76 results about "Rate control" patented technology

The invention discloses a high-frequency motor drive multi-rate control method for time sequence disturbance compensation, and the core principle of the method is that low-rate disturbance compensation and a reference tracking trajectory are improved and converted into a time sequence processing process matched with a high-rate control instruction; specifically, a single disturbance compensation value which can be known only at a sampling moment Ts is expanded into time sequence prediction of disturbance changes on N control points in the future through a generalized proportional-integral observer; meanwhile, a low-frequency single reference instruction is constructed into a smooth high-frequency reference trajectory covering N control points through a Lagrange interpolation method, and closed-loop correction of disturbance compensation and reference tracking is achieved on each high-frequency control point Tc. The problem that open-loop prediction errors are continuously accumulated and spread due to mismatching of information updating rates in traditional multi-rate control is fundamentally solved, and therefore high-precision robust control over the high-frequency motor driving system is achieved.

To control the rate of a mechanical watch with high precision. [Solution] In mechanical watches, A sensor detects the vibrations of the balance, and the cumulative frequency is compared with the clock cumulative frequency of the reference oscillator to calculate the rate error. Based on this error, a control method is determined, and mechanical energy is injected into the balance by an actuator to control the rate. For even more precise control, abnormal vibrations are recorded to evaluate the reliability of the measurements and adjust the control strategy accordingly. In addition, if sensor detection is difficult, it is supplemented by phantom counts estimated from the reference oscillator. If necessary, it is also possible to identify external factors using auxiliary sensors. When high reliability is required, sensors with different detection principles can be duplicated and cross-verified. This configuration enables implementation at various levels, from basic rate control to advanced adaptive control.

This invention discloses a control method and monitoring system based on a planned curve. The method includes: the monitoring system periodically issuing control commands to the controlled system based on the planned curve; the monitoring system receiving and collecting feedback from the controlled system in real time of the control rate, control target value, and actual electrical quantity values; the monitoring system monitoring in real time whether the planned curve is updated and whether the automatic control mode is engaged; in response to the planned curve update or the engagement of the automatic control mode, calculating the remaining adjustment time window and determining whether it is permissible to issue a temporary control command; in response to the permission to issue a temporary control command, determining whether there is an expected adjustment deviation; and in response to the existence of the expected adjustment deviation, determining the temporary control command and issuing it to the controlled system. This invention achieves immediate response of the control system after the planned curve is updated, automatic following after the planned curve is engaged, and post-adjustment of deviations in the control process, thereby improving the real-time performance and reliability of the planned curve control system's adjustment response.

The application discloses a code rate control method, a code rate control device and a computer storage medium. The code rate control method comprises the following steps: predicting the complexity of a current short-term regulation period; calculating the complexity bits of the current short-term regulation period based on the predicted complexity, the actual complexity of a previous short-term regulation period and the actual bits of the previous short-term regulation period; obtaining the buffer state of the current short-term regulation period, determining the buffer bits of the current short-term regulation period based on the buffer state; determining the target bits of the current short-term regulation period based on the complexity bits and the buffer bits; determining the quantization parameter of the current short-term regulation period according to the target bits, and encoding the video data in the current short-term regulation period by using the quantization parameter. In the foregoing manner, the regulation condition of adjacent short-term regulation periods is considered, and the state of the current short-term regulation period is also considered, so that the adaptability of the code rate control is improved while the accuracy of the code rate is ensured.

The invention relates to the technical field of speed control, in particular to a feed rate control method and system in numerical control machining based on data analysis, and the method comprises the steps: obtaining a vibration signal and a current signal in a machining process; calculating the cutting impact strength at each moment, wherein the cutting impact strength is positively correlated with the kurtosis of the amplitude of the vibration signal in the window corresponding to the moment and the logarithm of the absolute mean value of the current signal; and the instability index of each moment is calculated. According to the method, the penalty factor and the kernel function parameter can be adjusted in real time according to the instability of the machining process, high fitting precision is kept when the signal is stable, overfitting is prevented by reducing the penalty factor in the stage of severe abrasion and large noise, and therefore accurate prediction of the surface roughness is achieved, closed-loop correction is conducted on the feeding rate, and the precision of the surface roughness is improved. And the processing efficiency and the surface quality are effectively balanced.

The utility model discloses a rate adjusting device used in the slurry pumping process, and relates to the technical field of rate adjusting devices, the rate adjusting device used in the slurry pumping process comprises a slurry pump device, and the upper end of the slurry pump device is provided with a throttling device; a speed adjusting device is mounted at the upper end of the throttling device; according to the utility model, when the speed is adjusted, the arc-shaped baffle plate and the slurry outlet pipe are controlled to slide through the telescopic air cylinder, so that the overflowing area of the slurry outlet pipe can be accurately adjusted, and the flow speed of slurry can be flexibly changed to adapt to different working requirements; and a valve clack in the throttling device is matched with the speed adjusting device for use, so that the flow and the flow speed of the slurry are doubly controlled, and the speed control precision and reliability of the whole device in the slurry pumping process are improved.

