from the volumetric airflow rate and change in enthalpy.

There has the features of burst in grouping service and large range of dynamic change in speed rate among the CDMA cellular mobile communication system. If you want to raise the utilization efficiency of the system resources, the reasonable and dynamic channel disposal should be carried out, otherwise the utilization efficiency and the communication quality will be low. The dynamic channel disposal can be realized by measuring service volume and to report the measured service volume. The present patent has provided a dynamic channel disposal method base on the estimation to the service source speed, which can estimate the instant speed of service source quickly and accurately and to dispose the new channel resources according to it for effectively raising the utilization rate of system resources and reducing the unnecessary frequency of channel redisposing.

The invention discloses an improved LTE (Long Term Evolution) scheduling method based on EXP (Exponential rule) scheduling algorithm, mainly to solve the problem that the existing algorithm is not applicable to mixed services. The method is that a weight factor in a scheduling priority coefficient is calculated according to the?instantaneous rate at a nth TTI?(Transmission?Time?Interval), the average?transmission rate of a former (n-1)th TTI by the user i, and GBR?(Guaranteed?Bit?Rate) parameters required by each service. The realization process comprises steps of calculating the?signal-to-noise ratio at each subcarrier of user i, calculating the effective signal-to-noise ratio at each RB (Resource Block) of user i, calculating the instantaneous transmission rate reached at each RB of the nth TTI of the user i according to the corresponding GBR demand of each service, calculating the scheduling priority coefficient at each RB of the user i according to the corresponding GBR demand of each service.

The invention discloses a method for computing instantaneous time lag and an amplitude error of a real-time hybrid simulation test. The method comprises the following steps: pre-estimating a structural period and nonlinearity degree to select a window function with proper length; carrying out window transform on computed displacement and measured displacement of real-time hybrid simulation according to the selected window function, computing time slag and an amplitude error on the window function as instantaneous time slag and an amplitude error at a final moment of the window function; moving the window function with time, computing instantaneous time slag and amplitude errors at different moments until the test is ended. The method disclosed by the invention can be used for carrying out online estimation on real-time hybrid simulation test effects, thereby avoiding the damage to test components caused by unreasonable compensation, and providing necessary information reference for a compensation method.

The invention discloses a method for performing remote analysis and diagnosis decision-making on an operation state at bearing bushing temperature of a hydroelectric generating set. The method comprises the following steps: establishing a state analysis foundation database for the bearing bushing temperature of the hydroelectric generating set and a bushing temperature failure database; remotely monitoring and acquiring important parameters, such as the bearing bushing temperature of the hydroelectric generating set; by adopting a two-stage pattern analysis method for the bearing bushing temperature of the set, i.e. analysis is performed on the change of the bearing bushing temperature under the working conditions of the starting-up mode and the operation mode of the hydroelectric generating set, and by adopting a three-stage trend analysis method, i.e., analysis is performed on the bushing temperature steep rise stage, the bushing temperature slow change stage and the bushing temperature steady state stage of the bearing bushing temperature in a time slot from starting up to steady-state operation of the hydroelectric generating set, performing comprehensive analysis on indexes, such as temperature rise average speed, instantaneous speed, maximum speed and steady-state bushing temperature change rate during operation at the bearing bushing temperature of the hydroelectric generating set, and finally, performing the remote analysis and the diagnosis decision-making on the operation state at the bearing bushing temperature of the hydroelectric generating set.

A device for limiting access to data in a database includes an input for receiving a request to access data in a database and a processor that is communicatively coupled to the input and allows access to the data in the database. A data counter for counting an instantaneous rate of data flow and / or a volume of data accessed and a comparator for determining if the data flow and / or the volume of data accessed in the database exceeds a previously specified value is also included, wherein the processor disallows access to the data in the database in response to the instantaneous rate and / or the volume of data exceeding the previously specified value.

The invention discloses a full-duplex energy acquisition relay adaptive antenna selection transmission method. There are three optional schemes for a transceiving apparatus of a relay antenna. According to the first scheme, one antenna which enables gain from a source to a relay channel to reach the maximum is selected from all antennas of a relay for receiving source signals, and afterwards, an antenna which enables gain from the relay to a sink channel to reach the maximum is selected from residual antennas for forwarding source information to the sink. According to the second scheme, transceiving antennas of the relay are directly selected at the same time so that the self-interference channel gain is enabled to be the smallest. According to the third scheme, first of all, one antenna which enables grain from a source to a relay channel to be the maximum is selected from all the antennas of the relay for receiving source signals, and afterwards, one antenna which enables the gain of a self-interference channel to be the smallest is selected from residual antennas for forwarding source information to a sink. According to the invention, a system can adaptively switch the three antenna selection schemes based on calculation of an instantaneous rate, the transmission rate of the system is enabled to the maximized, and the transmission method is applied to some relay networks not convenient for large-scale wired energy supply.

