39results about How to "Guaranteed output stability" patented technology

The invention discloses an adaptive electric leakage compensation circuit for an LDO (low dropout regulator). The grid electrode of the power supply PMOS transistor MPP of the LDO is connected with the output of an error amplifier EA. The circuit is characterized in that the circuit is connected between the source electrode and drain electrode of the MPP; a sampling PMOS transistor MPS and a pairof NMOS transistors are connected so as to form the circuit; the grid electrode of the MPS and the common source electrode of the MPP and the MPS are connected with input VIN; the common drain electrode of the MPP and the MN2 is output VOUT; the common drain electrode of the MPS and the MN1 is connected with the common grid electrode of the MN1 and the MN2; the common-source of the two NMOS transistors is grounded; the size ratio of the MPS to MPP is 1:K1; the size ratio of the MN1 to MN2 is 1:K2; and K2 is greater than K1. The adaptive compensation circuit is simple in structure and practical; generated leakage current is tracked adaptively through the sampling PMOS transistor; the leakage current is completely pulled out through the two connected NMOS transistors; the output stability ofthe LDO in a temperature conversion environment can be guaranteed; and no quiescent current is generated in the circuit at the normal temperature, so that the optimization of design parameters is facilitated.

The invention discloses a touch scanning circuit, a driving method thereof, a touch driving circuit and a touch display screen. The touch scanning circuit comprises an input unit, a first control unit, a second control unit, a displacement output unit and a touch output unit; wherein the input unit is used for controlling the potential of a first node; the first control unit is used for controlling on and off between the first node and a third node; the second control unit is used for controlling the potential of a second node; the displacement output unit is used for controlling the potentialof a displacement output end according to the third node and the second node; the control output unit is used for controlling signals output by a touch output end according to the second node, the touch output end and a first clock signal end. The touch scanning circuit in a simple structure is realized by the aid of the matching of the five units.

This invention relates to a two-way 4-20mA DC analog volume output device based on FPGA control different from the circuit controlling single DAC chips with the SPI interface of a master CPU, which can simulate two-way SPI communication line by the IO interface of FPGA and converts parallel digital information given by the master CPU to a serial digital flow required by the DAC and outputs it to realize DC analog volume output of 4-20mA, and the device is composed of a high speed optical isolator, a D/A converter, an operational amplifier and a voltage primary source, in which, the high speed optical isolator, the D/A converter and the operational amplifier are serial in sequence, the voltage primary source is connected with the converter and the amplifier, the input of the isolator is the input of the device and the output of the amplifier is the output of the device.

The invention discloses a tab positioning method, a tab processing system and a storage medium, and the method comprises the steps: obtaining a path distance L of a tab conveyed from a tab processing position to an observation position, calculating a difference value between the L and a preset tab distance Sn, and obtaining a target distance; and when the previous tab passes through the observation position, the previous tab is continuously conveyed by a target distance S, and at the moment, the position, corresponding to the tab processing position, on the pole piece is the position of the target tab. When the position of the target tab is determined, the target pulse signal is obtained according to the target distance S instead of the preset tab distance Sn, and the target distance S is far smaller than the preset tab distance Sn, so that the number of the target pulse signal is small, and the position of the target tab is determined. And the probability of slipping, pulse loss, jumping instability and the like in the execution process of a few pulse signals is low, so that the tab positioning precision is improved, a guarantee is provided for subsequent tab welding or cutting, and the final product quality is improved.

The invention relates to a four-stator-rotor series connection ultrasonic motor which comprises a middle stator base, the middle stator base is coaxially arranged on a shell, a bearing is arranged in an inner cylindrical hole of the middle stator base, and a stator elastomer assembly is coaxially arranged on the end face of an inner side boss; the output shaft penetrates through a bearing on the middle stator seat and is fixed on an inner ring of the bearing by using a locking nut; two flexible rotor assemblies are coaxially arranged on the two end faces of a flange plate in the middle of the output shaft respectively, the two flexible rotor assemblies at each end are installed in a back-to-back mode, and adjusting gaskets are arranged between the flexible rotor assemblies and between the flexible rotor assemblies and the flange end faces of the output shaft. Stator elastomer assemblies are coaxially arranged on the surfaces of bosses on the inner sides of stator bases coaxially installed at the two ends of the shell. A PCB, a PCB cover shell and a cable fixing sleeve are arranged on the plane of one side of the shell, a flexible printed board on the stator elastomer assembly is welded to the PCB, and a wire is led from the PCB. The motor has the characteristics of high output torque, high power, compact structure and the like.

