49 results about "Direct feedback" patented technology

The invention provides a signal processing method and device, electronic equipment and a storage medium, and the method comprises the steps: judging whether a current click is a subsequent click or not when it is detected that a user carries out the current click on a control; wherein the subsequent clicks are other clicks except the first click in the continuous clicks; under the condition of determining that the current click is not the subsequent click, issuing a setting signal triggered by the control based on the current click to underlying hardware; when it is determined that the current click is the subsequent click, determining an issuing moment based on the period duration of the preset frequency; determining a setting signal triggered by the control closest to the issuing moment as a target setting signal; and issuing the target setting signal to the underlying hardware at the issuing moment. According to the method, signal response setting delay can be reduced, a user can experience faster and more direct feedback, user experience is improved, system overload or wrong response caused by continuous and rapid clicking can be avoided, and system stability is guaranteed.

The invention relates to the technical field of bridge construction, and discloses a bridge steel member welding parameter self-adjustment control system and method.The bridge steel member welding parameter self-adjustment control system comprises an acoustic sensing module used for simultaneously obtaining real-time feedback data reflecting the geometric morphology of a current molten pool and feedforward data reflecting disturbance in front of a welding path; the feedback calculation module is used for calculating a feedback adjustment amount according to the deviation between the feedback data and a preset target; and the feed-forward calculation module is used for calculating a feed-forward adjustment amount according to the feed-forward data so as to suppress disturbance in advance. By combining direct feedback control of geometric morphology in a molten pool, predictive feedforward control of front disturbance and online self-adaptive updating of a control model, accurate closed-loop control over key indexes such as penetration depth can be achieved, meanwhile, sudden disturbance such as groove change is actively coped with, material characteristic change in the welding process is adapted, and the welding quality is improved. Therefore, the welding quality and stability of the bridge steel member under the complex dynamic working condition are remarkably improved.

The invention relates to the technical field of tactile feedback, in particular to a wearable tactile feedback device for badminton training, which comprises a motion parameter extraction module, an action analysis module, a time sequence comparison module, a tactile signal generation module and a feedback execution module. According to the invention, through gaits and racket swinging actions captured by wrist and ankle sensors, the ability of capturing action details of athletes is significantly improved, and different from a conventional tactile feedback technology, the scheme enables the athletes to accurately grasp core parameters of actions such as step length, speed and angle through real-time data capture; the control ability of exercise details is improved, through deep analysis of data, an athlete can obtain direct feedback about action optimization in real time, rapid adjustment is carried out to achieve ideal exercise performance, the individuation and adaptability of exercise training are effectively enhanced, and the exercise training efficiency is improved. And it is ensured that the training scheme of each athlete can accurately meet the actual performance and improvement requirements of the athlete.

A method for transmitting information on a sidelink and a communication apparatus. A comparison result between a measurement result of a plurality of reference signals (i.e., a plurality of beams) and a threshold is fed back within the same time unit, or whether a measurement result of a plurality of reference signals satisfies a condition is fed back, instead of directly feeding back the measurement result of the plurality of reference signals. Different reference signals correspond to different beam directions (different reference signals are sent by using different beams). A measurement result of a reference signal (beam) comprises at least one of RSRP, RSRQ, SNR, BLER, or SINR. The comparison result between the measurement result and the threshold may comprise, for example, a difference, a difference range, or a difference interval. The information length used for indicating whether the comparison result or the measurement result satisfies the condition is less than the information length used for directly indicating the measurement result, so that the amount of data that must be fed back may be effectively reduced, decreasing the length of feedback information and communication resources required by the feedback information.

The invention discloses a quarter-rate eight-phase sampling and decision feedback equalizer circuit and a quarter-rate eight-phase sampling and decision feedback equalizer method, and relates to the technical field of circuit design and digital information transmission. The multi-tap time-interleaved decision feedback equalizer circuit can be realized only by switching two adder circuits through the MUX switch, and meanwhile, the use of the MUX switch on a first-stage tap feedback path is avoided through a connection mode of directly feeding back the outputs of two time-interleaved samplers to the input end of the adder, so that the feedback delay time is effectively shortened, and the service life of the multi-tap time-interleaved decision feedback equalizer circuit is prolonged. And the working speed of the decision feedback equalizer is improved. By adopting a low-speed clock with a quarter rate, the area and the power consumption of a receiver circuit can be effectively reduced, the delay time of a feedback path is reduced, and a higher transmission rate is obtained under the condition of limited power consumption.

