92results about How to "Realize drive control" patented technology

The invention provides a time-resolved extreme-low-light multispectral imaging system and method and belongs to the field of extreme-low-light multispectral imaging, wherein the system is triggered through a trigger to ensure the time-resolved property, and the multispectral high-resolution two-dimensional color imaging for extreme-low-light objects is realized by combining a triggering technology of the trigger, the compressive sensing theory, a DLP (digital light processing) technology, a spectrum-dividing technology, an optical fiber coupling technology and a photon counter linear array detection technology; the system is composed of an extreme-low-light light source or self-luminous organisms, the trigger, an optical filter, an optical imaging system, a DMD (digital mirror device) micromirror array, an optical focussing and collecting system, a spectrophotometer, a photo counter lineary array consisting of a plurality of photon counters with different wavelengths, a driving control module and an optimization algorithm module; the sensitivity of the system can reach the level of a photon, and can be widely applied to the fields of self-luminous organism detection, medical treatment imaging, data acquisition, communication, astronomy, military, hyperspectral imaging, measurement in quantum mechanics and the like.

The invention provides a time-resolved single-photon counting two-dimensional imaging system and a time-resolved single-photon counting two-dimensional imaging method and belongs to the technical field of extremely-weak light detection. A trigger 2 is triggered to start sampling, centralized sampling is performed at t time intervals, and measurement and counting are performed if light comes at the intervals, so that time resolving of an extremely-weak light object is realized, and a time sequence image is generated. Imaging is performed on the basis of a compressive sensing (CS) theory, a digital micro-mirror device (DMD5) performs linear random projection on a compressible two-dimensional image, the compressible two-dimensional image is optically modulated and then synchronously detected by using a single-photon counter, and a high-resolution extremely-weak light image can be reconstructed by a small amount of sampling operation. The measurement process is linear and non-adaptive, the reconstruction process is non-linear, and the invention has the advantages of high generality, robustness, expandability, superposition and computation asymmetry, and can be widely applied to the fields of life science, medical imaging, data acquisition, communication, astronomy, military affairs, hyper-spectral imaging and quantum measurement.

The invention pertains to the technical field of medical engineering and discloses a method for driving and controlling a universally rotating magnetic field of a medical micro-robot in a human body. The method is characterized in that three groups of Helmholtz coils on z, y and x axes are arranged by orthogonal nesting so as to ensure that respective combined inductance is equal and the amplitude of intensity of magnetization of a harmonic magnetic field generated respectively is equal when the three groups of coils are driven by the same harmonic current. The relevant amplitude of an axis azimuth angle of the robot and a same frequency sine harmonic driving current of a phase are overlapped to form a spatial universally and evenly revolving magnetic field corresponding to the revolving axis of the azimuth angle in a certain space surrounded by the orthogonal Helmholtz coils on the three axes. The self-rotating direction of the universally rotating magnetic field can be changed by changing the current frequency to adjust the revolution of the magnetic field and changing the orthogonal Helmholtz coils on the three axes to drive the current direction. The method of the invention has the beneficial effects that the method is applicable to a bending inner environment of the human body and can realize a plurality of functions of rotation, going forward and backward and speed adjusting, etc., of the robot in the human body, and the positioning operation in the human body.

The invention provides a driving control circuit used for a laser tracker precision servo system. The driving control circuit comprises a data collection board used for collecting data of a permanent magnetic synchronous motor, a main control board connected with an upper computer and the data collection board and used for acquiring a target state command and reference input signals from the upper computer, acquiring data of the permanent magnetic synchronous motor from the data collection board and processing the target state command, the reference input signals and the data of the permanent magnetic synchronous motor to generate a control signal and a power driving board connected with the main control board and used for conducting power amplifying on the control signal output by the main control board and outputting a control voltage signal to drive the permanent magnetic synchronous motor to work. The circuit is formed by combining three circuit boards of the main control board, the data collection board and the power driving board in terms of hardware, configuration can be conducted according to the specific application requirements, and the flexibility is higher.

