23results about How to "Fast adjustment response" patented technology

An air volume and internal volume ratio adjusting mechanism of a double-screw compressor comprises a power source, a transmission mechanism and a slide valve. The power source is in transmission connection with the sliding valve through a transmission mechanism so as to drive the sliding valve to move and change the air volume and the internal volume ratio of the double-screw compressor, and the double-screw compressor is characterized in that the power source is a turning motor of the double-screw compressor, and the transmission mechanism comprises a first disc buckle, a second disc buckle and a threaded shaft; the threaded shaft is rotationally arranged on a machine shell of the double-screw compressor, and the first disc buckle is installed at one end of the threaded shaft and can drive the threaded shaft to rotate bidirectionally and synchronously. The slide valve is sleeved outside the threaded shaft; an internal thread of the slide valve is spirally connected with an external thread of the threaded shaft; a shell of the turning motor is detachably connected with a machine shell of the double-screw compressor, a power output shaft of the turning motor is in key connection with the second disc buckle, and the second disc buckle is detachably connected with the first disc buckle and can drive the first disc buckle to rotate bidirectionally and synchronously. The device is simple in structure, low in implementation cost and accurate in adjustment.

The invention provides a motion overshoot suppression control method for a pintle type fast-response gas valve, which adopts a three-ring nested control mode of valve core position-motor rotating speed-motor phase current, improves the response speed and the anti-interference capability in the acceleration and deceleration process of a motor by controlling the phase current, improves the speed regulation performance by a speed ring, and improves the stability of the motor. Finally, accurate following of the target position of the valve element is achieved through the position control ring, and zero-static-error control can be achieved. According to the motion overshoot suppression control method for the pintle type fast-response gas valve, motion overshoot of the valve element is effectively suppressed, disturbance of pneumatic load changes is resisted, and it is verified that the control overshoot amount is smaller than 2% when the valve element is loaded.

The invention discloses a driving circuit of a power converter, the power converter and power supply equipment, and belongs to the technical field of power electronics. The drive circuit comprises a drive signal transmission unit, a push-pull circuit, a drive impedance network and a drive rate adjusting unit, the drive rate adjusting unit comprises a first switch, and the first switch is used for connecting the drive rate adjusting unit to the push-pull circuit or disconnecting the drive rate adjusting unit from the push-pull circuit. The driving rate adjusting unit comprises at least one of an acceleration unit and a speed limiting unit, the acceleration unit is used for increasing the current of the push-pull circuit, and the speed limiting unit is used for reducing the current of the push-pull circuit; wherein the driving rate adjusting unit is used for adjusting the current of the push-pull circuit and changing the current input to the driving impedance network so as to adjust the driving rate of the driving circuit for driving the power conversion circuit. The drive circuit changes the current of the push-pull circuit and adjusts the drive rate by arranging the drive rate adjusting unit, and is high in response speed, high in loading capacity and high in operation stability.

The invention relates to the technical field of aerosol particle size control, in particular to a multi-mode self-suction type superfine aerosol emitting device and a control method thereof. Through reasonable arrangement of the composite atomization module, the liquid supply module, the taper angle adjusting module, the particle size detection module and the central control module, full-coverage adaptation from low-viscosity liquid to high-viscosity liquid can be achieved, and the problem that in the prior art, the high-viscosity liquid atomization adaptability is poor is solved; the atomization requirements of different scenes can be met through precise adjustment of the spraying cone angle, the spraying pressure, the spraying speed and the spraying particle size; through the synergistic effect of a composite atomization mechanism and the Laval nozzle and in combination with particle size detection feedback adjustment, the spray particle size of high-viscosity liquid such as diesel oil can be accurately controlled to be a minimum value so as to meet the core requirement of aerosol preparation, and the device is low in manufacturing cost, stable in operation and high in practicability. The problems of blockage, substandard particle size, easiness in ignition and the like in the atomization process of high-viscosity liquid can be effectively solved.