A stove valve body with a firepower feedback function comprises a valve shell, a valve element is rotationally installed in the valve shell and connected with a valve rod, a handle is arranged on the valve rod, and when the handle rotates, the valve element is driven by the valve rod to rotate so as to control combustion of a stove. The valve element or the valve rod is further connected with a fire feedback device, and the fire feedback device outputs corresponding control electric signals according to the position of the valve element. The gas stove valve body has the advantages that a traditional gas stove valve body lacks direct feedback on the firepower, and the firepower feedback device is installed on the valve element or the valve rod, so that corresponding control electric signals can be output according to the position of the valve element. The function is matched with a main control system, so that a user can accurately adjust the firepower, the uncertainty of judging the firepower according to experience is avoided, and the accuracy and consistency of cooking are improved.

The invention discloses a level crossover type pipelined analog-to-digital converter with trigger sampling and residual quantization. The level crossover type pipelined analog-to-digital converter comprises a level crossover detection circuit, a residual voltage capture circuit, a residual amplification circuit and a sub analog-to-digital conversion circuit, an input signal is monitored through a level cross-domain detection circuit, when the input signal crosses a preset level, a crossing signal and a first-stage digital code are generated, meanwhile, a residual voltage capturing circuit starts to work, and residual voltage is accurately captured through sampling operation triggered by the crossing signal and direct feedback of the first-stage digital code; and the captured residual voltage is amplified by using a residual amplification circuit, and then is further quantized by a second-stage sub analog-to-digital conversion circuit to generate a second-stage digital code. By introducing trigger sampling and residual quantization, inevitable signal correlation errors in a traditional level stride-over analog-to-digital converter are converted into smaller non-signal correlation errors, and the challenge of high-precision design of the level stride-over analog-to-digital converter is effectively solved.

Provided in the present application are a channel information feedback method, a channel information receiving method, and related apparatuses. The channel information feedback method provided in the present application comprises: a terminal device receiving first indication information, wherein the first indication information is used for indicating M space-frequency units for which the terminal device feeds back channel information, M being an integer greater than or equal to 1; and then, on the basis of the first indication information, the terminal device sending the channel information of the M space-frequency units, wherein the channel information of the M space-frequency units is obtained by means of measuring a first reference signal, the first reference signal is carried on N space-frequency units, and the M space-frequency units are some or all of the N space-frequency units, with N being an integer greater than or equal to 1. Therefore, a network device can conveniently perform inference on the basis of the channel information of the M space-frequency units, so as to obtain channel information of the N space-frequency units. A terminal device directly feeds back channel information of some space-frequency units, without the need to perform eigenvalue decomposition and DFT calculation on a downlink measurement channel so as to obtain a precoding matrix. Therefore, the terminal complexity is reduced.

The application relates to the technical field of bridge construction, and discloses a bridge steel member welding parameter self-adjusting control system and method, which comprises an acoustic sensing module, which is used for simultaneously acquiring real-time feedback data reflecting the current molten pool geometric shape and feedforward data reflecting disturbance in front of a welding path; a feedback calculation module, which calculates a feedback adjustment amount according to the deviation of the feedback data from a preset target; and a feedforward calculation module, which calculates a feedforward adjustment amount according to the feedforward data to suppress the disturbance in advance. By combining direct feedback control of the molten pool internal geometric shape, predictive feedforward control of the front disturbance and online self-adaptive updating of the control model, accurate closed-loop control of key indexes such as the penetration depth can be realized, sudden disturbances such as changes in the groove can be actively responded to, and changes in material properties in the welding process can be adapted, so that the welding quality and stability of the bridge steel member under complex dynamic working conditions are significantly improved.