Thermal management in a portable computing device differentiates between a temperature increase caused by a steady workload and a temperature increase caused by an instantaneous workload. If it is determined that a detected temperature increase is caused by a steady workload, then a configuration of thermal parameters is applied that optimizes thermal performance for a steady workload. If it is determined that a temperature increase is caused by an instantaneous workload increase, then a configuration of thermal parameters is applied that optimizes thermal performance for an instantaneous workload.

A portable electronic device (1) is described, in particular of bracelet watch type, comprising at least first and second display members (8 and 9), means (23, 31) for making measurements of a physical magnitude related to the value of the altitude and a memory zone (26) for storing the measured values of the physical magnitude. The electronic circuits (20) of the device are adapted to control the analog display members, in one mode of operation called the rate of climb mode, so that a first display member (9) indicates the instantaneous rate of change of altitude and the second display member (8) indicates the value of a mean rate of change of altitude against appropriate graduations (10) of the device. Such a device finds its principle application in the field of aeronautical sports.

The application, which relates to the communication field, discloses a carrier-aggregation-based resource allocation method and a network communication system. With the resource allocation method and the network communication system, the queuing waiting time for a real-time service can be shortened. The method comprises: queuing waiting time and data packet transmission time of a buffer queue corresponding to each terminal at a designated carrier are obtained; an initial weight is set for each terminal and iteration is carried out on the queuing waiting time, the data packet transmission time and an initial weight to obtain a current weight of each terminal at a current time; a channel quality parameter of each terminal at the current time is obtained, and an instantaneous rate for to-be-transmitted data packet transmission by each terminal at the designate carrier is determined according to the channel quality parameter; on the basis of the current weight, the instantaneous rates, and an average rate of all data packet transmission by each terminal at the designate carrier by the end of the current time, a terminal priority of each terminal at the current time is determined; and resources at the designated carrier at the current time are distributed to the terminal corresponding to the highest priority among the terminal priorities.

An electronic device that receives a signal indicative of the sound made my a musical instrument in order to determine the instantaneous rate of play of melodic notes on that instrument in terms of notes played per second and display the rate in real time via a display. The regularity of the musician's rate of play is further indicated by the stability of the display reading. Individual sustained melodic notes are identified utilizing differential capacitance and circuit delay time constants to generate a voltage differential in response to a step signal. The device is also selectively operable as a conventional metronome to provide an exemplary sound cue to the musician corresponding to a given number of notes per second and convertible by a switch or foot pedal to monitor the musicians rate of play as he tries to match the demonstrated rate.

A method for detection of rotor bar faults in an electric machine is provided. The method includes acquiring electrical signals from the electric machine that are representative of the operative condition of the machine. The symmetrical components from the electrical signals are eliminated by squaring an instantaneous value of each data point from the electrical signals and summing the squared values. The method further includes the step of eliminating discontinuities in the electrical signals by applying a window function to compute weighted representation of the squared values. Furthermore, the method includes the step of normalizing the weighted representation to obtain spectral information. The faults in the rotor bar are detected by analyzing the spectral information obtained after normalization.

At a coarse time-scale, at the start of each frame the choice of TPs to be made active and users to associate with the active TPs are determined by solving an optimization problem. The inputs to the optimization problem are averaged slowly varying metrics that are relevant for a period longer than the backhaul latency. At a the fine time-scale, in each slot each active TP independently does scheduling over the set of users associated with it, without any coordination with any of the other active TPs, based on fast changing information, such as instantaneous rate or SINR estimates.

The invention discloses a hybrid discontinuous PWM-based instantaneous power decoupling control method for an open winding permanent magnet synchronous motor. According to the method, instantaneous power required by operation of the motor is decoupled into active power and reactive power, and is provided by a main inverter powered by a power supply and a compensation inverter powered by a capacitor in flying capacitor type double inverters; and the main inverter and the compensation inverter are operated in a unit power factor state and a reactive compensation state respectively, so that a trigonometric function and an anti-trigonometric function required to be used in a traditional power distribution algorithm are avoided, the complexity of the control method is reduced, and the running performance of a system of the open winding motor is improved. For a voltage and current phase relation between alternating-current sides of the double inverters, the invention further discloses a hybrid discontinuous PWM modulation strategy, so that the switching loss of the double inverters is greatly reduced, and the efficiency of the driving system of the open winding motor is improved.

An instantaneous monitoring system for underground tunnel cross sections, which can avoid contact between people and hazardous environments and largely improve measurement precision, is provided. The system adopts PLC224XP as a main controller. A stepper motor driver is connected and used for controlling rotation of a stepper motor, rotation of the stepper motor can drive an impulse laser geodimeter to rotate, and two high-speed counters in the PLC send impulse with different frequencies, so that the instantaneous cross-section area measurement and monitoring can be achieved. An upper computer of the system can accurately and instantaneously display the area of the cross sections. The system has significant meaning for underground tunnel cross section values and the change rule in research of ventilation resistance measurement.