146results about How to "Improve linearity" patented technology

The application provides an AM-PM distortion calibration method applied to an UWB transmitter and belongs to the field of UWB communication. The method adds a sampling resistor between a linear voltage stabilizing power supply LDO and a digital power amplifier DPA driving stage of the UWB transmitter using a digital power amplifier, so as to simulate the instantaneous change of the power supply voltage of the DPA driving stage when the UWB pulse is transmitted; an adjustable delay unit is added between a carrier input port LO and the DPA driving stage; the continuous sine wave is transmitted, the phase information under each digital baseband amplitude control word is collected to form original data of the AM-PM distortion of the UWB transmitter, the digital baseband output AM-PM control word is used to control the adjustable delay unit to output the phase which is opposite to the original data and has the same size, so that the phase predistortion of the transmitted UWB pulse is realized, and the AM-PM distortion calibration is completed. The application has the advantages of simple implementation and strong compensation capacity.

This invention discloses a downconversion fluorescence thermometry method based on bilinear mode, implemented using a hardware system. The hardware system includes a 280nm light-emitting diode, two convex lenses, and a Tb... 3+ :Cs2Na 0.9 Ag 0.1 The system comprises InCl6 temperature-sensing material, a grating spectrometer, an oscilloscope, a signal generator, a computer, and a thermostat. The specific implementation steps are: signal excitation and acquisition; temperature calibration; actual temperature measurement; and high measurement accuracy: VPR mode linear correlation coefficient R² ≥ 0.998, FL mode linear correlation coefficient R² ≥ 0.992, avoiding measurement errors introduced by the exponential bias or correction term of traditional FIR technology, thus fundamentally improving temperature measurement accuracy.

This invention discloses a Z-axis micromechanical accelerometer and its control method, belonging to the field of acceleration measurement technology. An asymmetric seesaw sensing structure is constructed using mass blocks and a torsional elastic beam. Two symmetrical multifunctional capacitors are formed by designing electrodes below the two mass blocks. The torsion generated by the seesaw structure under Z-axis acceleration can be detected by the change in the differential capacitance of the capacitors, where the capacitors serve as the detection mechanism. Based on the detected change in torsion angle and the PID controller, a PWM voltage for force balance control can be calculated and applied to the symmetrical capacitors via a push-pull method, together with a DC tuned voltage. This generates a constant electrostatic negative stiffness, thereby reducing the equivalent stiffness of the seesaw sensing element, and also generates an electrostatic resultant force that can be modulated by the PWM, maintaining the position of the seesaw sensing structure constant, achieving closed-loop detection. The PWM voltage reflects the magnitude of the external acceleration.

The invention relates to an integrated braking force sensor, which comprises a pressure sensing terminal, the pressure sensing terminal is of a spoke-like structure and comprises a terminal body, a mounting groove arranged in the terminal body, and a plurality of first bulges and avoiding notches arranged on the periphery of the terminal body, positioning holes are formed in the first bulges, and the positioning holes are communicated with the mounting groove; stress isolation grooves used for isolating stress are arranged between the plurality of first protrusions and the terminal body. The sensitive element is arranged on the pressure sensing terminal; the pressure sensing terminal is used for sensing an external pressure load signal and transmitting the external pressure load signal to the sensitive element; the sensitive element is used for converting the received pressure load signal into an electric signal and outputting the electric signal; and the printed circuit board is mounted in the mounting groove, is connected with the sensitive element and is used for processing the electric signal output by the sensitive element to obtain an output signal. The force sensor is easy to process, the production and manufacturing cost is reduced, the pressure sensing terminal adopting the spoke-imitating structure is excellent in performance and can be integrated on the calipers to serve as a structural part, and the internal space of the calipers is greatly saved.

