33 results about "Gain setting" patented technology

According to an embodiment, a biopotential measurement system includes an analog front-end and digital circuits. The analog front-end circuit includes a sensing electrode, a forward amplifier, and a feedback amplifier with an integration capacitor. A feature is the attenuation circuit between the forward and feedback amplifiers, which provides an attenuation factor determining the integration capacitor's value for achieving the desired high-pass corner frequency. With configurable attenuation factors, the system can process different biopotential signals. Multiple analog front-end circuits can be used to process different signals simultaneously. The digital circuit includes a processor for signal processing, dynamic adjustment of attenuation factors, and anomaly detection. Additional components like switched capacitors, pseudo-resistors, and multiplexers can enhance the system's functionality. The design allows flexible, multi-parameter physiological monitoring with adjustable frequency responses and gain settings.

Satellite Transmitter and Communication System The present invention relates to a radio unit for a satellite communication system arranged for transmitting a waveform which bears data symbols on at least one carrier. The waveform is a non-slotted signal of at least 30 seconds. The radio unit is arranged for ramping up or down the power of the waveform to be transmitted according to a predefined power profile from a start power value to a target power value via at least one intermediate power value by adjusting at least one digital or analog variable gain setting. The radio unit comprises computation means to calculate the at least one digital or analog variable gain for the at least one intermediate power value to implement the predefined power profile to ramp up or down said power of the signal to be transmitted from the start power value towards the target power value. The predefined power profile is set by at least a parameter indicative of the adjustment speed of said at least one intermediate power value. The radio unit is part of a transmitter, which can be a single-carrier or multicarrier transmitter.

A system and method for dynamic calibration of force sensor mediums is provided. The method includes: causing a force to be applied to and removed from a sensor; making force readings as the force is applied and removed; adjusting a gain setting; calculating the gain setting based on a resistance recorded at a peak force; calculating measured curves of the force readings; calculating a subsequent resistance upon a change in response to the force applied to the sensor; recording a duration that the force is applied; and calculating an absolute force based at least in part on the duration and the peak force. The method may also include: preprocessing data; training a machine learning model to align data points from the data to the baseline curve; and using the trained machine learning model to adjust the force readings in real time.

The invention relates to the technical field of audio signal enhancement, in particular to a bass enhancement sound effect processing method for an audio processor, which comprises the following steps: acquiring an audio signal and converting the audio signal into a frequency domain, extracting spectrum characteristics of a low-frequency signal, monitoring signal strength and change, calculating and adjusting dynamic gain, and updating bandwidth and gain setting of a filter. Evaluating the quality deviation between the optimized low-frequency signal and the target audio frequency spectrum, generating a low-frequency signal evaluation result, adjusting the gain and frequency response, and optimizing the audio output signal. According to the invention, by performing frequency domain analysis on the low-frequency signal, accurately extracting amplitude, frequency distribution and phase information, and calculating the dynamic gain according to the signal strength and change, the gain amount of the low-frequency signal can be effectively adjusted, the bandwidth and gain setting of the filter can be updated, the low-frequency frequency response can be optimized, and the tone quality distortion can be reduced; and through comparison with a target audio frequency spectrum, a quality deviation value is accurately calculated, and it is ensured that a low-frequency signal meets a high-standard audio processing requirement.

A control device (80) is applied to an electric vehicle (10) that conveys an object (15) and that comprises: drive wheels (12); a motor (31) for rotationally driving the drive wheels; and an inverter (34) electrically connected to armature windings (31a) of the motor. This control device comprises: switch control units (90-93) that perform switching control of the inverter in order to feedback-control the rotational speed of the drive wheels or the rotational speed of a rotor of the motor so that the same becomes a command rotational speed; and a gain setting unit (94) that makes the control gain of the feedback control variable, on the basis of the rotational speed and / or the total weight of the object and the electric vehicle.

The invention discloses a new energy frequency modulation gain setting method, device and equipment, and the method comprises the steps: collecting power system equipment parameters and new energy meteorological data, calculating the wind-solar power generation output and permeability, building an aggregation model considering the new energy permeability and frequency modulation gain, and carrying out the adjustment of the frequency modulation gain. And after a frequency variation analytic expression is extracted, a frequency modulation gain instruction is optimized and generated in two stages to complete setting. The system working condition change is dynamically matched, and the frequency modulation gain setting scheme is synchronously adjusted along with the working condition. In the first stage, the fluctuation amplitude is controlled by taking suppression of a frequency change extreme value as a target, and in the second stage, the regulation quantity is optimized in combination with stability constraint, so that large frequency fluctuation caused by unreasonable gain setting is avoided through double guarantee, and the frequency stability of the power system is enhanced; a complex setting problem is disassembled into a sum setting stage and a fine setting stage, the solving difficulty is reduced, the efficiency is improved, meanwhile, due to the fact that key influence factors are included in the aggregation model, the frequency characteristics of the system can be accurately described, and reliable support is provided for setting.