The invention relates to an H-bridge driving control circuit of a motor, which comprises an H-bridge driving circuit, a driving control unit, an anti-interference unit and a protection unit, wherein in the H-bridge driving unit, two diagonal branch circuits are formed by four switching tubes; the driving control unit is used for converting an input control signal into a suitable voltage for controlling to switch on the corresponding switching tube; the anti-interference unit is used for preventing the upper arm switching tube of the other branch circuit from being switched on when one branch circuit is in the switch-on state; and the protection unit is used for preventing the lower arm switching tube of the other branch circuit from being switched on when one branch circuit is in the switch-on state. The H-bridge driving control circuit of the invention prevents the P switching tube which cannot be switched on from being switched on due to starting of the motor or burr generated by transient large current, improves the anti-interference capacity of the circuit, and can rapidly switch off the corresponding N-channel switching tube when the circuit control signal is disordered or goes wrong, so that the circuit has through protection function. The whole driving control circuit is driven by a single power supply, is easy to implement and has a simple structure, and the reliable work of the circuit is further guaranteed.

The invention relates to a 60-degree coordinate system-based three-phase VIENNA rectifier and a control method, and specifically relates to a three-level VIENNA rectifier and a control method thereof. The invention aims to solve the problems of low power grid power factor, high grid side harmonic component and poor system stability in the prior art. The 60-degree coordinate system-based three-phase VIENNA rectifier includes an inductor group, a main circuit, a DSP control system, a drive module, a grid side voltage signal processing circuit, a grid side current signal processing circuit, a direct voltage sampling module and a load, the inductor group includes a first inductor, a second inductor and a third inductor, the main circuit includes a three-phase VIENNA rectifier circuit, a power grid is connected with an input end of the three-phase VIENNA rectifier circuit through the first inductor, the second inductor and the third inductor, and an output end of the three-phase VIENNA rectifier circuit is connected with the load. The device and the method provided by the invention improve the power factor of the power grid, improve system response speed, and enhance system stability.

The invention provides an air conditioning system for a hybrid power vehicle. The air conditioning system for the hybrid power vehicle comprises a motor compressor, a condenser, a receiver-drier, an expansion device, an evaporator, a heater, a blower, an air conditioning control module, an in-vehicle temperature sensor and an air conditioning switch, wherein the air conditioning control module is connected with a field bus, and used for controlling working states of the motor compressor and the heater; the in-vehicle temperature sensor is connected with the air conditioning control module and used for measuring in-vehicle temperature and supplying the measured temperature to the air conditioning control module; the air conditioning switch comprises a refrigeration switch and a heating switch, both the refrigeration switch and the heating switch are electrically connected with the air conditioning control module and respectively used for sending refrigeration and heating request signals after being triggered, and then the air conditioning module at least combines in-vehicle temperature to determine the working state of the motor compressor and the heater. The air conditioning system for the hybrid power vehicle has the advantages that a constant temperature function which is not possessed by a traditional vehicle manual air conditioning system is achieved, frequency conversion performance is possessed, energy is saved, and fuel saving ratio is improved.

The invention discloses a device and a method for driving and controlling a stepper motor. The device comprises an upper control machine, a processing module and an interface module, wherein the upper control machine is used for generating a motor control command and setting configuration data; the processing module is used for receiving the motor control command and the configuration data and outputting a stepper motor pulse signal according to the configuration data when the motor control command indicates to drive the motor; and the interface module is used for outputting a drive signal to the stepper motor according to the stepper motor pulse signal. In the invention, requirements on the upper control machine are low, so that cost and realization complication can be reduced.

The invention relates to an LC (inductance/capacitance) resonance drive circuit for ultrasonic motor and a control method of the LC resonance drive circuit. According to the capacitance load characteristic of the ultrasonic motor, inductors are serially connected and matched to form a transformer-free drive circuit with an ultrasonic motor body and LC resonance boosting. Furthermore, the invention provides a method for fixing all circuit parameters and changing a drive signal frequency, a duty ratio and a resonance cycle only, and thus the drive control of the ultrasonic motor is realized. By adopting the USR30 ultrasonic motor, experimental verification is carried out.

