147results about How to "Improve driving ability" patented technology

A portable multichannel time interference transcranial electrical stimulation system is characterized in that the portable multichannel time interference transcranial electrical stimulation system comprises an upper computer information management system and a portable multichannel time interference transcranial electrical stimulation device; the portable multichannel time interference transcranial electrical stimulation device comprises a single-chip microcomputer master control module, a power management system, a man-machine interaction module, a signal transmission module and a time interference electrical stimulation core unit. The modular design is adopted, and the number of the time interference core subunits can be increased to four through a board-to-board connector according to the requirements of users, so that four-channel time interference output with adjustable parameters is realized, the maximum output load is as high as 25 kilohms, and the driving capability of stimulation is improved. And the system has the advantages of high-precision current output, real-time monitoring and personalized management, provides convenience for data analysis and remote support for medical staff, and is beneficial to improving the treatment effect and the treatment experience of patients.

The invention relates to the technical field of motor driving, and discloses a universal integrated motor driving device, which comprises an optocoupler isolation module, an integrated logic module, a power MOS (Metal Oxide Semiconductor) tube driving module, a power module and a current-limiting protection module, the optical coupler isolation module is connected with the integrated logic module; the integrated logic module is connected with the power MOS tube driving module; the power MOS tube driving module is connected with the power module; the power module is connected with a load motor; and the current-limiting protection module is connected with the power module. According to the invention, the optical coupler isolation module, the logic processing module, the MOS tube driving module and the current-limiting protection module are modularly integrated, so that the circuit design is simplified, and the reliability and maintainability of the system are improved.

The invention discloses an anti-skid control method, device and system for a distributed wheel edge drive loader. The anti-skid control method comprises the steps that the current whole vehicle speed is estimated based on the obtained longitudinal acceleration of the loader, the measured vehicle speed of the loader and the rotating speed of each wheel edge motor; calculating the whole vehicle speed corresponding to the rotating speed of each wheel-side motor based on the rotating speed of each wheel-side motor; calculating the actual slip rate of each wheel based on the estimated current vehicle speed and the vehicle speed corresponding to the rotating speed of each wheel motor; estimating the current optimal slip rate based on the response speed of each wheel-side motor; when it is judged that a certain wheel slips on the basis of the actual slip rate and the current optimal slip rate, the anti-slip demand torque is calculated on the basis of the actual slip rate, the current optimal slip rate and the demand torque of the slipped wheel and an anti-slip algorithm, and the anti-slip demand torque is sent to a wheel edge motor corresponding to the slipped wheel. The maximum driving capacity of the loader can be achieved under the condition that it is guaranteed that the loader does not slip, and the running reliability of the loader on the road surface with the low adhesion coefficient is improved.

The embodiment of the invention discloses an electricity stealing prevention circuit applied to an electric energy meter and an acquisition terminal product, and the circuit comprises a magnetic field intensity detection module which is used for detecting the magnetic field intensity around the electric energy meter and outputting a magnetic field intensity detection signal; the signal amplification module is electrically connected with the magnetic field intensity detection module and is used for amplifying the magnetic field intensity detection signal and outputting a voltage amplification signal; the boosting module is electrically connected with the signal amplification module and is used for outputting a boosting signal according to the voltage amplification signal; and the load switch driving module is electrically connected with the boosting module and is used for outputting a tripping signal or a closing signal to a relay coil of the electric energy meter according to the boosting signal. By adopting the technical means, quantitative detection of the magnetic field intensity can be realized, and when an electricity stealing phenomenon occurs, brake-out control can be realized, and resource loss can be reduced.

The invention relates to a vehicle control method and device, a vehicle, a storage medium and a program product. In response to slipping of at least one wheel of the vehicle, driving parameters of the vehicle are obtained; for each target wheel which slips, the initial driving torque, determined by a driving anti-skid system of the vehicle, of the target wheel is obtained; correcting the initial driving torque according to the driving parameters to obtain a target driving torque; and according to the target driving torque, driving anti-skid control is conducted on the target wheel.