The invention relates to the field of graphitization furnaces, in particular to a graphitization furnace state monitoring system which comprises a furnace body, and an exhaust pipe is provided with a pressure detection assembly used for detecting the pressure in the furnace body and a temperature detection assembly used for detecting the temperature in the furnace body. The gas inlet pipe and the gas outlet pipe are provided with adjusting mechanisms used for adjusting the flow of inert gas and the flow of high-temperature waste gas. The device has the beneficial effects that in actual use, the pressure and temperature in the furnace body are detected through the pressure detection assembly and the temperature detection assembly, and when the pressure is higher than a threshold value or the temperature is higher than the threshold value, the adjusting mechanism adjusts the inert gas flow to be reduced and the high-temperature waste gas flow to be increased; therefore, the purposes of pressure reduction and temperature reduction are achieved. When the pressure is lower than the threshold value or the temperature is lower than the threshold value, the adjusting mechanism adjusts the inert gas flow to be increased and the high-temperature waste gas flow to be reduced, and therefore the purposes of pressure rising and temperature rising are achieved.

The invention relates to the technical field of water and electricity, and discloses a water-turbine generator set guide vane position adjusting method which comprises the steps that in a speed regulator power mode, a speed regulator receives a power constant value and collects the current unit volute pressure, the current guide vane position is calculated according to the water turbine operation characteristic, and then coarse adjustment is conducted according to an opening degree mode; and when the given power and the power feedback reach target values of a set percentage, starting power PI adjustment, and performing fine adjustment according to a power mode. The problems of slow adjustment response, low adjustment precision and the like in the prior art are solved.

The utility model discloses an online adjustable flow head single suction energy -conserving pump, including pump body and pump cover, be provided with the axle in the pump body, adjustable outer diameter impeller is installed to the front end of axle and passes through the pump cover, adjustable outer diameter impeller includes a plurality of blades, and the front end of blade is connected with telescopic blade through pneumatic cylinder and spring, the blade is opened with the impeller air channel, and the impeller air channel is linked with pneumatic cylinder, the pump cover is fixed with the sealed chamber, and the sealed chamber is provided with the gas path connector, and the gas path connector is used for connecting with the air compressor of outside, the axle is opened with the air channel, and the air channel one end gas path connector connects, and the other end of air channel is linked with the impeller air channel, the utility model discloses the spring resilience cooperation of pneumatic drive and adjustment impeller outlet blade outer diameter, realize the online dynamic adjustment of flow and head, make water pump always run in the best working condition to reduce energy consumption significantly.

The invention, which relates to the technical field of evaporation boat temperature control, discloses an evaporation boat control system comprising an evaporation boat temperature real-time monitoring device, a control system, an evaporation boat temperature adjusting system and an operation interface. The evaporation boat temperature real-time monitoring device is used for monitoring the temperature of the evaporation boat in real time; the control system is used for calculating and analyzing the temperature collected by the evaporation boat temperature real-time monitoring device and issuing a temperature adjusting instruction to the evaporation boat temperature adjusting system according to the analysis condition. The evaporation boat temperature adjusting system is used for adjusting the current and the voltage according to the received instruction; and the operation interface is used for performing intervention on system errors by a worker. According to the invention, the situations that the human body is harmed when the evaporation state is observed by naked eyes and the aluminum liquid in the evaporation boat is easy to splash due to too fast temperature change in the prior art can be effectively improved.

The utility model relates to the technical field of heat sealing machines, in particular to an anti-sparking high-frequency machine. The technical problem is that when dust or water is attached to plastic cloth or a mold, a high-frequency machine generates a sparking phenomenon, so that a plastic plate or the mold is damaged. According to the technical scheme, the anti-sparking high-frequency machine comprises a high-frequency machine body, an electric telescopic rod, an upper die and a lower die. The upper part of the high-frequency machine is fixedly connected with at least two electric telescopic rods; telescopic parts of all the electric telescopic rods are jointly and fixedly connected with an upper mold; the middle of the high-frequency machine is fixedly connected with a lower die. The electric telescopic rod is connected with an external power supply. Air enters the cavity and then is sprayed out from the first air spraying holes, the sprayed air blows away dust attached to the upper mold and the lower mold, so that the sparking phenomenon caused by the dust attached to the upper mold and the lower mold is avoided, the sponge can suck away water possibly attached to the plastic cloth, the sponge scrapes away the dust on the plastic plate, and the plastic plate is prevented from falling off. And therefore, the plastic plate is cleaned.