The invention discloses a rate control method and device, a communication node, a storage medium and a product. The rate control method comprises the following steps: acquiring the current time delay and the current throughput of a second communication node; processing the current time delay, the current throughput, the current time delay base line and the current throughput base line through a two-factor joint judgment model, and determining a control instruction; under the condition that the control instruction indicates rate control, target node information is determined, and the target node information indicates a communication node of which the transmission rate needs to be adjusted; and transmitting the control instruction and the target node information to a third communication node. According to the speed control method provided by the invention, the speed control accuracy is improved.

The application relates to the technical field of crushers, and provides a feeding speed control method for a crushing system and the crushing system, wherein the crushing system comprises a crusher and a feeding device, the feeding speed control method for the crushing system comprises the following steps: acquiring working parameters of a crushing chamber, the working parameters of the crushing chamber comprising a material level height in the crushing chamber and a material level change speed in the crushing chamber; acquiring a feeding state of the feeding device, the feeding state of the feeding device at least comprising a material height on the feeding device; and controlling a feeding speed of the feeding device according to the working parameters of the crushing chamber and the feeding state of the feeding device. In this way, the material level height and the material level change speed in the crushing chamber are direct and intuitive parameters for representing the working condition of the crusher, and the feeding speed can be adjusted in time and effectively in combination with the feeding state of the feeding device, so that the problem that the feeding speed of the feeding device cannot be controlled in time according to the working current of the crusher in the prior art is solved.

The present application relates to a kind of control wide thin gauge 304 stainless steel rolling bias method, belong to reversible cold rolling technical field, solve the problem of roll system bias in the reversible cold rolling process of wide thin gauge 304 stainless steel, the present application proposes the control method of wide thin gauge 304 stainless steel rolling bias problem, this method involves pass and deformation rate control, rolling tension parameter control, and three aspects of shape control, strong system and practicality.After using the control method provided by the present application, the bias incidence rate is reduced from previous 10% to 0.5% or less, significantly improve the stability of stainless steel wide thin gauge cold plate rolling.

Controlling a bit rate for encoding a signal. The signal is encoded using at least two different encoding algorithms. A total bit rate is allocated to at least two components of the signal. A first component of the signal is to be encoded using a first encoding algorithm. A second component of the signal is to be encoded using a second encoding algorithm.

The application relates to the technical field of numerical control, in particular to a feed ratio control method of a numerical control system. The method comprises the following steps: acquiring current, power and vibration amplitude at each moment; acquiring an abrasion rate based on the collected parameters, the change characteristics of a grinding wheel and a feed speed; determining an optimal feed speed based on the abrasion rate change in a speed increasing interval; determining a real-time feed speed at each moment based on the abrasion rate difference and the abrasion rate growth rate in the corresponding speed increasing interval at the current moment; acquiring an adjustment interval and an optimal interval based on the speed change amount, and adjusting the real-time feed speed based on the abrasion rate difference of the two intervals to acquire a current optimal feed speed; acquiring an abrasion proportion coefficient based on the current optimal feed speed, and determining an optimal real-time feed speed by combining the current optimal feed speed; and controlling based on the optimal real-time feed speed. The application can adaptively adjust the feed ratio and improve the workpiece surface quality.

The invention relates to the technical field of bent pipe forming control, in particular to a bent pipe angle and thinning rate control method and system.According to the bent pipe angle and thinning rate control method and system, angle advancing quantity values and curvature change rate values are numbered according to steps to construct a continuous sequence, a time convolution network is introduced to conduct convolution calculation on the change amplitude among multiple adjacent steps, and therefore the angle and thinning rate of a bent pipe is obtained. Angle change and curvature change in the bending process are not judged as isolated parameters any more, conjoint analysis is carried out based on a time sequence incidence relation, a near-end strategy optimization algorithm is introduced to carry out proportion down-regulation on a bending speed value and a curvature change rate value corresponding to the current step, reverse angle offset is synchronously superposed, and the bending speed value and the curvature change rate value corresponding to the current step are calculated. Parameter adjustment is limited in a near-end interval near the current step, large-range disturbance to an overall bending path is avoided, meanwhile, parallel records of original parameters and correction parameters are reserved, and the subsequent angle accumulation and correction process has a clear data basis.

Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, for a conversion between a current frame of a video and a bitstream of the video, rate control information for encoding a current block in the current frame, the rate control information being determined at least based on information of a first set of blocks in the current frame that is encoded before the current block; and performing the conversion based on the rate control information.