An overlock machine for processing mattresses includes: a sewing machine, a worktable, a mattress support platform, a conveyor belt, a transmission guide device, a vacuum adsorption structure, and a placement area. The sewing machine is fixed to the worktable, which is symmetrically arranged on both sides of the mattress support platform. The conveyor belt is mounted on the mattress support platform. The transmission guide device is located between the mattress support platform and the worktable. The vacuum adsorption structure is located below the mattress support platform. The placement area is connected to the end of the mattress support platform. The transmission guide device includes: a baffle, a baffle bracket, rollers, a fixing plate, and an adjusting screw. Compared with traditional technologies, this invention, tailored to the characteristics of mattresses, adds a transmission structure, a transmission guide device, and a vacuum adsorption structure. Through automated movement, it ensures a certain fixing force, reducing the difficulty of worker operation, improving the straightness of the overlock process, and reducing the scrap rate.

The invention belongs to the technical field of integrated chips, and particularly relates to a bias circuit of a radio frequency power amplifier and the radio frequency power amplifier, which comprises a first transistor Q0, a second transistor Q1, a third transistor Q2, a fourth transistor Q3, a fifth transistor Q4, a sixth transistor Q5, a seventh transistor Q6 and an eighth transistor Q7, a sixth transistor Q5 is adopted as a sampling structure and an eighth transistor Q7 is adopted as active negative feedback, so that the influence of process errors and temperature change on the transistors is used for compensating the influence of temperature on the fifth transistor and the first transistor, and the transfer of a quiescent working point is greatly corrected; meanwhile, according to the scheme, an active negative feedback path can be formed at the base electrode of the power supply transistor Q1 and an output signal port, and the linearity is further improved.

The invention belongs to the field of integrated circuit design, particularly relates to a fractional frequency divider circuit based on a digital time converter, and aims to solve the performance bottleneck caused by quantization errors in a fractional frequency division phase-locked loop. The circuit comprises three core modules, namely a differential integral modulator, a pulse swallowing multi-modulus frequency divider and a constant-slope digital time converter, wherein the differential integral modulator generates a multi-modulus frequency divider control word and a digital time converter control word according to integer and fractional frequency control words; the pulse swallowing multimode frequency divider receives an output signal of the voltage-controlled oscillator, and outputs a signal D1 and a time sequence control signal after frequency division processing; the constant slope digital-to-time converter time-converts D1 based on a control word and a timing signal, and outputs a delayed clock signal to counteract a quantization error. The femtosecond-level time delay circuit adopts an optimized circuit architecture design, has the characteristics of simple structure and low power consumption, realizes femtosecond-level time delay precision and high linearity, effectively inhibits phase noise and stray, is adaptive to various analog fractional frequency division phase-locked loop structures, remarkably improves the frequency spectrum purity and the system suitability of a clock generator, and has a wide application prospect. And the application requirements of the high-performance fractional frequency division phase-locked loop in the fields of wireless communication, radar and the like are met.

The present invention discloses a four-quadrant analog multiplier circuit and a control method based on a memristor. The analog multiplier circuit based on a memristor mainly includes a sign conversion circuit, an external control circuit, a memristor control circuit, a Cascode current mirror circuit composed of NMOS transistors, and a Cascode current mirror circuit composed of PMOS transistors. Among them, the Cascode current mirror circuit composed of NMOS transistors and the memristor control circuit form a first-quadrant memristor analog multiplier circuit, and the Cascode current mirror circuit composed of PMOS transistors and the memristor control circuit form a second-quadrant memristor analog multiplier circuit. The sign conversion circuit mainly converts the input signal into a signal in the first and second quadrants and inputs the signal into the corresponding quadrant memristor analog multiplier circuit. After receiving a positive input signal, the external control circuit outputs the control voltage required by the memristor analog multiplier circuit. Compared with the existing analog multiplier circuit, the memristor analog multiplier has higher linearity and accuracy, and the circuit structure and operation process are relatively simple.