According to the current compensation-based level shift circuit provided by the invention, one path of low-voltage pulse signal is accessed through the first level input end and the second level output end respectively, so that the two paths of low-voltage pulse signals are converted into two paths of high-voltage pulse signals; the signals are output to the current compensation circuit and the common-mode noise elimination circuit through the first level output end and the second level output end, and the output of the current compensation circuit and the output of the common-mode noise elimination circuit jointly influence the signal states of the R end and the S end in the latch. And the latch is used for restoring the high-voltage pulse signal into a floating square wave signal with the same phase as the input signal. The level shift circuit not only can resist high common-mode noise, but also has a good inhibition effect on differential-mode noise, and the stability and reliability of the level shift circuit are effectively improved.

The invention discloses a current-steering DAC (Digital-to-Analog Converter) architecture, which relates to a microelectronic circuit technology and comprises a differential dual decoding module, a multiplexer network, a switch driving circuit array and a current source array, the differential dual decoding module comprises two decoding units with consistent structures, namely a decoding unit I and a decoding unit II; the decoding unit I is provided with an input signal input end, the decoding unit II is provided with an inverted input signal input end, the decoding unit is provided with a low-order decoding signal output end, a second decoding signal output end and a third decoding signal output end, the low-order decoding signal output end is connected with the input end of the switch driving circuit array, and the third decoding signal output end is connected with the input end of the switch driving circuit array. The second decoding signal output end and the third decoding signal output end are respectively connected with the input end of the switch driving circuit array through the multiplexer network, and the multiplexer network is also provided with a shift control signal input end. According to the invention, the problems of transmission delay and large loss of high-voltage transmission under high frequency are reduced, and the conversion rate is improved.

The invention discloses a storage battery power shortage protection circuit of an artillery power supply electrical system, which comprises a voltage sampling unit, a power shortage judgment and control unit and an electronic switch unit, and is characterized in that the voltage sampling unit is used for sampling power supply voltage of a storage battery and setting a power shortage protection point threshold value through a resistance network; a power supply sampling voltage is provided for the power shortage judgment and control unit; a comparison circuit of the power shortage judgment and control unit compares a sampled power supply voltage with an internal reference voltage, controls the on-off of a two-stage triode common emitter circuit of the post-stage driving amplification circuit through the on-off of an internal triode, and controls the power-on or power-off of a relay coil of the electronic switch unit. Therefore, the normally open contact of the relay is used as an electronic switch to realize the power distribution control of the equipment mounted on the artillery power supply system. The storage battery power shortage protection circuit provided by the invention has the characteristics of adjustable threshold value, extremely low power consumption, strong anti-interference capability and high reliability.

The invention relates to the technical field of light flexible drivers and intelligent macromolecules, in particular to a preparation method of a polymer driver for improving bidirectional shape memory driving performance, which comprises the following steps: 1) preparing a polyethylene vinyl acetate-sodium chloride particle-xylene-benzoyl peroxide mixed solution by a solution polymerization method; 2) preparing a polyethylene vinyl acetate-sodium chloride particle-benzoyl peroxide composite material; (3) peroxide thermally initiates a cross-linking reaction between free radicals and a macromolecular main chain; and 4) preparing the bidirectional shape memory porous polymer soft body driver with different driving devices.The bidirectional shape memory porous polymer soft body driver has the advantages that the self-driven reciprocating deformation, large driving deformation and complex shape change of the polymer are realized on the basis of semi-crystalline polymer thermal coupling through the change of a cross-linked network interspersed in a crystal interval, and the bidirectional reversible driving performance is further improved.

The utility model provides a voltage sampling circuit, a voltage sampling device and electronic equipment, and relates to the technical field of power electronics. The circuit comprises a first voltage division unit, a first amplification unit, a second voltage division unit, a second amplification unit and a voltage division output unit, the input end of the first voltage division unit is electrically connected with a voltage source, and the output end of the first voltage division unit is electrically connected with the input end of the first amplification unit; the output end of the first amplification unit is electrically connected with the input end of the second voltage division unit; the output end of the second voltage division unit is electrically connected with the input end of the second amplification unit; the output end of the second amplification unit is electrically connected with the input end of the partial pressure output unit, and the output end of the partial pressure output unit is electrically connected with the load. The precision of voltage sampling and the stability of the circuit can be improved.