The invention discloses an integrated underwater thruster driving system and a control method, which realizes the integrated underwater thruster sensorless control. A linear back EMF sliding mode observer based on fuzzy switching gain adjustment is provided, The observer adopts a smooth hyperbolic tangent function and fuzzy rules to realize change of a gain value and reduce the chattering of the system, so that the control system can obtain smooth back EMF estimates without adding a low pass filter and a phase compensation module, thus avoiding the phase lag of the back EMF estimates. The lineback EMF estimates are corresponded to three virtual Hall signals and six discrete commutation signals are obtained directly without the need of fixed phase shift circuit and calculation of phase shift angle. the invention realizes the integrated underwater thruster sensorless control by estimating the line back EMF of the brushless DC motor loaded in the underwater thruster,.

The embodiment of the invention provides a self-service terminal control system based on a browser. The system is applied to self-service terminal equipment of a financial system, and includes a browser layer, a management interlayer and a hardware driving layer. The browser layer is used for accessing a Web address of a server, obtaining and displaying a self-service operation interface, and forwarding a hardware operation request generated according to a function instruction input by a user through a preset interface; the management interlayer is used for receiving the hardware operation request forwarded by the browser layer, and sending a hardware calling command according to the hardware operation request to the hardware driving layer by adopting a mode of calling a preset dynamic link library; the hardware driving layer is used for driving a corresponding hardware driving program to work according to the hardware calling command, and returning generated feedback information to the browser layer through the management interlayer. The management interlayer achieves drive control over the hardware driving layer by calling the dynamic link library instead of calling physical hardware through an ActiveX control, and therefore corresponding potential safety hazards are avoided.

The invention discloses a display module and a display device. The display module comprises a display panel and a backlight module, wherein the backlight module is arranged opposite to the display panel and comprises a backlight light bar, a main flexible circuit board and a COF flexible circuit board, the COF flexible circuit board is connected with the display panel and the main flexible circuit board separately, and the COF flexible circuit board can be bent to make the main flexible circuit board arranged at the side, away from the display panel, of the backlight module; the backlight light bar is connected with the main flexible circuit board through the COF flexible circuit board. According to the display module and the display device, the backlight light bar is connected with the main flexible circuit board through the COF flexible circuit board to achieve driving control of the main flexible circuit board over the backlight light bar, the length of leads drawn forth the backlight light bar can be obviously shortened when the backlight light bar builds circuit connection, the backlight light bar is directly connected with the COF flexible circuit board near to the backlight light bar, when connection is conducted, the problem that the locating precision is hard to guarantee does not exist, and the product yield is increased.

The invention discloses a titanium nitride-based novel nano-structure photocathode, and the titanium nitride photocathode includes a substrate and a titanium nitride nano-structure layer. The invention also relates to a method for preparing the titanium nitride photocathode and an electric field assisting type photocathode test device, and the electric field assisting type photocathode includes an insulating spacer, a metal sheet anode, an upper/lower electrode lead and an external bias power supply. The core titanium nitride nano-structure in the design has a surface Plasmon resonance effect, brings photon absorption enhancement and local electric field enhancement, a material work function is only about 3.7eV and electrical conductivity is excellent, thereby contributing to emission of photoinduced electrons; and through design of constituting nano patterns and structure parameters of the titanium nitride structure, plasmon resonance matched with incident excitation light waves can be obtained, thereby realizing electron emission capable of being controlled by light. Since the titanium nitride material also has stable physico-chemical properties, the photocathode provided by the invention is stable and efficient.

The invention discloses a bidirectional switch floating drive circuit and a multi-way switch drive circuit thereof. The bidirectional switch floating drive circuit comprises a primary side drive generation circuit, a primary side drive amplification circuit, an isolation drive transformer T1, a secondary side half-wave rectification circuit and a floating drive circuit. The primary side drive generation circuit comprises an AND gate and two paths of input signals, wherein one path is a PWM wave, and the other path is an I/O signal; the isolation drive transformer T1 comprises a primary windingN1 and a secondary winding N2; the secondary side half-wave rectification circuit comprises a rectifier diode D1 and a secondary side filter capacitor C2; and the floating drive circuit comprises a bidirectional switch tube G, wherein the bidirectional switch tube G comprises two N-type MOS transistors, grid electrodes and source electrodes of the two MOS transistors are respectively connected together. According to the invention, long-time conduction or closing of the bidirectional switching tube can be conveniently realized only by controlling the level state of the I/O signal.