The invention discloses a time-to-digital converter based on a vernier double-chain structure, and relates to the technical field of integrated circuits. The converter comprises a signal holding circuit, a vernier double-chain rough measurement module, a data selector, a special time amplifier module and a digital coding unit, the vernier double-chain rough measurement module is composed of a main delay chain and a vernier delay chain, and 10ps-level rough measurement is achieved by adjusting the width-to-length ratio of an MOS tube of a phase inverter to control the delay difference of a unit. The data selector gates a residual time difference signal to the special time amplifier module, and the special time amplifier module is matched with a transmission gate through an RC network to realize 11mV / ps high-linearity time-voltage conversion; the digital coding unit integrates the rough measurement result and the accurate measurement result, and finally the 3.0 ps system resolution is achieved. A'rough measurement-fine measurement 'two-stage measurement architecture is adopted, a single-amplifier time division multiplexing design is adopted, a measurement dead zone is effectively eliminated, the chip area and power consumption are greatly reduced, and the device is particularly suitable for high-precision time measurement application such as laser radar and quantum calculation.

The utility model provides a kind of bending device of wood board bending equipment, belong to plate production technical field.It solves the technical problems such as existing bending machine cannot bend the board of larger length, the effect is not good after bending for the board of larger length etc..Two bending supports in the bending device of the wood board bending equipment are set apart along wood board conveying direction, arc-shaped bending tooth disc is set on each bending support, both sides of bending tooth disc are provided with protruding teeth, driving gear is set on the outside of bending tooth disc, driven gear is set in the inside, driving gear and driven gear can be rotatably fixed on mounting plate, driving gear is connected with bending driving part on mounting plate, connecting plate is set between two bending supports, both ends of connecting plate are fixedly connected with mounting plate, and board can be rotated with connecting plate.The utility model has the advantages that larger length board can be processed, and bending effect is good.

This invention provides a distributed electro-hydraulic hybrid drive hydraulic system for a loader and its control method. It includes a power supply system, a steering drive subsystem, an electro-hydraulic hybrid working subsystem, and a vehicle controller. The steering drive subsystem uses a pure electric cylinder drive and is decoupled from the working system. The electro-hydraulic hybrid working subsystem includes large and small flow motor pump sets, a distribution valve group, working cylinders, and an accumulator. The vehicle controller identifies the working condition based on the collected signals, controlling the small pump to operate independently under low flow conditions, and switching to the large pump or coordinating oil supply under high flow conditions. Pressure energy is recovered through the accumulator, and potential energy is converted into electrical energy using a motor pump with four-quadrant working capability. This application can eliminate steering throttling losses, optimize power matching under all working conditions, achieve multiple composite energy recovery, and significantly improve the overall machine energy efficiency and handling linearity.

The utility model is suitable for the technical field of electronic circuits, and provides a dimming circuit of a multi-section light emitting diode and lighting equipment, the circuit comprises a power supply output circuit, a whole-section light emitting diode LED, an LED dimming circuit and an LED constant-current driving circuit, the power supply output circuit is connected with the whole-section LED comprising a plurality of sub-section LEDs and used for providing power for the whole-section LED, and the LED dimming circuit is connected with the LED constant-current driving circuit. Outputting a line network voltage value; the LED dimming circuit is respectively connected with the power supply output circuit and the whole section of LED and is used for sampling the network voltage value and the whole section of voltage difference value of the whole section of LED and respectively outputting a silicon controlled rectifier control signal value and a dimming voltage value; and the LED constant-current driving circuit is respectively connected with the LED dimming circuit, each sub-segment LED and the power supply output circuit, and is used for providing constant current for each sub-segment LED according to the dimming voltage value and determining to open or close a silicon controlled discharge circuit in the LED constant-current driving circuit according to the silicon controlled control signal value. Therefore, the linearity of low-luminance dimming is effectively improved.