A system for measuring the load of a cable (128) associated with a lifting hook (154) of a lifting system, such as a pipe layer (100), is described. The system includes a load cell (144) for acquiring load data describing the load on the hook (154) and a controller (160) designed to control a maximum hook lowering speed based on the load on the hook (154). The controller (160) can determine the maximum speed using sensor data, such as temperature data, as well as configuration data describing the design of the machine (100) and its components, such as the types of bearings, block and pulley configurations, lubricants, and other such machine configurations, to select a speed curve (342) from a predefined set of speed curves.The control (160) allows the hook (154) to lower to the maximum speed based on the speed curve (342) and can also allow adjustment based on a gain setting (324) to scale the maximum speed setting.

The remote control device (6) is a remote control device (6) that controls one or more mobile bodies (2) via a network (1), and includes: a receiving unit (62) that receives mobile body information consisting of a first state quantity in the state quantity of the mobile body (2) and surrounding information around the mobile body; a track generation unit (63) that generates a target track (T1, T11, T12) for the mobile body (2) based on the surrounding information; a mobile body estimation unit (64a) that estimates the transmission delay of the network (1); a gain setting unit (64b) that sets a control gain based on the transmission delay; a control quantity calculation unit (64c) that calculates a control quantity for causing the mobile body (2) to follow the target track (T1, T11, T12) based on the mobile body information and the control gain; and a transmitting unit (65) that transmits the control quantity to the mobile body (2).

Decision feedback equalization (DFE) is used to help reduce inter-symbol interference (ISI). Additional equalization may also be applied to an input signal using analog front-end (AFE) circuitry with, for example, a continuous-time linear equalizer (CTLE) and / or a variable-gain-amplifier (VGA). Circuitry replicating the receiver AFE is provided with the same gain setting and an offset correction signal as the receiver AFE circuitry. In addition, a common-mode DFE tracking signal is used to correct for common-mode offsets introduced by the DFE tap values. In this manner, as a monitor threshold voltage provided to the input of the replica AFE circuitry is adjusted (e.g., swept), the AFE replica and common-mode DFE tracking compensate for gain variation and common-mode offsets introduced by the AFE circuitry and common-mode offsets due to DFE tap values thereby reducing the inaccuracies in signal eye measurements that would otherwise be introduced without these compensations / tracking.

A programmable gain amplifier that comprises: a transconductance amplifier, a switch leakage compensation circuit and a transimpedance amplifier. The transconductance amplifier provides a transconductance amplifier current signal and includes a switchable resistance network. The switch leakage compensation circuit provides a compensation current signal and comprises a switchable compensation resistance network. The transimpedance amplifier provides the output voltage signal based on the difference between the transconductance amplifier current signal and the compensation current signal. The switchable compensation resistance network comprises a plurality of branches in parallel with each other, wherein each branch includes: a gain-mimicking switch that has a corresponding gain-setting switch in the switchable resistance network; and a leakage-current-conducting switch in series with the gain-mimicking switch. The leakage-current-conducting switch is openable and closable in accordance with the complement of a switch control signal that is used to control the gain-mimicking switch in the same branch.

The utility model provides an earphone microphone sensitivity compensation calibration system and a sensitivity test device.The system comprises a main control module, a sound card power amplifier module, a sensitivity test module and an earphone module, and the main control module is provided with an acquisition unit, a comparison calculation unit, a gain setting unit and a sending unit; the acquisition unit is used for acquiring gain values of a main microphone and an auxiliary microphone of the to-be-tested earphone, so that the gain values of the main microphone and the auxiliary microphone of the to-be-tested earphone are respectively marked as a first gain value and a second gain value; the comparison calculation unit is used for comparing whether the first gain value is in a first gain value interval and whether the second gain value is in a second gain value interval. When the obtained gain value is out of the corresponding range, the absolute difference value between the gain value and the upper limit of the gain value in the corresponding range is obtained, and the difference value is written into the chip of the earphone to be tested, so that the sensitivity value calibrated last is used as the reference value in the subsequent earphone test, and the requirement of batch test can be met.