The application discloses a laser ranging four-roller micro-foaming calender and a calendering method thereof, and belongs to the technical field of plastic foamed plate processing equipment. The calender comprises a four-roller calendering unit, a laser ranging unit, a servo adjusting unit and a control system. The plate thickness is detected in a non-contact real-time mode by a laser triangulation ranging sensor, and the servo motor is linked with the PLC control system to realize closed-loop dynamic adjustment of the roll gap. The calendering method adopts multi-channel symmetrical calendering of the upper roller group and the lower roller group and gradient temperature control, so that the plate sequentially completes surface skinning, internal foaming and thickness setting calendering, and the thickness uniformity and the surface quality are effectively improved.

The invention relates to a knee joint rehabilitation training device, which belongs to the technical field of rehabilitation training, and comprises a bearing assembly, a connecting assembly, a connecting arm I, a connecting arm II, a shank assembly, a driving assembly, a damping assembly and an adjusting assembly, the connecting assembly is arranged below the bearing assembly; the first connecting arm is arranged on the connecting assembly in a sliding mode. The second connecting arm is rotationally arranged on the connecting assembly. The shank assembly is rotationally arranged on the first connecting arm and the second connecting arm. The driving assembly is arranged on the connecting assembly, and the output end of the driving assembly is connected with the first connecting arm. The damping assembly is arranged on the connecting assembly and is connected with the driving assembly; the adjusting assembly is arranged on the damping assembly. Impedance training and auxiliary training can be carried out.

The invention relates to the field of vehicle parts, in particular to a gas supply system and an air spring system with the gas supply system.The gas supply system comprises a gas supply unit, a drying unit, a pipeline unit and a gas storage unit; the gas supply unit is connected with the drying unit through the pipeline unit; the gas supply unit comprises a valve block; an air pressure control unit is arranged in the valve block; the air pressure control unit comprises an air supply unit, an air spring control unit and a connection control unit; the air pressure control unit is connected with an air storage unit; the gas storage unit comprises a first gas storage unit or / and a second gas storage unit; according to the gas supply system disclosed by the invention, the drying unit is independent of the gas supply unit, so that the subsequent replacement of the drying unit can be facilitated; the gas storage unit comprises a first gas storage unit and a second gas storage unit; therefore, the invention can be compatible with the connection and use modes of a single gas storage unit and a double gas storage unit.

The invention relates to the technical field of SVG equipment, and discloses an SVG wind-liquid mixed heat dissipation system, which comprises a case, a liquid cooling heat exchanger and a flow guide assembly, and is characterized in that the case comprises a shell, a fan, an MOS tube and a capacitor, the shell is internally provided with an upper layer cavity and a lower layer cavity, the upper layer cavity is located right above the lower layer cavity, the upper layer cavity is internally provided with an auxiliary source plate, and the lower layer cavity is internally provided with a liquid cooling heat exchanger; the flow guide assembly comprises a guide plate, a second gear, a second rack and a movable flow guide blade, the second rack is driven to slide in the guide plate, the second rack is meshed with the second gear, one end of the second gear is rotationally connected to the inner wall of the guide plate, and the other end of the second gear is connected with one end of the movable flow guide blade; through a two-stage adjusting mechanism of overall displacement coarse adjustment and blade angle fine adjustment and in combination with a partition locking function of an electromagnetic bolt, the system can carry out dynamic and differentiated air distribution on the upper-layer cavity and the lower-layer cavity, the overall heat dissipation requirement change can be quickly responded, and directional air supplement can be carried out on a local overheating area.

This invention belongs to the field of proportional pump technology, specifically relating to a proportional pump, including a support frame. A proportional control module, a stirring module, and a pumping module are sequentially mounted on the support frame. At least one proportional control module is mounted on the support frame. A controller mounting box is fixedly installed on the rear side of the support frame, and a controller is detachably installed inside the controller mounting box. The proportional control module, stirring module, and pumping module are connected via a pipeline module. Existing proportional pumps still have significant shortcomings in terms of proportional adjustment methods, mixing uniformity, output stability, modularity, and multi-component adaptability. This invention, using a proportional control module, stirring module, pumping module, and pipeline module, achieves real-time, high-precision proportional adjustment during operation, thorough and active stirring of the premixed liquid, continuous and stable pressure output without pulsation, and independent replacement and rapid maintenance of each module.

