23results about How to "Simple control system" patented technology

The application discloses a large-angle variable stiffness flexible joint, which is composed of a plurality of flexible joint modules stacked together; the flexible joint module comprises a lower chassis, a spiral winding type driver, an elastic main bone and an upper chassis, one end of the elastic main bone is connected with the upper chassis, and the other end is connected with the lower chassis; N spiral winding type drivers are connected between the upper chassis and the lower chassis, and N is greater than or equal to 3; the lower chassis is provided with a buckle mounting groove; the upper chassis is provided with a buckle; the spiral winding type driver is provided with a metal wire; the metal wire is connected with a control system; the elastic main bone is of a space groove type structure; the space groove type structure is provided with one or more symmetrical notches on the elastic main bone; and the stiffness of the elastic main bone is adjusted by adjusting three parameters of a groove height H, a groove inner diameter D and a groove spacing AH. The application adopts modular design and the elastic main bone is adjustable, and large-angle bending and variable stiffness of the flexible joint are realized.

The application provides a pressing cloth assembly of a dehydration device and a control method of the dehydration device. The pressing cloth assembly of the dehydration device comprises a pressing rod, and further comprises a support frame, a connecting rod and a driving member. The connecting rod is hingedly connected to the support frame and hingedly connected to a connecting link. The connecting link is arranged above or below the support frame and is slidable along the length direction of the pressing rod. The driving member is slidably connected to the pressing rod through a guide assembly. The extension direction of the guide assembly is parallel to the rotating surface of the connecting rod and is arranged at an angle with the connecting link. The moving path of the driving member is parallel to the connecting link. During the process that the driving member drives the pressing rod to slide along the connecting link, the connecting rod is driven to rotate, and the connecting link slides along the guide assembly. Through the above arrangement, one power source can drive the driving member to move towards the filter cylinder, so that the pressing rod is fed and pressed towards the filter cloth, the power source for driving the pressing rod is reduced, the cost of the equipment is reduced, and the control system of the pressing cloth assembly is simplified.

The invention discloses a power-assisted mechanism and a lower limb autonomous exercise device comprising the same. The power-assisted mechanism comprises an L-shaped supporting frame, and the L-shaped supporting frame is provided with a transverse plate and a vertical plate; the driving mechanism is fixedly installed on the L-shaped supporting frame, and the driving mechanism comprises a motor; the thigh assisting assembly comprises a first connecting plate rotationally connected with the transverse plate through a first rotating shaft and a second winding wheel driven by the motor and wound with a first rope, and the free end of the first rope is connected to the first connecting plate; the invention belongs to the technical field of lower limb rehabilitation, and achieves the technical effects that a double-winding-wheel synchronous rope winding and unwinding system is adopted, one winding wheel directly acts on a first connecting plate corresponding to a thigh through a rope, and lifting assistance is provided; and the other winding wheel drags the movable frame through the other rope pulley block, so that the motion trail of the second shank part connecting plate is accurately controlled.

The utility model discloses a kind of composite wax filling machines, comprising: composite wax storage tank, shunt cavity, opening and closing mechanism, transmission mechanism, power mechanism, pipeline, cooling box, when filling successively, plugging block is prevented to the liquid outlet pipe under blocking, let the remaining composite wax of liquid outlet pipe, splashproof cover discharge, after pusher plate is pushed down multiple transmission rod, let plugging flexible surface unfold, to prevent splashproof cover lower end and be blocked, prevent the composite wax drop on transmission mechanism on splashproof cover wall surface residual, by analogy, second opening and closing mechanism, first opening and closing mechanism sequentially act other liquid outlet pipe, the closure of splashproof cover, the power of whole process is unified when composite wax storage tank rotates, to be less power mechanism, and control system is simple.

The utility model relates to the technical field of cast aluminum alloy production, and provides an automatic marking device for a cast aluminum alloy intelligent production line, which comprises a water tank, a rack is fixedly connected in the water tank, the top of the rack is provided with a conveying belt, the side surface of the rack is provided with a driving motor, and the driving motor is connected with the rack. An aluminum ingot mold is fixedly connected to the top of the conveying belt, an automatic marking mechanism is arranged in the rack and comprises a bearing seat, the bearing seat is fixedly connected to the side face of the rack, and a rotating shaft is rotationally connected to the side face of the bearing seat. In the utility model, the typewriting head adopts a motion form similar to a swing arm, and the reciprocating swing typewriting is realized through the matching of the balancing weight and the roller on the conveying line. According to the design, the motion energy of the production line is ingeniously utilized, an additional power device is not needed, energy consumption and equipment cost are reduced, and meanwhile a control system is simplified.