A method of decision feedback equalization includes receiving symbols at a first rate, converting the symbols into first bits and second bits using a first slicer and a second slicer, respectively, wherein each of the first and second slicers operates at a second rate approximately equal to half the first rate, alternately sampling the first bits using a first latch and a second latch, wherein each of the first and second latches operates at a third rate approximately equal to a quarter of the first rate, alternately sampling the second bits using a third latch and a fourth latch, wherein each of the third and fourth latches operates at the third rate, alternately coupling the first latch and the second latch to a feedback input of the second slicer, and alternately coupling the third latch and the fourth latch to a feedback input of the first slicer.

The invention discloses a sound detection system and method using a convolutional neural network technology, and the system comprises an edge calculation control module and a sound collection sensor, and the sound collection sensor is disposed on the edge calculation control module. The beneficial effects of the invention are that the sound acquisition sensor is directly connected with the edge calculation control module, when other auxiliary devices are not accessed and sound analog signals are transmitted into the edge calculation module to produce a spectrogram, the built-in identification model can identify and judge the spectrogram, and meanwhile, the edge calculation control module is internally provided with the buzzer, so that the sound acquisition sensor can be directly connected with the edge calculation control module. Different buzzing frequencies can be given according to different sound recognition results, the system can directly communicate with a three-color lamp, direct acousto-optic feedback is achieved, collected sound information is judged from multiple aspects, recognition of multiple judgment factors is achieved through the use of a recognition model, and therefore the applicability is wider.

The utility model discloses a termite cave detector which comprises a shell, two protective sleeves are arranged on the outer wall of the shell, and each protective sleeve is of an internal hollow structure. A central cylinder is arranged in the shell, a spring detection structure is arranged at the bottom end of the central cylinder, and a detection needle head is arranged at the bottom end of the spring detection structure; the detection needle head of the spring detection structure is used for sensing soil resistance mutation (the density of the ant cave area is reduced), mechanical signals are directly fed back, the detection result of the ant cave area is obtained, the cotton thread sensing structure is used for triggering the indicating rod by means of sinking of the gravity block after moisture absorption, humidity changes are synchronously reflected, and through humidity changes of soil near the ant cave area, the ant cave area is detected. In the detection process, electronic elements or external energy sources are not needed, and therefore the termite cave detection device is suitable for long-term use.

A method of decision feedback equalization includes receiving symbols at a first rate, converting the symbols into first bits and second bits using a first slicer and a second slicer, respectively, wherein each of the first and second slicers operates at a second rate approximately equal to half the first rate, alternately sampling the first bits using a first latch and a second latch, wherein each of the first and second latches operates at a third rate approximately equal to a quarter of the first rate, alternately sampling the second bits using a third latch and a fourth latch, wherein each of the third and fourth latches operates at the third rate, alternately coupling the first latch and the second latch to a feedback input of the second slicer, and alternately coupling the third latch and the fourth latch to a feedback input of the first slicer.

Method and systems for obtaining direct feedback from a payment card by using energy received from a radio frequency identification (RFID) card reader is provided. The method is implemented by a processor that is embedded in the payment card. The method includes: receiving, from the RFID card reader, a radio frequency (RF) signal that relates to a proposed transaction; transmitting, to the RFID card reader, account information that relates to the proposed transaction; and causing an actuator that is embedded in the payment card to actuate a feedback action based on the RF signal. The actuator may include a haptic device that generates a vibration that is detectable by a touch of a user of the payment card.

The invention belongs to the technical field of analog integrated circuits, and particularly relates to a CTDSM circuit capable of compensating overshoot loop delay in any period. A direct feedback loop is introduced into each output end of an m-channel TI ADC, code words generated by each channel are ranked from high to low according to the quantization degree, and then the code words are selectively fed back to the input end of the TI ADC through unit period delay which is gradually reduced from m to 1, so that overshoot loop delay is compensated, and the frequency of the TI ADC is increased. According to the method, the overshoot loop delay of any period in the CTDSM with the TI ADC as the quantizer can be compensated, and the limitation that only one-period overshoot loop delay can be compensated in an existing scheme is broken through. The method is suitable for the situation that the TI ADC with any number of channels serves as the CTDSM quantizer, the stability of the CTDSM circuit is improved, and support is provided for development of the CTDSM in the high-speed and high-precision field.