The invention relates to the field of detection, in particular to a method for determining the residual quantity of methoprene and methoprene in citrus through pre-column derivatization liquid chromatography-tandem mass spectrometry, and the method comprises the following steps: S1, preparation of a standard sample and a to-be-detected sample: S11, preparation of the standard sample, and S12, preparation of the to-be-detected sample; s2, preparation and derivation of a standard sample solution and a to-be-detected sample solution: S21, extraction, S22, purification and S23, derivation; s3, measuring; s4, establishing a linear equation; and S5, analyzing the sample to be detected. The technical problems that in the prior art, the ionization efficiency of methoprene and methoprene in the electrospray process is low due to the non-polar property of methoprene and methoprene, and electrospray ionization tandem mass spectrometry detection of methoprene and methoprene lacks the sensitivity required by trace analysis can be solved. The detection sensitivity of methoprene and methoprene in citrus fruits can be obviously improved.

This invention belongs to the field of motor technology and discloses a high-linearity finite-angle torque motor, comprising a cylindrical rotor and a cylindrical stator, with the rotor housed within the stator. The stator includes N coils and N constant magnetic circuit channels, where N is an even number of at least 2. The rotor's magnet portion has N polarities. The N coils of the stator are evenly arranged circumferentially on the inner side of the stator, with adjacent coils separated by constant magnetic circuit channels. The ends of all coil frames and the ends of the constant magnetic circuit channels together form the rotor's rotational track. Adjacent stator coils have opposite polarities after being energized, and adjacent rotor magnets also have opposite polarities. This invention employs a special stator lamination structure, theoretically eliminating stator cogging torque within the motor's operating angle range, thus improving the linearity of the motor's output torque. Compared to traditional slotted finite-angle torque motors, the output torque fluctuation is reduced by more than 70%.

This invention belongs to the field of time measurement technology and discloses a resource-saving short-chain time-to-digital converter and its conversion method. It utilizes a delay unit and conversion circuit to build a local oscillator, which flips the output state at fixed time intervals during a continuous high-level input signal. The time at which the local oscillator causes the level to flip is known. The time of the last flip is obtained using TDL and TDC, and the start and last flip times are obtained by recording the number of flips of the local oscillator. The resource-saving short-chain time-to-digital converter provided by this invention has good linearity, completely avoiding nonlinearity problems caused by inconsistent line lengths introduced across multiple resource blocks. The resource-saving short-chain time-to-digital converter has a simple and flexible structure, low resource consumption, and high utilization rate. It has good robustness and can be directly ported between different channels or even devices, and can correct temperature-induced drift online.

The invention relates to the technical field of elastic bushings, in particular to a magneto-rheological elastomer bushing for an automobile suspension and a vehicle suspension system. The magneto-rheological elastomer bushing comprises an inner sleeve and an outer sleeve which are coaxially arranged; the magnetorheological elastomer layer is filled between the inner sleeve and the outer sleeve, and the magnetorheological elastomer layer serves as a main bearing and rigidity adjusting component; the magnet exciting coil is arranged on the inner sleeve or the outer sleeve, and the magnet exciting coil applies a magnetic field to the magnetorheological elastomer layer to adjust the radial rigidity of the magnetorheological elastomer layer; the magneto-rheological elastomer composite material further comprises at least one magnetic conductive reinforcing piece which is arranged in the magneto-rheological elastomer layer in the radial direction, and the magneto-rheological elastomer layer is divided into at least two sub-layers in the radial direction by the magnetic conductive reinforcing piece. The rigidity of the vehicle can be instantly improved to enhance the control stability when high supporting performance is needed, the rigidity can be instantly reduced to optimize the riding comfort when high vibration filtering performance (such as a bumpy road surface) is needed, and dynamic intelligent balance between the two is achieved.

The application provides a unilateral detection system and a vehicle. The unilateral detection system comprises a voltage dividing circuit, an amplification circuit, an isolation circuit, an output circuit and a controller. The voltage dividing circuit divides the voltage of a high-voltage DC bus to obtain a first output voltage. The amplification circuit is connected with the voltage dividing circuit. The isolation circuit is connected with the amplification circuit and the voltage dividing circuit. The output circuit comprises a first operational amplifier and a first resistor. The non-inverting input terminal of the first operational amplifier and one end of the first resistor are connected with the sixth terminal of the isolation circuit. The inverting input terminal of the first operational amplifier is connected with the output terminal of the first operational amplifier. The other end of the first resistor is grounded. The first operational amplifier generates a second output voltage. The controller determines the voltage of the high-voltage DC bus based on the second output voltage. The system can monitor the voltage of the high-voltage DC bus in isolation, so as to discover abnormal conditions of the voltage in time. The system has high safety in use due to the isolation circuit.

