30results about How to "Realize time-sharing control" patented technology

The invention provides a DKDP crystal plasma pole Pockels cell driven by a single pulse. A non-inductive capacitor is arranged in a DKDP crystal plasma pole Pockels cell driven by a single pulse, and the Pockels effect of a DKDP crystal driven by the single high-voltage switch pulse is realized. The DKDP crystal plasma pole Pockels cell driven by the single pulse has small discharging current, large diameter, low light absorption coefficient and stable puncture and can be used for the Q switch and stage isolation of a laser with large diameter and high average power.

The invention belongs to the field of lower limb assisting exoskeletons, and discloses a hip joint passive exoskeleton device based on energy time-sharing regulation. The hip joint passive exoskeletondevice comprises a waist arc-shaped support assembly, hip joint assemblies, thigh assemblies and elastic component connecting assemblies, wherein the waist arc-shaped support assembly comprises surrounding support devices and flexible bandages; each hip joint assembly comprises a hip joint inwards folding and outward unfolding connector and a hip joint bending and stretching connector; each thighassembly comprises a thigh outer-side connecting rod, a thigh front hoop and a thigh rear hoop; each elastic component connecting assembly comprises an L-shaped cantilever, an force arm, a digging rope clutch, an extension spring and a flexible rope. For the hip joint passive exoskeleton device based on energy time-sharing regulation provided by the invention, through the digging rope clutches triggered along with the joint angle, the extension springs stretch for storing the mechanical energy of the human body when the human hip joint does negative work and contract for releasing the energywhen the human hip joint does positive work, so that the time-sharing regulation on the mechanical energy of the human body is realized finally, the movement of the hip joint is assisted, the metabolic energy consumption generated during walk is reduced, in addition, the hip joint passive exoskeleton device has the advantages that the structure is simple, the cost is low, the weight is small, andthe wearing is comfortable.

An atomization device and its output control method, wherein the atomization device includes a power supply module, a heating module and a controllable switch. The output control method based on the atomization device includes: when it is detected that the device enters the working mode, it reads the time interval between the start of work and the last stop of the device; when it is detected that the time interval is greater than or equal to the first predetermined time , control the input power of the heating module at the first power, reset the timer and restart timing, and control the input power of the heating module at the second power when it is detected that the timer reaches the second predetermined time, the second power less than the first power; when it is detected that the time interval is less than the first predetermined time, the input power of the heating module is controlled at the second power, and the timer is reset and timing is restarted. This method can solve the problem of poor mouthfeel of the atomization device and improve user experience.

The invention discloses a design method for switching use of a multipath PS / 2 keyboard and a mouse device, and relates to the field of management of computer input devices. According to the method, a PS / 2 interface switch module is connected among the multipath PS / 2 interface keyboard, a mouse and a computer PS / 2 interface in series; the PS / 2 interface switch module comprises an MCU serving as a core and a driving function circuit of PS / 2 signals, wherein the devices of the driving function circuit of the PS / 2 signals include a PS / 2 driving circuit and a PS / 2 driving circuit of a host computer; after the PS / 2 interface switch module is powered on, the PS / 2 interface switch module completes the initialization procedure of the PS / 2 interface of a computer end during the startup of the host computer, the initialization is automatically completed by plugging the PS / 2 keyboard and mouse, and PS / 2 data communication among the keyboard, the mouse device and the host computer in a current channel is conducted according to a switch status.

The invention discloses a dual-three-phase motor five-phase inverter and a control method thereof. The speed error is obtained after adjusting the actual speed and the given speed of the two motors; and then the speed error of the two three-phase motors is passed through the The controller obtains the given current of the two three-phase motors, passes the obtained given current through the reference current generator to obtain the reference current of the two three-phase motors, passes the reference current and the actual current through the current regulation module to obtain the current error, and The current errors in the phase windings connected to each independent bridge arm are respectively sent to the hysteresis controller. The signal generated by the hysteresis controller passes through the PWM generation unit, and the PWM generation unit is used to realize the control of two three-phase motors. The synchronous drive of two motors at the same speed can also realize the synchronous drive of two motors at different speeds. The invention is applicable to many different types of three-phase AC motors. It has the advantages of simple algorithm, fast response and high precision, and is simple to implement. Wide range of applications.