This electronic auscultation device comprises: an output means for outputting a biological sound signal representing a biological sound based on vibrations of a biological surface; a detection means for detecting the state of movement of the electronic auscultation device; and an adjustment means for adjusting the level of the biological sound signal with a gain set on the basis of the state of movement of the electronic auscultation device detected by the detection means. The adjustment means sets the gain to a first gain if the state of movement is a first state, sets the gain to a second gain higher than the first gain if the state of movement is a second state in which the stability of the movement is higher than that in the first state, and sets the gain to a third gain lower than the second gain if the state of movement is a third state in which the stability of the movement is higher than that in the second state.

A system and method for dynamic calibration of force sensor mediums is provided. The method includes: causing a force to be applied to and removed from a sensor; making force readings as the force is applied and removed; adjusting a gain setting; calculating the gain setting based on a resistance recorded at a peak force; calculating measured curves of the force readings; calculating a subsequent resistance upon a change in response to the force applied to the sensor; recording a duration that the force is applied; and calculating an absolute force based at least in part on the duration and the peak force. The method may also include: preprocessing data; training a machine learning model to align data points from the data to the baseline curve; and using the trained machine learning model to adjust the force readings in real time.

We provide TDD radio transceivers that achieve high communication quality using the sub-millimeter wave and millimeter wave bands. [Solution] The system includes a transmission temperature correction setting and holding unit 23 that outputs a transmission correction value corresponding to the temperature detected by the temperature sensor 22, and a transmission bias / gain setting circuit 24 that corrects and sets the transmission bias voltage and amplification gain for the transmission device (transmission IF unit 13, transmission frequency converter 14, transmission RF unit 15) using the transmission correction value from the transmission temperature correction setting and holding unit 23. The transmission temperature correction setting and holding unit 23 identifies the transmission correction value for the next transmission operation section during the reception operation section of the TDD, and the transmission bias / gain setting circuit 24 corrects the transmission bias voltage and amplification gain with the transmission correction value at the start of the next transmission operation section and sets them for the transmission device. The transmission device is a TDD radio that operates while maintaining the set transmission bias voltage and amplification gain during the transmission operation section.

A circuit includes a Sallen-Key filter and a programmable gain amplifier coupled to the Sallen-Key filter, the Sallen-Key filter including a source follower implementing a unity gain amplifier. The circuit is capable of implementing a programmable gain that decouples the bandwidth of the circuit from its gain setting via adjustment of a current mirror replication ratio in the programmable gain amplifier. The programmable gain amplifier can include a differential voltage-to-current converter, a current mirror pair, and a programmable output gain stage. At least one leg in the Sallen-Key filter and the programmable gain amplifier can include transistors arranged in the same circuit configuration.

The application discloses a kind of automatic driving steering angle tracking control optimization method and system based on segmented proportional feedback, it is related to steering angle tracking control technical field, including obtaining vehicle actual steering angle and target steering angle signal, error time sequence is analyzed and is divided into working section;For minimum error section, set basic proportional feedback gain, generate first gain progressive ratio in combination with speed curvature experience mapping, and form multiple sets of second gain progressive ratio control amount by random disturbance;It is applied to fine tuning compensation, collects control characteristics, and predicts fine tuning effect based on machine learning training compensation evaluation model;Finally, construct control amount-compensation evaluation diagram, filter the best gain control amount in combination with actual constraint, realize the optimization of automatic driving steering angle tracking control and response performance improvement, solve the problem that response lag, overshoot and fine tuning compensation deficiency caused by unbalanced gain setting in automatic driving steering angle tracking control.

This application discloses a Coriolis flow meter, comprising: a measuring tube; an exciter configured to drive the measuring tube according to a drive signal; a vibration pickup configured to collect vibration signals from the measuring tube, the vibration signals characterizing the vibration state of the measuring tube; and an analog drive module configured to: receive the vibration signals collected by the vibration pickup, compare the amplitude of the vibration signals with a preset amplitude to calculate the required gain setting value, and generate a drive signal based on the gain setting value; wherein the analog drive module includes a two-stage gain control circuit and a conversion circuit, and according to the gain setting value, the vibration signal is sequentially amplified by the first-stage gain control circuit and the second-stage gain control circuit to obtain an amplified signal, and the amplified signal is converted by the conversion circuit to obtain the drive signal. This application can quickly adjust the gain applied to the drive signal under complex working conditions such as gas-liquid two-phase flow to maintain the vibration of the measuring tube.