The utility model discloses a compressor assembly, heat management system and car relates to heat management system technical field, the compressor assembly includes: compressor body, the compressor body has motor, heat exchange structure is located one end at the compressor body, and is formed with the compressor body cooperation electric control cavity, the heat exchange structure is equipped with heat exchange passage, and with first import and first export of heat exchange passage intercommunication, heater is located the heat exchange structure, and is equipped with heating channel, and with second import and second export of heating channel intercommunication, and the second import is linked together with first export, and control assembly is located electric control cavity, and is combined with heat exchange structure setting, control assembly electricity is connected heater and compressor body's motor. The utility model discloses technical scheme, has reduced the power consumption of heat management system.

The invention discloses a high-reliability complex coefficient repetitive control grid-connected inverter control system and method suitable for a power supply protection scene, and the method comprises the steps: building an LCL type grid-connected inverter mathematical model under an alpha-beta static coordinate system for a three-phase grid-connected inverter, and saving Park transformation and decoupling calculation under a dq coordinate system; a complex coefficient filter H (s) and a complex coefficient repetitive controller are designed to form a double-input double-output control structure, and a complex coefficient imaginary part omega m is set to be equal to a fundamental frequency omega 0, so that the gain of the controller at the fundamental frequency is infinite, and complete tracking of periodic signals is realized; and the dynamic response capability of the system is improved by combining an output feedback control law. According to the method, the grid-side voltage imbalance and harmonic pollution can be effectively suppressed, the grid-connected current THD can be remarkably reduced, and the method has good dynamic control performance and robustness, is suitable for a grid-connected power generation system of new energy such as solar energy and wind energy, and plays an important supporting role in improving the power supply reliability and supply guarantee capability of a power system under the new energy access background.

This invention provides a biomimetic pet toy, comprising a shell, a drive unit, a circuit board, four legs, and a head. The drive unit and circuit board are installed inside the shell. The circuit board is connected to a horn, and the drive unit drives the legs and the tongue of the head via a linkage. The drive unit consists of a motor and a reduction gear set, which is divided into an overload clutch gear set, a limb gear set, and a head gear set. The motor drives the overload clutch gear set and the head gear set, enabling the legs to walk and the head and tongue to swing and extend / retract. The circuit board controls the motor's operation, the horn emits sound, and the battery box provides power. This toy has a simple structure, low cost, and can perform multiple actions, meeting the basic requirements of a biomimetic pet toy.

The utility model discloses an integrated pet feed processing device, relates to the technical field of feed processing, and aims to solve the problems that two groups of independent conveying hoppers need to occupy a relatively large mounting space, so that a forming machine body is bloated in structure, and miniaturization and intensive production of equipment are not facilitated. A partition plate for dividing the space into two parts is arranged in the conveying hopper, two groups of stirring paddles which are symmetrically arranged by taking the partition plate as a center line are arranged on the inner wall of the conveying hopper, the stirring paddles are driven by a transmission mechanism, two groups of symmetrical bottom plates are arranged at the bottom of the conveying hopper, and the bottom plates and the partition plate are connected through an alternating mechanism; the partition plate and the switching mechanism are arranged in the single conveying hopper, the functions of two traditional independent conveying hoppers are integrated, the installation space of equipment is remarkably saved, the structure of a forming machine body is more compact, and miniaturization design of the equipment and reasonable layout of a production line are facilitated.

The invention relates to gramophone product shell injection molding processing equipment which comprises a rack, an extrusion device fixedly installed on one side of the upper end of the rack and a mold closing box arranged on the other side of the upper end of the rack, an extrusion material pipe is arranged at the output end of the extrusion device, an injection mold is arranged in the mold closing box, and the injection mold is composed of a movable mold plate and a fixed mold plate. Forming cavities are formed in the opposite faces of the movable mold plate and the fixed mold plate, a sprue plate is arranged at the end, close to the extrusion device, of the injection mold installed on the mold closing box, and a telescopic air cylinder is fixedly installed at the end, away from the extrusion device, of the mold closing box; a single rotary distribution structure is adopted to complete sequence switching of multiple sprues, the driving assembly drives the annular base to rotate, multiple sets of independent hydraulic units are not needed, a control system is simplified, the number of sealing pieces and the high-pressure leakage risk are reduced, the situation that single valve needle breaks down and influences operation of equipment is avoided, valve needle-free type time sequence control is achieved, and the service life of the equipment is prolonged. And the equipment cost and the failure rate are reduced.