The application discloses a GaAs-based low-capacitance high-bandwidth PIN photodiode and a preparation method thereof, and relates to the technical field of semiconductors.The PIN photodiode comprises a GaAs substrate, a deformation growth layer and an InP-based PIN functional layer.The deformation growth layer is used for realizing the lattice constant transition from the GaAs substrate to the InP-based PIN functional layer.The InP-based PIN functional layer comprises an n-type contact layer, a first intrinsic layer, an intrinsic absorption layer and a window layer, and the first intrinsic layer is provided with an ion implantation modification area, which is used for forming a high-resistance area to reduce the effective electrical junction area of the device.The application realizes the heterogeneous integration of the GaAs substrate and the InP-based PIN functional layer through the deformation growth layer, significantly reduces the device cost, realizes the physical decoupling of the photosensitive area and the electrical junction area through the ion implantation modification area, and significantly reduces the intrinsic junction capacitance while maintaining a large optical aperture, thereby systematically solving the inherent contradiction among the bandwidth, the responsivity and the cost in a high-speed PIN-PD.

The disclosure provides a multi-modal neuron structure, comprising a reference voltage generation module and a pulse generation module, the reference voltage generation module comprises a first reference voltage generation module and a second reference voltage generation module, the first reference voltage generation module generates a first reference voltage, and the second reference voltage generation module generates a second reference voltage; the pulse generation module is connected with the reference voltage generation module, an input end of the pulse generation module is used for receiving a frequency-coded pulse sequence or a time-coded pulse sequence, and the pulse generation module comprises a first charge packet counter sub-circuit, a second charge packet counter sub-circuit and a mode signal input circuit. The disclosure can receive a frequency-coded pulse sequence or a time-coded pulse sequence, has a simple structure, occupies a small area, and is suitable for various forms of pulse sensors.

The invention discloses a notch reconfigurable ultra-wideband antenna for cognitive radio, and belongs to the technical field of wireless communication and antenna design. The antenna comprises a dielectric substrate, a main radiation patch, a microstrip feeder line and a notch structure patch are arranged on the front side of the substrate, a floor with a defected ground structure is arranged on the back side of the substrate, and a micro stepping motor system is further arranged; the copper column is embedded into the longitudinal through groove of the notch structure patch in a clearance fit mode, the motor drives the copper column to linearly slide, inductance-capacitance parameters of a resonance circuit are changed, and an adjustable resonance circuit is constructed; the main radiation patch optimizes ultra-wideband impedance matching, the defected ground structure expands high-frequency bandwidth, continuous reconstruction of 4.2-7.45 GHz trapped wave center frequency can be realized, and related electromagnetic interference can be accurately suppressed. Zero static power consumption is achieved through physical displacement tuning, high linearity and high robustness are achieved, and the method has high practical value in the fields of cognitive radio, short-distance communication and the like.

The application discloses a wideband ADC driving amplifier based on an InP HBT process, which comprises a biasing module and an amplifier module connected with each other. The biasing module utilizes the negative temperature coefficient characteristic of a transistor VBE to generate a positive temperature coefficient current, and provides the positive temperature coefficient current bias for the amplifier module, so that the gain variation of the amplifier under high-temperature and low-temperature conditions can be reduced. The application effectively improves the linearity of the amplifier.