The feedback control section (121) performs feedback control on the actuator (2) based on the target transmission torque. The gain setting section (122) sets an engagement gain and a release gain, which are gains used for the feedback control performed by the feedback control section (121), and the release gain is a gain smaller than the engagement gain. The duty ratio calculation section (123) is capable of calculating an engagement duty ratio based on the engagement gain and a release duty ratio based on the release gain. The duty ratio output section (124) is capable of switching the engagement duty ratio or the release duty ratio and outputting the same as an output duty ratio based on the mode determined by the mode determination section (112). The energization control section (125) controls the energization to the actuator (2) based on the output duty ratio output from the duty ratio output section (124).

The invention discloses a gain regularization configuration circuit and method of an instrument amplifier, and relates to the technical field of analog integrated circuit design. The circuit comprises a gain resistance network, the gain resistance network is formed by combining a plurality of preset standard resistors, the gain resistance network is connected between two gain setting pins of an instrument amplifier, and the ratio of the internal integrated resistance value of the instrument amplifier to the gain resistance value of the gain resistance network is an integer; and the gain change-over switch is connected with the gain resistor network, and the gain change-over switch is set to change the combination relation of each standard resistor in the gain resistor network by switching the on-off state so as to enable the gain resistor network to form gain resistance values with different gains. According to the invention, a gain resistor configuration scheme can be provided for the instrumentation amplifier to realize regularized gain, low-cost standardized configuration is realized, and customized resistor configuration is pointed out at the same time.

Methods related to amplification of radio-frequency signals. In some embodiments, a method for amplifying a radio-frequency signal can include configuring a gain stage to be in a selected one of a plurality of gain settings, with at least some of the gain settings resulting in different phases for the radio-frequency signal. The method can further include adjusting the phase of the radio-frequency signal for the selected gain setting, such that the adjusted phase is part of desired phases adjusted from the different phases.

Aspects described herein include devices and methods for facilitating digital predistortion calibration. One aspect includes selecting a first transmission element from a plurality of transmission elements associated with a first antenna element of a plurality of antenna elements in an antenna array of the millimeter wave communication device, wherein the first transmission element is selected based on a gain setting for the first transmission element, selecting a reference transmission power for a test transmission from the first transmission element as part of a path searching operation of the millimeter wave communication device, determining a selected receive element of the plurality of receive elements based on a near field power measurement of the reference transmission power from the first transmission element using the selected receive element and a set of selection criteria, and setting a digital predistortion calibration setting using the reference transmission power and the near field power measurement.

An apparatus includes an amplifier having an input. An interface has inputs and an output. The interface is configured to: invert each bit of a value received at a first input of the interface to produce an inverted value; and provide the inverted value at the output. A processor has an input coupled the output of the interface, has first output coupled to a second input of the interface, and has a second output coupled to the input of the amplifier. The processor is configured to determine whether to set an adjustable gain setting of an audio processing block to the inverted value.

The invention provides a sensorless super-spiral sliding mode gain setting method based on a squirrel algorithm. The sensorless super-spiral sliding mode gain setting method comprises the following steps: constructing a super-spiral sliding mode observer; initializing an initial population of the squirrel algorithm, wherein the initial population corresponds to the sliding mode gain of the super-spiral sliding mode observer; evaluation indexes are obtained, the evaluation indexes comprise actual rotor information, observation rotor information and control quantity information of the motor, and the observation rotor information and the control quantity information are observed through a super-spiral sliding mode observer corresponding to the sliding mode gain; performing evaluation function calculation according to the actual rotor information, the observation rotor information and the control quantity information of the motor to obtain population fitness; updating the population in the squirrel algorithm according to the population fitness, and updating the sliding mode gain of the super-spiral sliding mode observer according to the updated population; and repeating the iteration evaluation index to obtain the sliding mode gain updating process until the maximum iteration number is reached, and obtaining the optimal sliding mode gain of the super-spiral sliding mode observer.

Sensor device which features: a first sensor arrangement (S) comprising a plurality of first sensor elements (S1-S4) configured to generate first sensor signals based on the detection of a changing magnetic field generated by a pole wheel (11) with a pole wheel pitch, wherein the first sensor signals include a first differential signal (D sp ), which defines a first measured value; a second sensor arrangement (D) comprising at least a second sensor element (D1-D6) configured to generate at least a second sensor signal based on the detection of the changing magnetic field generated by the pole wheel (11), wherein the at least one second sensor signal defines a second measured value that is phase-shifted with respect to the first measured value; a first amplifier circuit (21) configured to receive and amplify the first sensor signals in order to generate amplified first sensor signals; a second amplifier circuit (22) configured to receive and amplify the at least one second sensor signal in order to generate at least one amplified second sensor signal; and a sensor circuit (20) configured to convert the amplified first sensor signals into the first differential signal (D sp ) to convert the first measured value and to convert at least one amplified second sensor signal into a measurement signal (D dir ) to convert with the second measured value, wherein the sensor circuit (20) includes a signal processor (27) configured to determine the flywheel pitch based on the first measurement and the second measurement and to adjust a gain setting of the second amplifier circuit (22) based on the determined flywheel pitch.