The application relates to a magnetic fluid permanent magnetic hybrid bearing, which is mainly characterized in that magnetic fluid is added in a bearing gap, a permanent magnet is installed on a bearing rotating shaft, a controllable magnetic circuit is generated by controlling a coil through a power electronic circuit, the permanent magnet on the bearing rotating shaft is attracted, and the rotating shaft is suspended and rotates in a bearing inner cavity. The application also optimizes a control method of the hybrid bearing, improves effective stiffness and damping of high-frequency oscillation outside a controller bandwidth, and improves dynamic performance of the hybrid bearing. Meanwhile, the application solves the problems of high power consumption and high-frequency mode control of a traditional magnetic bearing through a magnetic fluid and permanent magnetic hybrid control scheme, and has good bearing capacity and dynamic performance.

The invention discloses a die-casting die for server shell parts, and relates to the technical field of shell part die-casting, the die-casting die comprises a die-casting die composed of a first die holder and a second die holder which are laterally opened, and a lubricating pipe installed on the first die holder and storing lubricating oil in the lubricating pipe; the inclined guide column is installed in the first die holder and penetrates through the lubricating pipe and the first die holder, a lubricating channel is arranged on the outer wall of the inclined guide column, the sealing sleeve is arranged at a port of the lubricating pipe, the inclined guide column penetrates through the sealing sleeve, and a sealing ring which is expanded through air inflation and shrunk through air exhaust is arranged on the inner circumferential face, making contact with the inclined guide column, of the sealing sleeve. By arranging the lubricating pipe with the liquid level sensor and the oil supplementing assembly, lubricating oil can be automatically detected and supplemented in the mold closing process, the sealing ring controlled by the pneumatic part is arranged at the end opening of the lubricating pipe, and the sealing ring automatically expands or contracts along with the mold opening and closing action of the mold. And the power piece and the pneumatic piece are linked with the mold closing action, so that supply and distribution of lubricating oil, opening and closing of the channel and the mold opening and closing process of the mold are automatically synchronized.

The utility model discloses a frame engine support rapid welding device which comprises a supporting seat frame, a placing plate is arranged on the upper surface of the supporting seat frame, transverse moving sets are arranged on the two sides of the placing plate, side support plates are arranged on the transverse moving sets, a longitudinal moving set is arranged on one side of each side support plate, and a transverse moving set is arranged on the other side of each side support plate. A transverse moving set is arranged on the transverse moving set, a longitudinal moving set is arranged on the transverse moving set, a rotating driving piece is arranged on the longitudinal moving set, the output end of the rotating driving piece is connected with a welding set, and longitudinal and transverse grooves are formed in the placing plate. The welding set can flexibly move in a three-dimensional space through the rotating function provided by the transverse moving set, the longitudinal moving set and the rotating driving piece; it is ensured that the welding head can cover any position on the workpiece; the flexibility and accuracy of welding operation are greatly improved through the multi-axis movement capacity, the rotary driving piece allows the welding set to approach a welding point from multiple angles, and the welding device is very suitable for processing workpieces with complex geometric structures, such as curved surface or irregular shape welding tasks.

The utility model relates to the technical field of household appliances, and discloses an air duct switch control device and cooking equipment, the air duct switch control device comprises an air duct baffle plate and a self-resetting driving mechanism, the self-resetting driving mechanism is used for controlling the air duct baffle plate to act to open or close an air duct opening, the device comprises a driving motor, a transmission part, a screw rod, a nut, a clutch and an elastic reset part, the output end of the driving motor is in transmission connection with the lead screw through a transmission piece. The nut and the lead screw form a screw pair and are connected to the air duct baffle. The clutch is arranged between the transmission part and the screw rod and is used for connecting or cutting off power connection between the transmission part and the screw rod; the elastic reset piece is connected with the lead screw. According to the air duct opening and closing control device, the self-resetting driving mechanism integrating the clutch, the thread transmission and the elastic resetting piece is adopted, accurate control over opening and closing of the air duct opening is achieved, automatic resetting of the air duct baffle is achieved through the elastic resetting piece, and reliability and safety are improved.

A bioaerosol monitoring device based on intrinsic fluorescence and polarized scattered light is disclosed. The device comprises a pump unit, a particle concentration unit, an optical detection unit, and a depth calculation model unit. It employs a single 405nm laser light source and, through an integrated optical path design, utilizes a dichroic mirror and a semi-transparent, semi-reflective beam splitter to divide the excitation light path into intrinsic fluorescence and scattered light paths. Horizontal and vertical polarizers are introduced into the scattered light path, enabling simultaneous measurement of the intrinsic fluorescence and horizontal and vertical polarized scattered light of individual aerosol particles. This method fuses multi-dimensional optical information to generate a unique digital fingerprint for each particle and employs a convolutional neural network (CNN) deep learning algorithm for identification and classification. This invention overcomes the errors of multi-path time-division detection, improves the classification accuracy and anti-interference capability of bioaerosols in complex environments, and also has the advantages of compact structure and low cost.