The invention relates to a thin film solar cell and a manufacturing method of the thin film solar cell. The thin film solar cell at least comprises a thin film solar cell panel and a degradable film, wherein the degradable film covers at least a part of the light receiving face of the thin film solar cell panel, and the degradable film is used for lowering the average light transmission rate of the thin film solar cell. The manufacturing method of the thin film solar cell includes the steps of providing the thin film solar cell panel, and forming the degradable film on at least a part of the light receiving face of the thin film solar cell panel. According to the thin film solar cell and the manufacturing method of the thin film solar cell, the use safety performance and the use efficiency of the thin film solar cell can be ensured, the problem that the excessive design is habitually required to deal with light recession can be solved, and therefore the cost is reduced.

The invention discloses a contact-type image sensor. The contact-type image sensor is provided with a preset scanning surface corresponding to a to-be-scanned surface of a manuscript. The contact-typeimage sensor comprises a time sequence generation circuit which is used for generating a light source control signal LRDT and a line scanning control signal TRIG1; a light source which is used for irradiating the manuscript; a lens which is used for collecting the reflected light emitted by the light source and reflected by the manuscript and emitting the reflected light to a photoelectric conversion chip; the photoelectric conversion chip which is used for converting the received optical signal into an electric signal; and a data processing unit which is used for receiving and processing theelectric signal output by the photoelectric conversion chip according to a trigger pulse TRIG sent by an encoder for transmitting an object to be detected. The photosensitive signals output by the photoelectric conversion chip are the same, so that the output stability, the dynamic range and the sensitivity of the image sensor are guaranteed.

The invention discloses a roasting furnace for manufacturing biomass energy. The roasting furnace comprises a powdery material input connection pipe, an air preheating chamber, a powdery catalyst input connection pipe, a primary treatment chamber, a high-temperature reaction bin, a heat recovery chamber, an air exhaust pipeline, an air exhaust port, a solid-gas separation chimney, a chimney base,a biomass energy powder recovery pipe and a base, wherein the left portion of the air preheating chamber is provided with the powdery material input connection pipe, the powdery material input connection pipe is fixedly connected with the air preheating chamber through a bolt, the left end of the powdery material input connection pipe is connected with material conveying equipment, and the right side of the air preheating chamber is provided with the primary treatment chamber. The roasting furnace for manufacturing the biomass energy has the advantages that the mixing effect is improved, the stability and reliability of the output temperature can be effectively ensured, the subsequent treatment effect is effectively improved, the problem of the explosion caused by the use of the air for production is solved, and the safety and reliability of the work of the roasting furnace are improved.

The invention relates to civil engineering equipment, in particular to uniform tensioning and laying equipment for a large-gradient long-distance slope geocell. The technical problems that an existing geocell laying device is large in structure and is only suitable for construction of a slope protection with the small gradient and the short length due to the influence of the structure, a geocell pulled into a net shape cannot be fixed in time, manual fixing is needed, the steps are complex, and the construction progress is slow are solved. According to the technical scheme, the uniform tensioning and laying equipment for the large-gradient long-distance slope geocell comprises a first cart, a second cart, a power system and the like; a power system is connected between the first cart and the second cart; the power system is used for laying the geocell to be laid from top to bottom. By adjusting the angle of the power assembly, the power system can adapt to different slope protection angles, then the power output stability of the power assembly is kept, and the to-be-laid geocell can be laid on the long-distance slope protection by adjusting the power assembly.

The invention provides a separation waveband background light simulator used for detecting laser radar performance. The separation waveband background light simulator comprises a control module, a background light feature database, an adjustable constant-current source driving circuit, a light source module, an illumination optical system, a sampling feedback circuit, an illuminance sensor and a feedback control circuit. The introduced illumination optical system comprises a spotlight cover, an optical integer, an aligning lens and a light outlet, and light focusing, light homogenizing and aligning can be realized, so that the system can accurately simulate sunlight illuminance of a plurality of wavebands, and simulate the alignment property and illuminance uniformity of the sunlight well;and the introduced background light feature database can simulate the background light interference at specific wavelengths under different atmospheres. The separation waveband background light simulator is suitable to be taken as a background light interferer for use in indoor detection of the laser radar performance room in detection, and has the excellent advantages of definite principle, simple structure and stable work.

The invention discloses an electric energy meter, comprising a microprocessor, a storage module, an electric energy metering module, an infrared and carrier wave communication module and a power module, wherein the microprocessor is connected with the storage module, the electric energy metering module and the infrared and carrier wave communication module respectively; the power module is connected with the microprocessor, the storage module, the electric energy metering module and the infrared and carrier wave communication module; and the power module is a low power consumption DC/DC (Direct Current/Direct Current) power module. The electric energy meter is lower in power consumption.