This invention discloses a time amplifier with self-cancelling quantization noise and a fractional-frequency division phase-locked loop (PLL), belonging to the field of frequency synthesis technology. The self-cancelling quantization noise time amplifier of this invention is based on a resistor-discharge type time amplifier. A control signal containing quantization error information is output through a slow-slope control signal generator to control the slow-discharge path of the time amplifier. This achieves K-fold time error amplification while simultaneously canceling fractional-frequency division quantization noise. The PLL architecture built based on this amplifier eliminates the need for a large-delay loop digital-to-time converter. The phase noise of the slow-slope control signal generator is suppressed by the time amplification gain, breaking the performance trade-off of traditional architectures. This invention achieves a low-noise, low-power, and high-linearity fractional-frequency division PLL design without degrading the performance of the time amplification phase detector.

The invention provides a gas-sensitive optical fiber leakage monitoring and accurate positioning system, which belongs to the field of gas monitoring, and is characterized in that a light source module generates first wavelength laser and second wavelength laser, the first wavelength laser and the second wavelength laser are combined by a wavelength division multiplexer to obtain dual-wavelength composite laser, and the dual-wavelength composite laser is transmitted to each sensing node module through an optical fiber transmission channel; the sensing node module divides the dual-wavelength composite laser into power supply light and signal light, the power supply light is converted into electric energy through photoelectric conversion, a layered heterogeneous gas-sensitive material structure is adopted to detect the environmental gas concentration and output a voltage signal, and phase modulation is performed through a ferroelectric liquid crystal element; the signal processing module calculates according to the modulated signal light to obtain a gas concentration value at each sensing node module and a spatial position of a leakage source; and the control processing module receives and processes the spatial position of the leakage source and the gas concentration value and gives an alarm. According to the invention, simultaneous monitoring and identification of multi-component gas are realized, and high-precision monitoring and accurate positioning of leakage of various gases are realized.

The invention provides an epitaxial structure of a gallium nitride thin film and a preparation method, and relates to the technical field of semiconductors, and the epitaxial structure comprises a substrate, a buffer layer, a GaN thin film, an AlGaN barrier layer and an insulating layer which are sequentially laminated; the insulating layer is provided with a plurality of rectangular gate slots, a first source slot and a second source slot. The bottom of the first source slot and the bottom of the second source slot extend to the bottom of the AlGaN barrier layer. The comb-shaped grid is provided with a plurality of rectangular grid roots matched with the rectangular grid root slots; the width of each rectangular gate heel in the longitudinal direction of the epitaxial structure and the distance between the adjacent rectangular gate heels are constrained by the actual intrinsic transconductivity of the epitaxial structure; when a break-over voltage is applied to the comb-shaped grid electrode, the two-dimensional electron gas layer between the multi-contact pin source electrode and the multi-contact pin drain electrode is conducted, a conductive channel is formed, the stability of source electrode access resistance is improved, the non-linear change of the source electrode along with the current or voltage is reduced, and the linearity of the epitaxial structure is further improved.

The application relates to a liquid rocket engine test heating device, in particular to a liquid rocket engine inner cavity induction heat accumulation type hot nitrogen gas supply device and method, and solves the technical problem that the existing low-temperature liquid rocket engine usually adopts an external hot air forced convection or electric heating wire heating nitrogen gas mode to heat the pipeline and the engine inner cavity nitrogen gas, and it is difficult to meet the low-temperature liquid rocket engine pipeline and engine inner cavity rapid temperature recovery requirement. The liquid rocket engine inner cavity induction heat accumulation type hot nitrogen gas supply device comprises a heating unit, a pressure monitoring unit, a temperature monitoring unit and a control unit; the heating unit comprises a buffer tank and a heating assembly arranged on the buffer tank; an air inlet of the buffer tank is used for being connected with an air source; the pressure monitoring unit and the temperature monitoring unit are arranged on the buffer tank and are connected with the control unit respectively; and the control unit is used for controlling the heating assembly to work according to the inner cavity nitrogen gas temperature and the outer wall temperature of the buffer tank.