The invention belongs to a motor control circuit, and particularly discloses a multi-path permanent magnet synchronous motor control circuit based on an FPGA chip. The multi-path permanent magnet synchronous motor control circuit comprises an FPGA module, wherein the phase current signal input end of the FPGA module is communicated with the signal output end of a motor phase current acquisition module; the rotor position signal input end of the FPGA module is communicated with the signal output end of a motor rotor position acquisition module; the rotor position signal acquisition end of the motor rotor position acquisition module is communicated with the rotor position signal output end of a permanent magnet synchronous motor unit; the signal input end of the motor phase current acquisition module is communicated with the phase current signal output end of the permanent magnet synchronous motor unit; the signal input end of a motor power driving module is communicated with the SVPWM control signal output end of the FPGA module; the signal output end of the motor power driving module is communicated with current signal input end of the permanent magnet synchronous motor unit. The multi-path permanent magnet synchronous motor control circuit can realize driving control and cooperative control functions of a multi-path permanent magnet synchronous motor.

The invention discloses an LED control device with a broadband communication interface based on broadband power line carrier. The LED control device comprises a master LED control device and at leastone slave LED control device. The master LED control device comprises an LED lamp driving controller and a first broadband power line carrier communication device. The slave LED control device comprises an LED lamp driving controller and a second broadband power line carrier communication device; and the master LED control device performs broadband power line carrier communication with the slave LED control device through a power line. According to the invention, the LED lamp can be controlled and managed without additionally laying a communication line, and the LED lamp is also provided witha broadband Ethernet communication interface and a 485 communication interface, so that the communication deployment cost is saved.

The invention discloses a selfie stick based on a rotation auto-control mechanism. The selfie stick comprises a fixed rack, a could table and a stick body, wherein the rotation auto-control mechanism is arranged on the stick body and comprises a power supply circuit, a key circuit, a control circuit, a motor driving circuit and a rotation motor, the power supply circuit is used for supplying power, the key circuit is connected with the input end of the control circuit, a rotor of the rotation motor is fixedly connected with the bottom of the cloud table by a fixing element, the key circuit is used for generating a click signal, the control circuit is used for generating a control signal according to the click signal of the key circuit, the motor driving circuit is used for converting the control signal generated according to the control circuit to the driving signal, and the rotation motor is used for enabling the rotor to rotate according to the driving signal of the motor driving circuit so as to drive the could table to rotate. By the selfie stick, self shooting can be achieved, the angle of the could table also can be adjusted according to demands, and the shooting picture of a mobile phone is effectively ensured.

The invention discloses a memory motor magnetic adjustment control method and system based on zero-sequence magnetic adjustment, and the method comprises the steps: (1) enabling a winding on a memorymotor stator to employ an integrated winding which integrates the functions of an armature winding and a magnetism adjusting winding, and enabling a first inverter and a second inverter, which are connected in parallel, to be connected with the integrated winding; (2) when a memory motor normally operates without magnetic adjustment, generating a switching signal in a space vector modulation modeaccording to the detected rotor electrical angle theta e, the three-phase current Iabc and the rotor rotating speed omega r of the memory motor, and driving two inverters to perform vector control onthe integrated winding of the memory motor; and (3) when the memory motor needs to be subjected to magnetic adjustment, determining the magnitude of the output zero-sequence current according to a magnetization state selector in the voltage modulation process by utilizing SVPWM, and changing the action time of the zero vector to generate the required magnetic adjustment current, thereby realizingthe magnetic adjustment of the permanent magnet of the memory motor. The method is low in redundancy, and the torque density of the motor is improved.