The embodiment of the invention provides a boost power supply device, a power amplification device, a signal processing system, a power supply control method and electronic equipment. The boost power supply device comprises: a boost power supply unit for supplying power to a power amplifier according to boost power supply parameters, the boost power supply parameters at least comprising a power supply output voltage and a switching clock frequency; and the monitoring unit is electrically connected with the boosting power supply unit, detects the current amplitude of an input signal of the power amplifier, and dynamically adjusts a boosting power supply parameter corresponding to the current amplitude according to the power supply output voltage and the positive correlation between the switching clock frequency and the current amplitude. And the adjusted boost power supply parameters are provided for the boost power supply unit.

The invention provides a shift register, a driving method thereof and a gate driving circuit, relates to the technical field of display, and aims to solve the problem of Mura risk caused by difference between pixel light-emitting time and charging time due to slow reset speed of a gate driving signal output end of the shift register. The shift register comprises a coupling node, a control node, a first output node, a first output circuit and a first coupling control circuit, the first output circuit is used for controlling the connection or disconnection of the electric connection between the first first level signal input end and the gate driving signal output end under the control of the potential of the first output node; the first coupling control circuit is used for controlling the connection or disconnection of the electric connection between the coupling node and the clock signal input end under the control of the potential of the control node; the potential of the first output node is controlled according to the potential of the coupling node.

The door opening and closing actuator comprises a box body, an opening is formed in one side of the box body, a door body is hinged to the box body, the box body is connected with an execution device, and the execution device drives the door body to be opened and closed. The executing device comprises a driving mechanism and a swing arm, the driving mechanism is connected to the top of the box body, one end of the swing arm is connected to the door body, the driving mechanism is in driving connection with the swing arm, the driving mechanism drives the swing arm to stretch out and draw back, and meanwhile the swing arm rotates around the driving mechanism. The device is used for opening and closing a box door, has the advantages of few overall parts, less motor output power loss, low manufacturing cost, low failure rate, direct driving connection to a door body or a hinge, suitability for various hinges and high applicability.

The invention provides a flying shuttle. The flying shuttle comprises a main frame, a pallet fork mechanism, a lifting mechanism, a first guide rail, a second guide rail and a walking mechanism. The walking mechanism comprises a first supporting frame, a friction driving wheel, a first walking wheel assembly, a first driving piece, an adjustable pressing assembly and a second walking wheel assembly. The first driving piece is in sliding fit with the first supporting frame in the vertical direction and is in transmission connection with the friction driving wheel, and the friction driving wheel is located below the first guide rail. The adjustable pressing assembly is used for applying elastic force to the first driving piece so that the friction driving wheel can be pressed on the bottom face of the first guide rail. According to the flying shuttle, rails do not need to be additionally laid on the ground to support and guide the main frame, the occupied space of a ground area is reduced, the overall structure is more compact, the ground does not need to be damaged during installation, and an existing goods shelf can be modified on site. By means of the adjustable effect of the adjustable pressing assembly, the friction driving wheel can be tightly attached to the bottom face of the first guide rail, and the driving friction force can be flexibly adjusted.

The present invention relates to a device for controlling an engine including an electric supercharger and a method thereof. A device for controlling an engine including an electric supercharger comprises: an engine that burns fuel to generate power; a drive motor that assists the power of the engine and selectively acts as a generator to generate electric energy; a battery configured to supply electric energy to the drive motor and to be charged by the electric energy generated from the drive motor; a plurality of electric superchargers, respectively installed in a plurality of intake lines through which ambient air flows to be supplied to a combustion chamber of the engine; and a controller that adjusts the target speed of the electric superchargers of the plurality of electric superchargers, determines the driving mode of the electric superchargers, limits the maximum output of the engine, and variably adjusts the SOC power generation area of ​​the engine to charge the battery based on the determined driving tendency.

A structure for improving the TP driving capability of a display module comprises a display screen, a TPFPC, a COF and a display FPC. Golden finger binding positions are arranged on the left side and the right side of the bottom of the TPFPC. The golden finger binding positions are connected with the left side and the right side of the top of the display screen in a binding mode. The center of the bottom of the display screen and the COF are bound together through a golden finger, and the bottom of the COF and the center of the right side of the top of the display FPC are bound and connected together through a golden finger. According to the structure for improving the TP driving capability of the display module, the golden finger binding position of the TPFPC is divided into two parts, impedance distribution of a TP driving circuit can be more uniform, meanwhile, the divided golden finger binding position is symmetrically designed on the left side and the right side of a display screen with water drops, normal use of the display screen with the water drops cannot be affected, and the structure is simple and convenient to use. Therefore, the TP driving capability and the production yield can be improved, and the problem that the touch performance is affected frequently is prevented.