An encoding system (110) receives a report from a decoding system (120). The report identifies a packet that includes a first video portion of the video stream and includes feedback indicating whether the decoding system (120) successfully receives the first video portion. The encoding system (110) configures the video encoder (115) to encode a second video portion of the video stream based on whether the feedback indicates that the first video portion is successfully received. Correspondingly, a decoding system (120) sends the report and decodes the second video portion according to the encoding.

Certain aspects of this disclosure provide rate control techniques for semantic communication. One method includes: obtaining an indication of a target from a source application; determining one or more channel conditions of a communication channel; determining, based on the target and the one or more channel conditions of the communication channel, a function of first information to be transmitted on the communication channel and the number of resources in a first resource set for transmission on the communication channel; obtaining second information corresponding to source data from the source application; and transmitting the second information on a second resource set satisfying the function of the communication channel via simulated transmission.

The present application relates to a kind of first steel hit rate control method of hot strip mill equipment, the hot strip mill equipment includes N frame that can be supplied with strip and first steel hit rate control system;Its characterized in that, the first steel hit rate control method of the hot strip mill equipment includes the following steps that the first steel hit rate control system executes: with zero value self-learning module receives the first steel big data module sent historical first steel data, obtains zero value self-learning value ΔL i ;Estimate the deformation resistance deviation average value Δki of each frame rolling force;Estimate the thickness deviation Δhi of each frame;The present application is based on the model of strip threading self-adaption, in combination with multiple algorithms, more accurate calculation rolling force, bending force, the deviation correction coefficient of roll gap, collects and comprehensively considers multiple first steel hit deviation, obtains zero value self-learning coefficient;Can obtain more than the set number of three previous frames, improve the hit rate of first steel.

An encoding system (110) receives a report from a decoding system (120). The report identifies a packet comprising a first video portion of a video stream and comprises feedback indicating whether the first video portion was successfully received by the decoding system (120). The encoding system (110) configures a video encoder (115) to encode a second video portion of the video stream based on whether the feedback indicates that the first video portion was successfully received. Correspondingly, the decoding system (120) sends the report and decodes the second video portion in accordance with the encoding.

A control method, a control system, and a non-transient computer-readable storage medium are provided. The control method is applicable to a pumping station comprising one or more pumps. The method may include: comparing an inflow rate of the pumping station with a flow rate for optimal energy consumption of the pumping station; determining, based on whether the inflow rate of the pumping station is greater than or equal to, or less than or equal to, the flow rate for optimal energy consumption of the pumping station, a corresponding constraint that indicates whether a target outflow rate of the pumping station is to be greater than or equal to, or less than or equal to, the flow rate for optimal energy consumption of the pumping station; and setting a target outflow rate that meets the constraint, for constant flow rate control of the pumping station.

The present disclosure provides a rate control method, device, electronic device, storage medium and program product. The method includes: dividing a video sequence into multiple image groups; determining the predicted rate of each image group and the first parameter of each image group; determining the predicted rate of the first predicted frame based on the predicted rate and the number of frames of the multi-frame images included in each image group; for the i-th predicted frame in each image group, performing the following steps: updating the second parameter of the i-th predicted frame based on the second parameter of the i-1-th predicted frame, the predicted rate of all predicted frames in the first i-1 predicted frames, the actual rate of all predicted frames and the number of frames of the multi-frame images included in each image group; determining the predicted rate corresponding to the i-th predicted frame based on the first parameter, the predicted rate of the i-1-th predicted frame and the second parameter of the i-th predicted frame. In this way, variable bit rate rate control can be achieved without significantly increasing resource consumption and delay.

The invention relates to the technical field of computers, in particular to a rate control method and device for a Docker container virtual network. The method comprises the following steps: acquiring event data corresponding to a Docker internal event, and extracting network event characteristics in the event data; judging whether the Docker internal event is a virtual network creation event or a virtual network abnormal event based on the network event characteristics; if the Docker internal event is a virtual network creation event or a virtual network abnormal event, obtaining a network flow control parameter corresponding to the virtual network creation event or the virtual network abnormal event; and performing traffic control on the Docker internal event in a preset mode according to the network traffic control parameter. According to the invention, fairness and flow distribution of the container in the same network environment can be ensured, and an individual task container is prevented from occupying excessive bandwidth resources.

The application discloses a two pass fixed QP code rate control method, comprising the following steps: setting a target total bit number TB, starting a first encoding of the two pass, obtaining a code stream, after the encoding is finished, counting a total frame number N of the video, a frame type of each frame, a QP of each frame, a texture bit number of each frame, a motion vector bit number of each frame, marking the frame type of each frame as FT(1), FT(2),..., FT(N) respectively, marking the QP of each frame as qp(1), qp(2),..., qp(N) respectively, marking the texture bit number of each frame as tex_bits(1), tex_bits(2),..., tex_bits(N) respectively, and marking the motion vector bit number of each frame as mv_bits(1), mv_bits(2),..., mv_bits(N) respectively; starting a second encoding of the two pass, calculating actual QP values of each frame according to the target total bit number TB and the information collected in the first encoding, and encoding each frame to obtain a final code stream.