The invention discloses a camera with multi-channel flash synchronization signals, which includes a connected camera body and a camera interface, wherein the camera interface includes a synchronization signal generation module, an input module and a power supply module, and the power supply module is a synchronization signal generation module, The input module provides power, and the synchronous signal generation module receives the pulsed flash synchronous signal of the image sensor chip, generates multiple synchronous signals with different effective sequences according to the input information received by the input module, and controls the opening and closing of multiple external flashes; the user The execution sequence of multiple flashes can be customized according to the actual situation. The functions are integrated inside the camera and do not take up extra space when applied.

The invention discloses a dual-three-phase motor four-bridge arm inverter and a control method thereof. The method comprises the following steps: the actual speeds of two three-phase motors are acquired, and the actual speeds and the given speeds of the two motors are sent to a speed adjustment module to obtain the speed errors of the two motors; the speed errors of the two three-phase motors aresent to a PI controller to obtain the given currents of the two three-phase motors; the obtained given currents are sent to a reference current generator to obtain the reference currents of the two three-phase motors; the reference currents and the actual currents are sent to a current adjustment module to obtain the current errors; the current error in the phase winding connected with each independent bridge arm is sent to a hysteresis controller; and the signal generated by the hysteresis controller passes through a PWM generation unit, and the two three-phase motors are controlled by the PWM generation unit. The dual-three-phase motor four-bridge arm inverter and the control method thereof are applicable to a variety of different types of three-phase AC motors, have the advantages of simple algorithm, fast response and high precision, are simple to implement, and have a wide range of application.

The invention discloses a time-sharing phase sequence change emergency control method and system based on an energy function. The method comprises the following steps: determining total energy of thesystem according to power angle and rotation speed of each power generator in the system under a preset time; if the total energy is less than or equal to critical energy, ending the control, or otherwise, determining a motion trajectory of each power generator; according to the motion trajectory of each power generator, judging that the power generator which reaches the 180-degree power angle first is a power generator having the most serious out-of-step fault; calculating and comparing system energy change values of the power generator having the most serious out-of-step fault from a presetmoment to different moments when the power angle reaches 180 degrees, and judging that the moment corresponding to the maximum energy change value is the phase sequence change moment of the power generator and carrying out phase sequence change operation on the power generator having the most serious out-of-step fault; and updating the preset moment to the phase sequence change moment of the powergenerator and re-calculating the system total energy. The method and system have the advantages of maintaining system integrity while restoring system stability and improving energy efficiency and safety of the power system.

The invention discloses a control system of a circular knitting machine. The control system comprises an embedded system control panel, a parallel bus driving board and an electromagnetic needle selector unit. The embedded system control panel comprises an ARM [advanced RISC (reduced instruction set computer) machine] processor and a field-programmable gate array which are connected with each other by a parallel bus; the parallel bus driving board comprises a field-programmable gate array, and the field-programmable gate array of the embedded system control panel is connected with the field-programmable gate array of the parallel bus driving board by a parallel bus; the field-programmable gate array of the parallel bus driving board is connected with the electromagnetic needle selector unit by a parallel bus. The control system has the advantages that an ARM and FPGA (field-programmable gate array) dual-core processing effect can be realized, the control system can be operated via a touch screen, an eight-bit address and data time-sharing multiplex bus driving mode is adopted for controlling an actuating mechanism, accordingly, the real-time processing and control abilities of the system can be improved, and time-sequence requirements of high-speed control for different grades of circular knitting machines can be met.