The invention discloses a driving and protecting circuit of an IGBT (Insulated Gate Bipolar Translator) module, and belongs to the technical field of engineering. The circuit comprises an optocoupler driving chip U1 which is used for receiving and isolating an external driving signal; the push-pull circuit is connected with the output end of the optocoupler driving chip U1 and is used for driving the grid electrode of an IGBT (Insulated Gate Bipolar Translator); and the protection circuit module is respectively connected with the optocoupler driving chip U1, the push-pull circuit and the IGBT, and is used for realizing overvoltage and desaturation detection, Miller clamping and soft turn-off functions. Compared with a traditional driving circuit, the driving circuit has the advantages of being stable in positive and negative voltage, high in driving capacity, multiple in protection function and the like, and reliability and stability of IGBT module driving are guaranteed.

This utility model discloses a round bar heating furnace, specifically relating to the field of bar heating furnace technology. It includes a furnace body with multiple electromagnetic coils in the middle. Support rollers and pressure rollers are respectively installed at the upper and lower ends of the electromagnetic coils. A lifting frame is installed at the top of the furnace body's inner cavity. Multiple stabilizing rods and connecting rods are fixedly connected to the top of the lifting frame. The top of the connecting rods extends to the top of the furnace body and is fixedly connected to a connecting frame. This utility model firstly uses fixed blocks and limiting grooves to directly limit the bar material during manual feeding. By activating an electric push rod, the lifting frame moves the pressure rollers downwards to directly squeeze and clamp the bar material located at the bottom of the support rollers, thus limiting the bar material's position. By activating a motor to sequentially control the rotation of the support rollers, stable conveying of the bar material can be achieved through their cooperation with the pressure rollers. During conveying, heating is provided by the electromagnetic coils, resulting in a heated conveying effect.

The utility model discloses a high-voltage charge pump, which comprises a boosting unit, a first capacitor, an anti-backflow unit, a first switch unit and a second switch unit. The boosting unit is connected with a first pole plate of the first capacitor, the second switch unit and power supply voltage; anti-backflow units are arranged between the second pole plate of the first capacitor and the power supply voltage and between the second pole plate of the first capacitor and the output voltage; the first switch unit and the second switch unit are alternately turned on to adjust the first pole plate voltage and the second pole plate voltage of the first capacitor; the first switch unit comprises a bias control unit and a third MOS tube, the bias control unit is used for generating bias voltage based on a second clock signal so as to control the third MOS tube to be turned on, the control end of the third MOS tube is connected with the bias control unit, the first end of the third MOS tube is connected with the power supply voltage, and the second end of the third MOS tube is connected with the first pole plate of the first capacitor. The circuit area is reduced while the driving capability is ensured, and reliable and stable boosting is realized.

The present invention relates to the field of LDO technology, and specifically discloses a low-power LDO circuit, including: a main amplifier, provided with a positive input port, a first negative input port, a second negative input port and an output port, the positive input port being a reference voltage input port; an NMOS driving tube, the gate of which is electrically connected to the output port, and the source of which is electrically connected to the load capacitor as the LDO output; a slow feedback unit, which forms a slow feedback path together with the LDO output and the first negative input port; and a fast feedback unit, which forms a fast feedback path together with the LDO output, the gate of the NMOS driving tube and the second negative input port, and the fast feedback path is used to improve the stability of the LDO circuit. The present invention ensures the accuracy of the LDO output voltage, improves the stability of the LDO circuit, saves the cost of correction and compensation outside the chip, and has strong practicality by simultaneously forming a slow feedback path and a fast feedback path in the main amplifier and the NMOS driving tube.