The invention relates to a modeling and control method for a slender soft robot constrained by an elastic plane, which comprises the following steps of: simplifying the cross section of the slender soft robot into a circular section, simplifying the whole structure of the slender soft robot into a Kirchhoff elastic slender rod, and carrying out nonlinear static analysis on the simplified slender soft robot model; performing airspace discretization on the model by adopting a finite difference method, and adding a geometric space boundary condition constraint, a fixed length condition constraint and an elastic plane constraint; based on a nonlinear least square algorithm combining a trust region method and an Armijio search strategy, an optimization algorithm of an adaptive search elastic constraint condition being provided, a mathematical model being solved, and geometric space coordinates and mechanical information of all discrete points of the slender soft robot being obtained. The correctness and rationality of the method are verified according to the solving result, and important support is provided for the modeling theory of the slender soft robot.

In the DC voltage conversion circuit of the feedback type structure, the switching frequency is increased in frequency and the electrical efficiency is improved at the same time. Control is carried out so that the switching element (11) provided in the primary side of the transformer (10) constituting the direct current voltage conversion circuit (15) becomes a conduction period, the transformer (10) stores energy, and the energy is stored during the off period of the switching element. The energy is output from the secondary winding (10s), and at the same time when the output of the energy from the secondary winding (10s) is completed, the switching element (11) is brought into a conduction state. Therefore, the time from when the secondary side current Is of the transformer (10) becomes zero to when the primary side Ip of the transformer starts to flow is detected, and the switching frequency is changed by the control unit (16), so that the time is shortened.

An integrated multifunctional power division switch network assembly based on a vertical interconnection technology comprises radio frequency cavities and a digital signal processing circuit board. Signal transmission between the radio frequency cavities is vertically interconnected through copper silver-plated round wires. The digital signal processing circuit board is vertically connected with the radio frequency printed board through an insulating medium and a copper silver-plated round wire, so that the driving control of a chip is realized, the switching function of multiple paths of signals is completed, a radio frequency signal is input from the side surface of the radio frequency cavity and output from the top surface of the cavity, and the signal output realizes the external floating output of the radio frequency signal through a floating KK head. The radio frequency front printed board and the radio frequency back printed board jointly complete signal power distribution, multi-channel switch switching and straight-through transmission. The digital signal processing board adopts a floating low-frequency connector to complete the same horizontal plane with radio-frequency signal output, and can be in blind-mating interconnection with a rear-end TR assembly to complete direct signal distribution and transmission of the TR assembly and an antenna.

The invention discloses an indicator light control circuit and electric equipment. The indicator light control circuit comprises a signal source selection module, a control module and a driving modulewhich are connected in sequence, wherein the signal source selection module is used for outputting a control signal to the control module according to a first signal source or a second signal source,the control module is used for outputting a positive driving signal or a negative driving signal to the driving module according to the control signal, and the driving module is used for driving thepositive indicator light to be turned on according to the positive driving signal or driving the negative indicator light to be turned on according to the negative driving signal, so that the drivingcontrol of the indicator lights with different polarities can be realized, two signal sources can be supported, and the compatibility of the indicator light control circuit is improved.

The invention relates to a photoelectric-isolated high-power brushless direct-current motor drive device and a drive feedback processing method. Six paths of drive signals UP-IN, UN-IN, VP-IN, VN-IN, WP-IN and WN-IN, which are output by a high-power brushless direct-current motor drive control system digital signal processor (DSP) and a complex programmable logic device (CPLD) controller through phase-change control, generate six paths of insulated gate bipolar translator (IGBT) drive signals UP, UN, VP, VN, WP and WN; the six paths of drive signals pass through an optical fiber transmission circuit, and achieve conversion of the IGBT drive signals from electric signals into optical signals; IGBT drive feedback signals FK-UP-IN, FK-UN-IN, FK-VP-IN, FK-VN-IN, FK-WP-IN and FK-WN-IN pass through an optical fiber receiving circuit and achieve conversion from the optical signals into the electric signals; the IGBT drive feedback signals are input into the CPLD; and whether the IGBT drive circuit normally works or not is judged by the drive feedback processing method. According to the photoelectric-isolated high-power brushless direct-current motor drive device and the drive feedback processing method, drive control of a high-power brushless direct-current motor is achieved; the problems of electromagnetic interference and electromagnetic compatibility of the traditional brushless direct-current motor drive control system are greatly improved; and the working stability and efficiency of the system are improved.