The invention relates to the technical field of power supplies, in particular to an output voltage calibration method and a power supply. Comprises: obtaining a target voltage; based on the output calibration coefficient and the target voltage, the current PWM duty ratio is calculated through the master controller according to a PWM duty ratio calibration formula; adjusting the output voltage based on the current PWM duty ratio through a hardware control loop; sampling the adjusted output voltage through a sampling module to obtain a sampling voltage; judging whether the error between the sampling voltage and the target voltage is within an allowable error range or not through the main controller; if yes, the calibration is successful; if not, updating the output calibration coefficient according to an output calibration coefficient updating formula, and then recalculating the current PWM duty ratio; by introducing the output calibration coefficient and dynamically updating the output calibration coefficient, the inherent error of an actual electronic element is accurately offset, so that the output voltage error is stabilized in an allowable range, the requirement of a high-precision voltage output scene is met, special working conditions do not need to be identified, and the software development difficulty is reduced.

The invention relates to a cleaning device and a control method thereof, the cleaning device comprises a cleaning part, a cleaning liquid supply part, a handheld part and an operation part, the cleaning part comprises a rotary cleaning structure, and the rotary cleaning structure can rotate around a preset axis to clean a surface to be cleaned; the cleaning fluid supply part is used for supplying cleaning fluid to the rotary cleaning structure; the handheld part is connected with the cleaning part, and the handheld part is used for driving the cleaning part to move; the operation part is arranged on the handheld part and used for controlling the rotating speed and / or the rotating direction of the rotating cleaning structure. The rotating speed and the rotating direction of the rotating cleaning structure are controlled through the operation part, so that when a user operates the operation part, active control over the cleaning strength of the cleaning device can be achieved, the adjusting response speed is high, the cleaning effect is improved, and the user experience is improved.

The invention relates to the field of aircraft control technology, in particular to a quadcopter control system based on visual SLAM; the control system comprises: an environment perception module, a server, and a flight control module; a comprehensive analysis is performed on the wind speed and air pressure of the environment in which the quadcopter is located to measure the influence of the wind speed and air pressure on the quadcopter, and a proofreading control instruction is generated accordingly; when the proofreading control instruction is received, the flight posture and rotor speed are adjusted according to the environmental state so that the quadcopter can adapt to the flight environment under different wind speed and air pressure conditions, and then the environment is repeatedly perceived and repeatedly adjusted according to the adjustment demand index, so that the quadcopter can make adjustments to the environmental changes more timely and maintain a stable flight state; more refined flight adjustments, enhanced environmental adaptability, faster adjustment response speed and a complete automated flight adjustment process are achieved, the complexity of operation can be reduced, and the intelligence and autonomy of the aircraft are improved.

The application relates to the technical field of integrated circuits, in particular to a duty cycle adjustment circuit capable of keeping the rising edge fixed delay. The duty cycle adjustment circuit comprises a first delay line module, a second delay line module, a logic operation unit, a first or logic operation unit and a multiplexer. The first input end and the second input end of the first delay line module are connected with a first delay control signal and an external input clock signal respectively, and the output of the first delay line module is a first delay clock signal. The first input end and the second input end of the second delay line module are connected with a second delay control signal and the external input clock signal respectively, and the output of the second delay line module is a second delay clock signal. The first input end and the second input end of the logic operation unit are connected with the first delay clock signal and the second delay clock signal respectively, and the output end of the logic operation unit is a clock and signal. The first input end and the second input end of the first or logic operation unit are connected with the first delay clock signal and the second delay clock signal respectively, and the output end of the first or logic operation unit is a clock or signal. The first input end and the second input end of the multiplexer are connected with the clock and signal and the clock or signal respectively, and the multiplexer is used for controlling the output of the clock and signal or the clock or signal according to a symbol bit signal. The application can accurately correct the duty cycle.

According to the monitoring circuit and the monitoring method for the grid characteristics of the power gallium nitride device, a constant micro current source is monitored to charge a grid capacitor Cgss of the power gallium nitride device, and the change of the grid capacitor Cgss of the power gallium nitride device is calculated by using a charging curve of the constant micro current source, so that the reliability of the grid of the power gallium nitride device is represented; the basic circuit comprises an isolation power supply unit, a constant micro current source, a signal comparison unit and a signal operation unit. The isolated power supply unit is used for supplying power to other units; the constant micro-current source injects constant grid current into the power gallium nitride device; the signal comparison unit is used for comparing the grid voltage vgss of the power gallium nitride device with a reference preset value Vthi; and the signal operation unit is used for controlling the output of the constant micro current source and feeding back a monitoring signal to the microprocessor. Therefore, the aging state of the power gallium nitride device can be accurately evaluated.