The invention aims to provide the communication line enhanced driving circuit, the circuit is simple, the cost is low, strong and constant driving current is provided, signal attenuation in long-distance communication can be effectively compensated, flexible switching of peripherals is supported, and the communication line driving capability is improved. The circuit comprises a dual-channel PNP-type triode, the dual-channel PNP-type triode comprises a first triode and a second triode, an emitter of the first triode and an emitter of the second triode are jointly connected to a VCC, a base of the first triode is connected with a collector of the first triode and is grounded through a resistor, and a base of the second triode is connected with a collector of the second triode. The base electrode of the second triode is connected with the base electrode of the first triode, and the collector electrode of the second triode serves as output to be connected with a load. The invention is applied to the technical field of communication systems.

This utility model discloses a piezoelectric ceramic air pump drive circuit, belonging to the technical field of piezoelectric ceramic air pump control. The circuit includes a main control processing unit, a program download unit, a low-dropout voltage regulator unit, an H-bridge piezoelectric ceramic air pump drive unit, and a DC-DC boost unit. The input terminals of the low-dropout voltage regulator unit and the DC-DC boost unit are connected to an external power supply, providing a stable low-voltage operating power supply to the main control processing unit and a high-voltage power supply to the H-bridge piezoelectric ceramic air pump drive unit. The H-bridge piezoelectric ceramic air pump drive unit uses complementary metal-oxide-semiconductor field-effect transistors to construct a full-bridge topology. The main control processing unit outputs complementary pulse width modulation signals to control the switching of the transistors in the H-bridge, generating a high-voltage alternating drive signal at the interface connecting to the air pump. This utility model features high integration, flexible control, and high drive efficiency, making it suitable for piezoelectric ceramic air pump applications requiring high-voltage, high-frequency drive.

The utility model provides an IGBT driving circuit based on a push-pull structure, and relates to the technical field of power electronic device driving, and the IGBT driving circuit comprises an optocoupler isolation module which is used for receiving a control signal and providing electrical isolation output; the push-pull driving module comprises an NPN type triode Q1 and a PNP type triode Q2 which are complementary and symmetrical; the push-pull driving module is configured as follows: when the optocoupler is conducted, Q1 is saturated and conducted, Q2 is cut off, and a driving current charges an IGBT grid electrode through R2; when the optocoupler is turned off, the Q2 is saturated and turned on, the Q1 is turned off, and the driving current flows through the R3 to discharge the grid electrode of the IGBT. Bidirectional driving current is provided through a push-pull structure, the charge charging and discharging speed of the IGBT grid electrode is increased, the switching loss is reduced, bidirectional driving current is provided through a switch-on resistor R2 and a switch-off resistor R3, the resistance value of the switch-on resistor R2 is selected to be small, the purpose of reducing switch-on loss Eon is achieved, the resistance value of the switch-off resistor R3 is selected to be large, and the purpose of reducing switch-off Vce is achieved.

The invention discloses a joint flexible driving device, a driving method and application, and belongs to the technical field of joint drive.The joint flexible driving device comprises a driving plate used for being connected with an air bag or a to-be-driven joint; the air bag and the driving plate are alternately connected in series to form a flexible driving mechanism, and the flexible driving mechanism is used for inflating or inhaling deformation to drive the to-be-driven joint; the at least one air bag is inflated and deflated at the same time, and the air bag deforms softly through differential control of inflation and suction; the air bags and the driving plates are alternately connected in series to form the flexible driving chain of the multi-stage air bags; therefore, the force transmission efficiency of the flexible part during large-angle circumferential driving is greatly improved, and the effective angle range of flexible part driving is remarkably expanded; according to the flexible joint driving device, through differential inflation and air suction control of the air bag, the air bag deforms flexibly in the driving process, the whole flexible joint driving device is flexible and transmits flexible driving force, and precision and flexibility of joint driving are facilitated.

The invention relates to the technical field of electronic information, and discloses a reference following anti-interference bidirectional current sampling method and system, and the method comprises the steps: carrying out the driving characteristic enhancement processing of a reference voltage signal, and obtaining an enhanced reference voltage signal; performing common-mode interference suppression processing on the original differential voltage signal to obtain a net differential voltage signal; performing linear amplitude adjustment on the net differential voltage signal to obtain an amplified voltage signal; mapping the amplified voltage signal into a unipolar voltage range by taking the strengthened reference voltage signal as a reference zero point to obtain a unipolar voltage signal; performing correlation coupling on the long-term characteristics and the short-term characteristics to obtain correction parameters, and performing signal reconstruction on the unipolar voltage signals based on the correction parameters to obtain optimized unipolar voltage signals; performing synchronous decoding on the optimized unipolar voltage signal based on the enhanced reference voltage signal to obtain an instantaneous current value and a flowing direction; according to the invention, the precision of bidirectional current sampling can be improved.