The invention discloses a fuel distributor, which comprises a fuel distributor body. The invention has the main key that the fuel distributor also comprises a pressure release valve for eliminating residual gas in a cavity of the fuel distributor body. According to the fuel distributor disclosed by the invention, the pressure release valve is additionally arranged on the fuel distributor, thus, bubbles mixed in the fuel distributor are reduced under the action of the pressure release valve, the uniform distribution effect of fuel is enhanced, and the oil injection amount is ensured to be sufficient, thereby, the output stability of engine power is guaranteed.

The present invention provides an emission control driver and a display device thereof. The emission control driver comprises a plurality of emission stages, wherein the emission stages sequentially output emission control signals through emission control lines; and each of the emission stages includes a first signal processor, a second signal processor and a third signal processor, wherein the first signal processor receives a first voltage and outputs first signals and second signals in response to first control signals, second control signals and third control signals, the second signal processor receives the first voltage and outputs third signals in response to the third control signals, the first signals, and the second signals, and the third signal processor receives the first voltage and the second voltage, and outputs emission control signals in response to the third control signals, the second signals, and the third signals. According to the emission control driver and the display device thereof of the present invention, the three signal processors are adopted to receive the first voltage and the second voltage and output the emission control signals in response to the first control signals, the second control signals, and the third control signals, and therefore, the structure of the emission control driver is simplified.

The invention relates to a bipedal clamping type high bearing precise linear driver, and aims to solve the problems of low driving force, weak load bearing capacity, low output precision and the likeof the existing piezoelectric linear driver. The bipedal clamping type high bearing precise linear driver is composed of a sliding upper plate, a sliding upper plate installation bolt, a packaging cover, a packaging cover fixing bolt, a linear driving stator, a guide rail assembly fixing bolt, a base assembly, a linear driving stator fixing bolt and a guide rail assembly. The large output force ofthe driver is realized by the flexible hinge clamping mechanism, high load bearing is realized through the upper arrangement of the guide rail assembly and the lower arrangement of the linear drivingstator, the elastic beam is arranged on the linear rhombus hinge driving connecting beam, the pre-tightening force of the driver is fine-adjusted by adjusting the loading screw of the guide rail andthe extrusion force of the elastic beam, and the stable output of the performance of the driver is ensured by the driving feet. The v has the advantages of simple structure, high resolution, high loadbearing capacity, stable performance, convenient pre-tightening adjustment and the like and has a wide application prospect in the field of micro-nano processing and manufacturing.

The invention provides an intelligent premature ejaculation rehabilitation apparatus and system, wherein the intelligent premature ejaculation rehabilitation apparatus comprises a power supply module,a signal receiving and sending module, a control module, a pulse output module and a plurality of electrode plates, wherein the plurality of electrode plates comprise a plurality of wireless electrode plates and/or a plurality of wired electrode plates; the signal receiving and sending module is used for receiving a pulse type control instruction input by external equipment and sending the pulsetype control instruction to the control module; when the plurality of electrode plates comprise the plurality of wired electrode plates, the control module is used for controlling the pulse output module to output corresponding pulse current into the wired electrode plate according to the pulse type control instruction sent by the signal receiving and sending module; when the plurality of electrode plates comprise the plurality of wireless electrode plates, the control module is used for obtaining a corresponding pulse current digital signal through processing according to the pulse type control instruction, and sending the pulse current digital signal to the wireless electrode plates through the signal receiving and sending module; and each electrode plate is used for being attached to the human body so as to transmit the pulse current to the human body for blocking or interfering the transmission of human neural signals.

The invention discloses a switching tube turn-off compensation method and a related component, and relates to the field of power supplies, the compensation amount of a first preset voltage is obtained, after the compensation amount is obtained, a second preset voltage is obtained according to the compensation amount and the first preset voltage, and a processor performs advanced control based on the second preset voltage. When the acquired voltage of the sampling resistor reaches the second preset voltage, an instruction for controlling the switch tube to be switched off is sent to the switch tube, compensation of time delay existing when the processor controls the switch tube to be switched off is completed through the compensation amount of the voltage, and then advanced control is completed; therefore, the voltage of the sampling resistor is the first preset voltage when the switching tube is actually disconnected, the control accuracy of the switching tube is improved, the output stability of the primary side of the transformer is maintained, and the switching power supply system can provide stable output voltage for load equipment.