The application discloses a wave energy generating buoy capable of adjusting air turbine flow and a control method thereof. The buoy comprises an air turbine, a cam rotary disc, a driving gear, a driven gear, a servo motor, a driven shaft and a rigid buoy. An air chamber and a cavity are arranged in the rigid buoy, and an air pressure sensor and a liquid level sensor are arranged in the air chamber. The cam rotary disc is rotatably arranged between an air outlet and the air turbine, and is driven to rotate by the servo motor and a gear pair, so that the effective flow area of the air outlet is steplessly adjusted. The control method is based on the real-time collected air chamber pressure and liquid level change rate, calculates the optimal air chamber pressure corresponding to the optimal efficiency of the turbine, establishes the mapping relationship between the flow area and the pressure, and corrects the cam rotation angle in real time through PID closed loop control, so that the air chamber pressure dynamically tracks the optimal value. The application can optimize the wave energy capturing efficiency and the power generation power, widen the wave working condition adaptation range, and effectively prevent the turbine from being damaged by high-pressure air flow impact.

The invention relates to the technical field of aerostat control equipment, and provides a high-altitude balloon pod yaw control variable inertia flywheel which comprises a flywheel main disc, a flywheel auxiliary disc, a linkage assembly and a driving device. A plurality of limiting parts are arranged on a circle of the edge of the flywheel main disc at intervals, the flywheel auxiliary disc is rotationally arranged on the flywheel main disc, sliding grooves are formed in the positions close to the edge of the flywheel auxiliary disc, the sliding grooves and the limiting parts are arranged in a one-to-one correspondence mode, and part of bodies of the limiting parts are located in the sliding grooves; the driving device is arranged in the middle of the flywheel main disc, the driving device is connected with the flywheel auxiliary disc so as to drive the flywheel auxiliary disc to rotate through the driving device, a protruding cover body is arranged in the middle of the flywheel main disc, and the protruding cover body is fixedly connected with the flywheel main disc. Through the arrangement of the linkage assembly, the movement of the sliding block can be realized through the rotation of the driving device, so that the inertia adjustment is realized, the rotational inertia adjustment is realized, and the control precision is improved. And through a connecting rod connection rotation mode, the adjustment response is quicker, and quick adjustment can be realized.

The utility model relates to wire rod processing technical field, especially a kind of wire rod tinning extension transmission device, including rack, tin furnace, tin immersion wire component, extension transmission component, output wire component and cooling component, tin furnace is set on rack, tin immersion wire component is set at the top of tin furnace, and is provided with tin immersion wire support, one end of tin immersion wire support extends into tin furnace, for wire rod orientation output wire component guide;Extension transmission component is located at the top of tin immersion wire component, output wire component is set in extension transmission component, extension transmission component is used to drive output wire component relative movement towards tin furnace, to adjust the distance between output wire component and tin immersion wire component, cooling component is set on both sides of extension transmission component, for wire rod cooling in transmission process.The utility model can drive output wire component to move relative to tin furnace by extension transmission component, and the distance between output and tin immersion wire is accurately adjusted.

The invention provides a switching power supply circuit and a charger. The switching power supply circuit comprises a voltage conversion circuit, a temperature acquisition circuit, a first comparison circuit and a first control circuit, the output end of the voltage conversion circuit is connected with a charging interface of a charging load; the output end of the temperature acquisition circuit is connected with the input end of the first comparison circuit, and the output end of the first comparison circuit is connected with the first control circuit; the first control circuit is connected with the output end of the voltage conversion circuit; the voltage conversion circuit is used for providing required charging voltage and charging current for a charging interface of a charging load according to external power supply voltage output by an external power supply; the temperature acquisition circuit is used for acquiring the temperature of a preset detection point of the switching power supply circuit and generating a corresponding analog voltage based on the acquired temperature; the first comparison circuit is used for comparing the analog voltage with a pre-configured first reference voltage; the first control circuit is used for adjusting the charging voltage and / or the charging current output by the voltage conversion circuit according to the first comparison result.