The present invention discloses a dual-frequency four-arm helical antenna for low-orbit satellite communication, including a direct-feed helical unit, a coupled-feed helical unit, an antenna reflective base plate and a feeding network; the tops of the direct-feed helical unit and the coupled-feed helical unit are open-circuited and installed on the antenna reflective base plate in a coaxial nested manner; the coupled-feed helical unit is connected to the grounding point of the coupled-feed helical arm; the direct-feed helical unit is connected to the feeding point of the direct-feed helical arm; the feeding network is installed on the antenna reflective base plate, connected to multiple direct-feed helical arm feeding points, and is used to feed multiple direct-feed helical arms. The present invention simultaneously satisfies the dual-band operation of the four-arm helical antenna, and both dual-bands have approximately the same heart-shaped radiation pattern, so that the low-orbit satellite can have the best effect in both receiving and transmitting when communicating at a low elevation angle of the terminal.

The invention discloses a laser power attenuator and method based on load end full-closed loop feedback, and the attenuator comprises a fixed frame, and a drive unit, a polarization rotation element, a polarization detection unit, an angle measurement unit and a controller which are integrated on the fixed frame. The angle measuring unit is used for directly measuring the actual angle of the polarization rotating element rotating around the optical axis of the polarization rotating element, and the controller is configured to carry out closed-loop control on the driving unit according to the fed-back actual angle and drive through synchronous belt transmission. The polarization rotating element and the transmission driven wheel are rigidly connected to form an integrated rotating mechanism, a measuring part of the angle measuring unit is directly mounted on a rotating shaft of the mechanism, and the polarization analyzing unit adopts a Brewster diaphragm. According to the invention, direct feedback is carried out through the load end, the influence of mechanical transmission chain errors on the control precision is eliminated, and the precision, repeatability, dynamic response speed and long-term working stability of laser power regulation and control are remarkably improved.

The present invention discloses a level-spanning pipelined analog-to-digital converter with trigger sampling and residual quantization, including a level-spanning detection circuit, a residual voltage capture circuit, a residual amplification circuit, and a sub-analog-to-digital conversion circuit; the present invention monitors the input signal through a level-spanning detection circuit, and when the input signal crosses a preset level, a spanning signal and a first-level digital code are generated, and at the same time, a residual voltage capture circuit starts to work, and the residual voltage is accurately captured by the sampling operation triggered by the spanning signal and the direct feedback of the first-level digital code, and the captured residual voltage is amplified by a residual amplification circuit, and then further quantized by a second-level sub-analog-to-digital conversion circuit to generate a second-level digital code. The present invention converts the inevitable signal-related errors in the traditional level-spanning analog-to-digital converter into smaller non-signal-related errors by introducing trigger sampling and residual quantization, effectively solving the challenge of high-precision design of the level-spanning analog-to-digital converter.

The present invention discloses a quarter-rate 8-phase sampling and decision feedback equalizer circuit and method, relating to the field of circuit design and digital information transmission technology. Four groups of data signals and four groups of edge signals are sampled using eight quarter-rate clock phases. Only two adder circuits, switched by a multiplexer (MUX) switch, are required to implement a multi-tap time-interleaved decision feedback equalizer circuit. Furthermore, the outputs of the two time-interleaved samplers are directly fed back to the adder inputs, eliminating the need for a MUX switch in the first-stage tap feedback path. This effectively shortens feedback delay and increases the operating rate of the decision feedback equalizer. By using a quarter-rate low-speed clock, the area and power consumption of the receiver circuit can be effectively reduced, the delay time of the feedback path can be reduced, and a higher transmission rate can be achieved under limited power consumption conditions.