A receiver includes variable gain analog front-end (AFE) circuitry, a main sampler, and a monitor sampler. The gain of the AFE circuitry is controlled by a gain indicator provided by control circuitry. The threshold voltage of the monitor sampler is provided by a digital-to-analog converter (DAC) having a controllable step size. A calibration sequence is used to search for step size settings that, for various gain indicator values, reproduce or approximate a baseline threshold voltage of the main sampler at a baseline gain setting. The relationships between these step size settings and gain indicator values may be used to ensure a close relationship between the threshold of the main sampler and the threshold of the monitor sampler over a range of gain settings.

A remote control apparatus controls at least one mobile object, and includes: a transmission latency distribution estimation unit estimating transmission latency distribution information based on transmission latency information of a transmission path obtained in advance and transmission latency information obtained online, the transmission latency distribution information including a time-changed probability distribution of transmission latencies; a trajectory generating unit generating a target trajectory of the mobile object, based on surrounding information around the mobile object; and a mobile object control unit generating a controlled amount of the mobile object, based on the transmission latency distribution information, the target trajectory, and mobile object information, wherein the mobile object control unit includes: a gain setting unit setting a control gain, based on the transmission latency distribution information; and a controlled amount computation unit generating the controlled amount, based on the target trajectory, the control gain, and the mobile object information.

The invention relates to capacitor size reduction for high pass frequencies in analog front ends. According to one embodiment, a biopotential measurement system includes an analog front-end circuit and a digital circuit. The analog front-end circuit includes a sense electrode, a forward amplifier, and a feedback amplifier having an integrating capacitor. Feature is an attenuation circuit between the forward amplifier and the feedback amplifier, the attenuation circuit providing an attenuation factor that determines the value of the integrating capacitor for achieving a desired high pass inflection point frequency. With configurable attenuation factors, the system can process different biopotential signals. Multiple analog front-end circuits can be used to process different signals simultaneously. The digital circuit includes a processor for signal processing, dynamic adjustment of attenuation factors, and anomaly detection. Additional components, such as switched capacitors, dummy resistors, and multiplexers, can enhance the functionality of the system. The design allows for flexible multi-parameter physiological monitoring with adjustable frequency response and gain settings.

These images display measured data from a vibrometer that measures the acceleration, velocity, displacement, etc. of various industrial equipment. As shown in each image, the measurement value display bar displays the current measurement value, and the length of the bar changes depending on the actual measurement value. The danger value display bar displays the danger value range that the user has set in advance. The user can set any gain for the signal to be measured, and the position of the measurement value upper limit indicator changes depending on the gain setting. The user can adjust the gain while observing the current measurement value to prevent the measurement value from reaching the danger range.

Circuit, method for audio signal processing with excursion estimation compensation, and non-transitory storage medium are provided. The circuit comprises a delay circuit, compensation filter, excursion estimator, peak detector, gain determination circuit, and gain adjustment circuit. The delay circuit is for delaying a digital audio signal to output a delayed digital audio signal. The compensation filter is for generating a compensated digital audio signal according to the digital audio signal for excursion estimation compensation for a speaker type. The excursion estimator is for determining an estimated excursion signal for the speaker type according to the compensated digital audio signal. The gain determination circuit is for generating a gain setting signal according to the estimated excursion signal and a threshold value. The gain adjustment circuit is for generating an adjusted digital audio signal according to the gain setting signal and delayed digital audio signal.

The invention relates to the technical field of small signal amplification processing circuits, in particular to a power function principle-based small signal processing circuit, which comprises a first-stage logarithm operation module, a second-stage logarithm operation module, a third-stage logarithm operation module and a fourth-stage logarithm operation module which are connected in sequence, the output end of the first-stage logarithm operation module is connected with the input end of the second-stage logarithm operation module, the purpose of outputting input signals after power function operation processing is achieved by conducting certain combination on four stages of logarithm operation circuits, and the problem that when a linear amplification circuit measures signals with a large dynamic range, the linear amplification circuit is not stable in measurement is solved. The problem that small signal amplification and amplification circuit saturation caused by strong signals cannot be considered at the same time through gain setting is solved, the gain can be automatically adjusted along with the signal input intensity, the gain is large when the input signal is weak, the gain is small when the output signal is strong, and automatic adjustment along with the signal input intensity is achieved.