A system includes a device coupled to a processing device. The processing device is to receive a timing signal associated with a synchronized time. The processing device is further to synchronize a rate limiter of the device to the synchronized time responsive to receiving the timing signal, wherein the rate limiter is configured to schedule one or more workloads at a respective rate. The processing device is to receive a request to execute the one or more workloads, the request comprising a rate to execute each workload of the one or more workloads. The processing device is to execute the one or more workloads at the respective rate upon synchronizing the rate limiter.

A signal is received from a sensor or other controller of the vehicle. A bucket state is incremented responsive to the signal exceeding a signal threshold. An event is generated responsive to the bucket state exceeding a bucket threshold value. The event is sent, in an event message, to a cloud server.

A system according to an embodiment includes a fluid circulation apparatus 20 including a pump 22 and allowing a fluid to circulate by rotation of the pump, and a control device 30 controlling the fluid circulation apparatus 20. When the target flow rate for the fluid is changed, the control device 30 derives the changed rotation speed on the basis of the target flow rate and the flow rate of the fluid and the rotation speed of the pump 22 at the time of changing the target flow rate or the flow rate of the fluid and the rotation speed of the pump 22 in the predetermined period before changing the target flow rate, and changes the rotation speed of the pump 22 toward the changed rotation speed.

The invention discloses a combined harvester header feed quantity control method and a related device, and relates to the technical field of agricultural machinery control, and the method comprises the steps: calculating the separation loss of a threshing system based on the longitudinal inclination angle of a machine body, the rotating speed of a rotor, the gap between the rotor and a concave plate, the feed quantity, the grain proportion and the grain moisture content; the feeding impurity flow of the cleaning system is calculated based on the rotor rotating speed, the gap between the rotor and the concave plate, the feeding amount, the grain proportion and the impurity water content, and the cleaning loss of the cleaning system is calculated based on the longitudinal gradient, the grain water content, the fan rotating speed, the screen opening degree, the feeding grain flow and the feeding impurity flow. And based on the feeding amount, the separation loss and the cleaning loss, the advancing speed of the combine harvester is controlled, and header feeding amount control is completed. According to the invention, interference can be dynamically compensated, collaborative optimization is realized, control precision and control robustness are improved, and harvesting efficiency and grain loss are both considered.

Methods and systems for rate control include determining (322) an encoding parameter value for use with an input set of video frames based on a current channel capacity using a machine learning model that accepts the input set of video frames and the current channel capacity as inputs. The input set of video frames is encoded using the encoding parameter (324) to produce encoded video that has a bitrate below the current channel capacity. The encoded video is transmitted (326).

The application provides a rate control method and device, the method comprising: obtaining a first actual fill level of a coding buffer at a current time; determining a quantization step by performing exponential mapping on the first actual fill level; the base of an exponential function in a target relationship formula of the exponential mapping is a number greater than 1; and determining a quantization parameter of a current coding unit based on the quantization step. Based on this, when the coding difficulty of an image to be coded increases, the fill level of the coding buffer is fluctuated to relieve the state of the buffer.

Example embodiments of the present disclosure relate to rate control configuration and adaptation. A first device transmits, to a second device, a service request comprising a group of requested service parameters and a plurality of alternative service requirements in a prioritized order, each alternative service requirement comprising at least one long time-scale rate control requirement and at least one short time-scale rate control requirement associated with a flow description; and receives, from the second device, a report of QoS notification by a fourth device based on a requested QoS profile and at least one alternative QoS profile corresponding to the group of the requested service parameters and the plurality of alternative service requirements. In this way, an aligned rate control configuration and adaptation can be achieved between applications and 5GS, which considers both long time-scale and short time-scale rate control requirements.

Systems and methods are provided for rate control schemes for sampling sensors on a shared communication channel by grouping sensors into rate groups according to data collection rates. Examples include a communication channel, a plurality of sensors connected to the communication channel and configured to generate telemetry data, and a scheduler circuit configured to activate the communication channel according to a system rate. The scheduler circuit may sample telemetry data generated by the plurality of sensors according to a plurality of data collection rate groups, which include a subset of the plurality of sensors associated with a distinct data collection rate. The distinct data collection rates may be ratios of a system rate selected such that inverses of the ratios are whole numbers. Examples also include an integrated circuit configured to write the sampled telemetry data into a buffer. A system can be adapted based on the sampled telemetry data.