The invention discloses an electronic paper screen and a production method thereof. The electronic paper screen comprises an electronic paper film and a thin film transistor substrate which are sequentially arranged from the top end to the bottom end. The electronic paper film is rectangular; a VCOM electrode is arranged on the thin film transistor substrate, and a VCOM ITO electrode is arranged on the electronic paper film; the VCOM electrode and the VCOM ITO electrode are communicated through elargol arranged between the thin film transistor substrate and the electronic paper film; the silver colloid is strip-shaped; the elargol is arranged on the edge of one end of the electronic paper film where a conduction region between the VCOM electrode and the VCOM ITO electrode is located; the electronic paper film is used for displaying images; the thin film transistor substrate is used for driving and controlling pixels. The conductive area of silver colloid can be effectively increased, the driving capacity of VCOM ITO on an electronic paper film is improved, ear holes can be removed, the appearances of the electronic paper film and a PS protection film are rectangular, and the narrow frame and the high screen-to-body ratio of an electronic paper screen are achieved.

The invention provides a motor driving circuit, method and device and a storage medium. The motor driving circuit includes: a driving circuit for outputting a driving signal; the driving enhancement circuit is used for enhancing the driving signal output by the driving circuit; and the motor vibrates based on the driving signal enhanced by the driving enhancement circuit. The driving enhancement circuit is additionally arranged between the motor driving circuit and the motor, so that the driving capability of the driving signal output by the driving circuit is enhanced, the waveform change speed of the driving signal output by the driving circuit is accelerated, the motor can vibrate according to the driving signal which can only be enhanced, the starting time and the braking time of the motor are optimized, and the service life of the motor is prolonged. And a clear, crisp and trailing-free vibration effect is realized.

The invention discloses a low-dropout linear voltage stabilizing circuit, which is characterized by comprising an error amplifier, a frequency compensation circuit, a feedback loop and a power device, the output of the error amplifier is cascaded with the power device to form a circuit main loop; the feedback loop is used for providing a feedback signal reflecting the change of the output voltage of the power device, and the frequency compensation circuit adopts a power tube structure with a pseudo ESR resistor to realize frequency compensation of a main loop of the circuit together with the feedback loop; the error amplifier adopts two-stage circuits, one end of the first-stage circuit is connected with a reference signal, the other end of the first-stage circuit is connected with a feedback signal of the feedback loop, and the two signals are compared and input to the second-stage circuit in a current form; and the second-stage circuit adopts a feedforward coupled AB output stage structure, so that rail-to-rail output of the output voltage is realized, the magnitude of the current provided by the power device to the outside is controlled, and the output voltage is stable.

This invention discloses a semiconductor device and its manufacturing method, relating to the field of semiconductor technology, for reducing parasitic capacitance between adjacent memory contacts and improving the driving capability of the semiconductor device. The semiconductor device includes: a substrate, bit line structures, memory contacts, and an isolation portion. The substrate has an active region. The bit line structures are formed on the substrate and contact a portion of the active region. The memory contacts and the isolation portion are formed between two adjacent bit line structures. The memory contacts contact another portion of the active region. The isolation portion isolates two adjacent memory contacts. The material contained in the isolation portion includes a low-k material. The manufacturing method of the semiconductor device is used to manufacture the semiconductor device provided by the above-described technical solution.

The invention provides an optical element driving device, a camera module, and a camera mounting device which can realize stabilization of moving operation of a movable part and are high in reliability. The optical element driving device includes: a fixed portion; a movable part including an optical element; an ultrasonic motor-type drive unit that is disposed on an active-side member comprising either the fixed unit or the movable unit, and that moves the movable unit with respect to the fixed unit; and a power transmission unit that connects the drive unit and a passive-side member configured from the other of the fixed unit and the movable unit, and transmits the power of the drive unit to the passive-side member. The drive unit has a resonance unit having a pair of vibrating arms, and the power transmission unit has: a passive member sandwiched by the pair of arms in a biased state; and a connecting member that connects the passive member and the passive-side member, the connecting member being elastically deformable.