The invention relates to a space remote sensing linear form amplitude-frequency detection and self-adaptive flutter suppression system and a simulation system, and belongs to the technical field of spacecraft micro-vibration suppression. The space remote sensing linear form amplitude-frequency detection and self-adaptive flutter suppression system comprises a self-adaptive flutter suppression system and a form amplitude-frequency detection system; the TDI-CCD camera is installed on the self-adaptive flutter suppression system, the TDI-CCD camera images a target, the form amplitude-frequency detection system calculates flutter amplitude-frequency information according to a target image, calculates a negative stiffness value required by the self-adaptive vibration isolation system according to the flutter amplitude-frequency information and outputs a control signal corresponding to the negative stiffness value to the motor, the motor drives the eccentric wheel to rotate, and the self-adaptive vibration isolation system is driven by the eccentric wheel to rotate. Therefore, the inclination angle of the inclined spring is adjusted, and the self-adaptive flutter suppression system is in a quasi-zero stiffness interval. According to the invention, self-adaptive closed-loop control of flutter suppression is realized by utilizing direct image feedback, an additional sensor is not needed, and the method has the advantages of high universality, high adaptability and the like.

The invention relates to the field of big data processing, and discloses a method and system for solving a cache penetration problem, a medium and computing equipment, and the method comprises the following steps: determining a first query result of a client request in a cache system, and judging whether to perform database query according to the first query result; determining a second query result of the client request in the database, and judging whether the query is finished or not according to the second query result; if not, null caching is carried out, and when the client request appears again, direct feedback is carried out by the caching system. The problem that the database pressure is too large can be effectively solved.

The utility model relates to the technical field of metal slag removal, and discloses a slag removal device for waste metal recovery, which comprises a case, the top of the case is provided with a first sliding chute and two second sliding chutes, a first sliding block is slidably mounted in the first sliding chute, the top of the first sliding block is fixedly provided with a fixing block, and the top of the fixing block is fixedly provided with a second sliding chute. An L-shaped rod is fixedly installed on the right side of the fixing block, and the outer surface of the third sliding groove is sleeved with a clamping block in a threaded mode. According to the steel grinding device, the rotating disc is rotated, the rotating disc drives the threaded rod to rotate, the threaded rod drives the L-shaped rod and the clamping block to move backwards together, and therefore the steel grinding precision of the grinding roller is adjusted. The direct feedback mechanism ensures that the polishing precision is greatly improved, the situation that resources are wasted due to uneven polishing caused by manual judgment or mechanical errors is reduced, and the machining quality of products and the resource recovery rate are greatly improved.

The application relates to the technical field of freight handling equipment and discloses a control method for a single gate closing cylinder of a truck tailboard, which specifically comprises the following steps: S11: manually sending a motion instruction to a vehicle-mounted system; the vehicle-mounted system receives and identifies the current instruction and sends the instruction to the truck tailboard for motion execution; S12: if there is no motion execution, the vehicle-mounted system directly feeds back a completion state judgment; S13: if there is motion execution, the truck tailboard executes and then feeds back a stroke switch group motion signal to the vehicle-mounted system; S14: the vehicle-mounted system identifies the feedback signal and judges whether there is motion execution; if there is motion execution, the motion execution is completed, the motion instruction is manually sent to the vehicle-mounted system again; and S15: if there is no motion execution, the vehicle-mounted system directly feeds back a completion state judgment and carries out relevant voice prompting. The stroke switch group is arranged to realize state detection and motion limitation of the truck tailboard, so that the damage of the truck tailboard caused by over-limit motion is effectively prevented.

The present application belongs to the technical field of analog integrated circuit, and particularly relates to a CTDSM circuit capable of compensating for an arbitrary period overshoot loop delay. The present application introduces a direct feedback loop at each output end of an m-channel TI ADC, sorts the code words generated by each channel from high to low in terms of quantization degree, and then selectively feeds back the code words to the input end of the TI ADC through unit period delay from m to 1, so as to compensate for the overshoot loop delay. This method can compensate for the arbitrary period overshoot loop delay in the CTDSM with the TI ADC as a quantizer, and breaks through the limitation that the existing scheme can only compensate for one period of overshoot loop delay. The present application is applicable to the case that the TI ADC with an arbitrary number of channels is used as a CTDSM quantizer, improves the stability of the CTDSM circuit, and provides support for the development of the CTDSM in the high-speed and high-precision field.