The invention discloses an interactive electronic whiteboard for remote control transmission and reception of a specified number, which includes a remote control and an electronic whiteboard body; the remote control includes several keys and a remote control code sending unit; the electronic whiteboard body includes a remote control code receiving unit The button is connected with the remote control code sending unit to set and send the first client code; the remote control code sending unit is connected with the remote control code receiving unit to send the remote control signal including the first client code; The remote control code receiving unit judges whether the second client code set on the electronic whiteboard is paired with the first client code, and if paired, accepts the control of the remote controller; if not, does not accept the control of the remote controller. In the present invention, by setting the configured customer codes on the remote controller and the electronic whiteboard, in the scenario where multiple interactive electronic whiteboards of the same model are placed, one of the electronic whiteboards can be independently controlled without affecting other electronic whiteboards.

The invention relates to a time-shared stabilized control method of a hall electric propulsion discharging current. On the basis of a time-shared control strategy, a relatively stable anode throttler temperature is used as a closed-loop feedback parameter at an initial ignition stage, so that failed ignition caused by using a high-oscillation discharging current as a feedback parameter directly can be avoided. After successful ignition, the discharging current oscillation amplitude is reduced; and then the discharging current is used as the closed-loop feedback parameter directly, thereby realizing stable control of the discharging current of the hall electric propulsion system, suppressing the low-frequency oscillator of the discharging current, and improving the efficiency. According to the time-shared control strategy, ignition reliability of the hall electric propulsion system at the initial ignition stage is guaranteed and the working performance of the hall electric propulsion system during the operating process is also improved.

The invention discloses a time-sharing phase sequence change emergency control method and system based on an energy function. The method comprises the following steps: determining total energy of thesystem according to power angle and rotation speed of each power generator in the system under a preset time; if the total energy is less than or equal to critical energy, ending the control, or otherwise, determining a motion trajectory of each power generator; according to the motion trajectory of each power generator, judging that the power generator which reaches the 180-degree power angle first is a power generator having the most serious out-of-step fault; calculating and comparing system energy change values of the power generator having the most serious out-of-step fault from a presetmoment to different moments when the power angle reaches 180 degrees, and judging that the moment corresponding to the maximum energy change value is the phase sequence change moment of the power generator and carrying out phase sequence change operation on the power generator having the most serious out-of-step fault; and updating the preset moment to the phase sequence change moment of the powergenerator and re-calculating the system total energy. The method and system have the advantages of maintaining system integrity while restoring system stability and improving energy efficiency and safety of the power system.

The invention provides a DKDP crystal plasma pole Pockels cell driven by a single pulse. A non-inductive capacitor is arranged in a DKDP crystal plasma pole Pockels cell driven by a single pulse, and the Pockels effect of a DKDP crystal driven by the single high-voltage switch pulse is realized. The DKDP crystal plasma pole Pockels cell driven by the single pulse has small discharging current, large diameter, low light absorption coefficient and stable puncture and can be used for the Q switch and stage isolation of a laser with large diameter and high average power.

The invention relates to a combined microwave and electric heating coffee roasting device, which belongs to the field of agricultural product processing. The invention includes a microwave device, a monitoring device, a transmission device, an electric heating device, and a control device; the microwave device is used to generate microwaves for microwave heating of materials; the monitoring device includes a temperature and humidity sensor, an infrared temperature measuring sensor, and a temperature sensor; For monitoring the temperature and humidity of the exhaust air, the infrared temperature sensor is used to monitor the temperature of the material surface, and the temperature sensor is used to monitor the temperature of the electric heating tube; the control device is used to monitor the temperature and humidity information of the exhaust air and the temperature of the material surface. The temperature information and the temperature of the electric heating tube are used to control the microwave device, the transmission device and the electric heating device. The present invention proposes to roast green coffee beans by microwave heating, which does not require a preheating process, improves the quality of roasted coffee, shortens roasting time, improves roasting efficiency, reduces production costs, and is energy-saving and environmentally friendly.