The application provides a differential detection system of a high-voltage direct-current bus and a vehicle, the system comprising a differential sampling circuit, a first operational amplifier, an isolation circuit and a signal processing circuit; the differential sampling circuit is connected with a positive electrode and a negative electrode of the high-voltage direct-current bus and grounded; the inverting input end of the first operational amplifier is connected with the differential sampling circuit and the output end of the first operational amplifier, and the non-inverting input end of the first operational amplifier is connected with the negative electrode of the high-voltage direct-current bus and the common ground of the differential sampling circuit; the isolation circuit is connected with the first operational amplifier and the differential sampling circuit, and is connected with a power supply voltage and grounded; the signal processing circuit is connected with the isolation circuit, and the signal processing circuit determines the voltage of the high-voltage direct-current bus based on the output current of the isolation circuit. The system performs double-end sampling on the voltage of the high-voltage direct-current bus through differential sampling, has high sampling accuracy, high anti-interference ability, and is provided with the isolation circuit, and thus has high overall use safety.

This invention discloses a transimpedance amplifier circuit for 50GPON. The main links of the transimpedance amplifier include a core amplifier, a burst switched-capacitor coupling module, a single-ended to differential variable gain amplifier, an output driver, a first automatic gain control module, a second automatic gain control module, a differential offset cancellation module, a differential amplifier, and a DC voltage operating point module. A current signal is input from the IN terminal, converted into a single-ended voltage signal by the core amplifier, and transmitted to the burst switched-capacitor coupling module. After processing, one end outputs a signal with a DC voltage boost, and the other end outputs the average signal voltage, which serves as the input common-mode level for the single-ended to differential variable gain amplifier. The single-ended to differential variable gain amplifier converts the single-ended signal voltage into a differential voltage. The output driver transmits this differential signal to the next stage chip, ensuring impedance matching during transmission.

The present disclosure relates to a receiving signal sampling device and a chip, the receiving signal sampling device comprising: a decision feedback equalization module comprising a first current adjusting array circuit, configured to receive at least one feedback cancellation signal and a weight strength control signal, generate a decision feedback equalization adjusting signal according to the at least one feedback cancellation signal, and control the strength of the decision feedback equalization adjusting signal through the first current adjusting array circuit according to the weight strength control signal; a dynamic comparison module coupled to the decision feedback equalization module, configured to receive a differential input signal and the decision feedback equalization adjusting signal, and generate a comparison regeneration signal according to the differential input signal and the decision feedback equalization adjusting signal; and a latch module coupled to the dynamic comparison module, configured to receive the comparison regeneration signal, and generate a decision output signal according to the comparison regeneration signal. The present disclosure helps to achieve the purpose of high integration and small size of the receiving signal sampling device.

The application discloses a time domain residual error amplifier for a pipeline analog-to-digital converter, comprising a threshold detection circuit, a voltage amplification circuit and a phase detector; wherein the voltage amplification circuit is connected with the threshold detection circuit and the phase detector respectively; the threshold detection circuit is connected with the phase detector; the voltage amplification circuit comprises a first-stage sampling capacitor, a second-stage sampling capacitor and a constant current pull-down charge pump. The constant current pull-down charge pump discharges the first-stage sampling capacitor at a constant speed through a mirror current of a current mirror, and converts the residual error voltage reserved by the first-stage sampling capacitor into a time signal; the phase detector controls the second-stage sampling capacitor to charge and discharge according to the triggering condition of the threshold detection circuit, and converts the time signal back into a voltage signal. The time domain residual error amplifier for the pipeline analog-to-digital converter provided by the application can realize voltage gain in the form of the product of the proportion of a capacitor and the proportion of a current mirror current, and can optimize linearity and PVT robustness while retaining low power consumption characteristics.

This invention provides a triaxial force sensor, comprising an elastic body and a strain gauge assembly. The elastic body includes connecting cylinders at both ends and a strain force detection area in the middle. The strain force detection area in the middle of the elastic body is configured as a weak connection structure, which includes at least four strain beams. The area enclosed by the strain beams is arranged in a square shape on the projection plane. The strain gauge assembly is attached to each strain beam. This invention can accurately measure forces in three mutually perpendicular directions and has the advantages of simple structure and fast response speed.