A method for equalizing a data signal includes: providing a data signal to a pair of input transistors providing an output signal; contributing a first current or voltage to the output signal using a first decision feedback circuit, the first current or voltage having a magnitude determined by the first weighted feedback signal, the first decision feedback circuit comprises a first pull-up circuit coupled to the drain electrode of the first input transistor and a first pull-down circuit coupled to the drain electrode of the first input transistor; and contributing a second current or voltage to the output signal using a second decision feedback circuit, the second current or voltage having a magnitude determined by a second weighted feedback signal, the second decision feedback circuit includes a second pull-up circuit coupled between the drain of the second input transistor and the first voltage rail and a second pull-down circuit coupled between the drain of the second input transistor and the second voltage rail.

The application provides a feedback method and device of orthogonal time frequency space (OTFS) and communication equipment, and relates to the technical field of wireless communication. The feedback method of the orthogonal time frequency space (OTFS) is applied to a first communication equipment, and the method comprises the following steps: receiving a first OTFS signal sent by a second communication equipment; obtaining a time domain symbol number change condition according to the first OTFS signal; the time domain symbol number change condition is a change condition of a first time domain symbol number corresponding to the first OTFS signal relative to a second time domain symbol number; the second time domain symbol number is a preconfigured initial time domain symbol number or a time domain symbol number corresponding to a second OTFS signal; and the time domain symbol number change condition is fed back to the second communication equipment. Compared with the existing direct feedback time domain symbol number mode, the feedback mode of the time domain symbol number change condition fed back to the first communication equipment in the application does not have redundancy, can reduce the overhead, and can make the overhead not affected by the range of the time domain symbol number.

A machine learning-based proxy model may be generated to determine a quality of user experience in a vehicle-based communication network in the absence of direct feedback from a user regarding the user experience. The machine learning-based proxy model may include supervised and / or unsupervised machine learning models, including, for example, k-means clustering algorithms and / or artificial neural networks. Once generated, the proxy model may be applied to observed operating parameters of the vehicle-based communication network to quantify a user experience of any user for any duration of the vehicle-based communication network.

The invention provides a head warping monitoring method of a photovoltaic cleaning robot and the robot. Head warping is monitored by acquiring the resistance moment of the wheel end of a walking wheel in real time. The wheel end resistance moment directly reflects the contact friction state of the walking wheel and the photovoltaic module frame, the moment is stable during normal contact, the resistance moment can be rapidly reduced if contact separation is caused by head warping, the real-time performance of monitoring is ensured through direct feedback of mechanical contact, the state change can be rapidly captured at the initial stage of head warping, and the real-time monitoring effect is achieved. And risk aggravation caused by monitoring delay is avoided. The attitude data is determined through the resistance torque difference of each walking wheel, and a precise action basis is provided for a head upwarp suppression system. And when head warping is monitored, the suppression system is driven to perform active intervention based on the attitude data, head warping is suppressed in a short time, the derailment risk is effectively avoided, and the running stability of the robot and the reliability of cleaning operation are remarkably improved.

The present invention belongs to the technical field of shield machines, and specifically relates to a distributed control system and method for the gas-liquid state in a mud and water bin of an ultra-large diameter shield machine, including a mud and water circulation and gas circulation control system, which realizes uniform distribution control of the mud and water pressure state in the bin through distributed pressure feedback and precise compensation control based on the mud and water in the front bin; realizes precise control of the mud and water pressure at the excavation interface through direct feedback of the mud and water pressure in the front bin and active regulation of the pressure in the air cushion bin; realizes control of the mud and water liquid level state in the bin through active regulation of the slurry inlet flow rate and the slurry outlet flow rate, and ensures that the amount of mud and water entering the bin matches the amount of rock and soil entering the bin from the front tunnel.

This application provides a channel information feedback method, a channel information reception method, and related apparatus. The method includes: a terminal device measuring a first reference signal to obtain channel information for N space-frequency units, where the first reference signal carries the N space-frequency units, and N is an integer greater than or equal to 1. Then, the terminal device sends first indication information and channel information for M space-frequency units. The first indication information indicates the M space-frequency units, where the M space-frequency units are some or all of the N space-frequency units, and M is an integer greater than or equal to 1. A network device infers the channel information for the N space-frequency units based on the channel information of these partial space-frequency units. The terminal device does not need to perform eigenvalue decomposition and DFT calculation on the precoding matrix; instead, it directly feeds back the channel information of a partial space-frequency unit, thereby reducing terminal complexity.