The invention relates to the technical field of water heaters, and provides an electric water heater and a control method.The electric water heater comprises a box body, a high liquid level probe, a low liquid level probe, a liquid level emission probe and a controller, and a liquid storage space is formed in the box body; the low-liquid-level probe is arranged below the high-liquid-level probe, and the low-liquid-level probe is configured to be capable of switching between the modes of the electronic anode and the liquid level detection component; the liquid level emission probe is flush with the low liquid level probe or is positioned below the low liquid level probe; the high-liquid-level probe, the low-liquid-level probe and the liquid-level emission probe are all in communication connection with the controller, and the controller controls the low-liquid-level probe to be switched among different modes based on a preset strategy. According to the invention, the low liquid level probe is configured to be the electronic anode and the liquid level detection part, so that the two-in-one function of the electronic anode and the liquid level detection function is realized, the number of parts in the box body is reduced, the occupation of the parts on the space in the box body is reduced, the production cost is reduced, and the control system is simplified.

The application relates to a reciprocating optical swing mirror motor, which comprises a stator base, a stator fixed opposite to the stator base and a coil winding, and further comprises a rotor and a mirror assembly fixed opposite to each other, the mirror assembly comprises a mirror frame and a mirror arranged on the outer surface of the mirror frame, a cavity is arranged in the mirror frame, a rotating shaft penetrates through the cavity and the top end of the rotating shaft is fixed opposite to the mirror frame, the mirror frame is buckled on the stator base, and the rotating shaft is rotatably arranged on the stator through a bearing; the coil winding is a tooth-groove-free hollow cup coil winding and is arranged between the stator and the rotor. The coil winding of the reciprocating optical swing mirror motor is composed of a tooth-groove-free hollow cup coil, the motor is directly driven to rotate through electromagnetic force, a closed loop force control mode is supported, the response time is fast, the magnetic resistance torque is eliminated through the non-iron core design, the low-speed movement is smooth (without shaking), and the positioning precision and the repeatability are improved.

The application discloses a boarding bridge and control system of a flight simulator, which comprises a boarding bridge platform, an electrical control cabinet, a folding guardrail mechanism, a bridge body and a detection device, wherein the boarding bridge platform is assembled by a bottom support, a stand, a control cabinet mounting frame, a supporting leg, a connecting plate, a platform and a platform guardrail through bolts; the electrical control cabinet internally comprises a PLC controller, a circuit breaker, a contactor, a frequency converter, a connector and a button switch, so as to realize the collection, processing and motion execution of the boarding bridge control signal of the position state monitoring, external control information and bridge safety information of the boarding bridge and the motion platform controller; the folding guardrail mechanism 3 is a pure mechanical structure, which is assembled by a small bearing seat, a connecting rod, a connecting piece, a short connecting rod and a long connecting rod through bearings, wear-resistant pads and pin shafts, and can realize automatic folding and unfolding according to the lifting of the bridge surface.

This invention relates to a system and method for interstage cooling of a BOG compressor in an LNG receiving terminal. The system includes: a BOG compressor, a coiled-tube heat exchanger, a pressurization and vaporization system, and a control system. The BOG compressor includes an inlet buffer, a cylinder, and an exhaust buffer. The control system includes: temperature sensors, a temperature transmitter, a PLC control loop, a DCS control system, a TCV control valve, and a condition selector. The system uses BOG as a heat source and LNG as a cold source. Heat exchange occurs in the coiled-tube heat exchanger. The cooled BOG is then delivered to the next stage of the BOG compressor, while the heated LNG is delivered to the pressurization and vaporization system. A temperature sensor is installed on the outlet pipeline of the coiled-tube heat exchanger. The temperature signal is transmitted to the temperature transmitter, then through the PLC control loop to the DCS control system, and finally fed back to the TCV control valve located on the LNG pipeline. This controls the LNG flow rate into the coiled-tube heat exchanger, thus achieving cooling capacity control.

The application discloses a kind of cascade H bridge converter and parallel branch modulation method and pre-charging method thereof, on the basis of traditional cascade H bridge converter, and parallel branch is connected with the positive end and / or negative end of adjacent H bridge module capacitor;Positive parallel branch is connected to the positive end of capacitor, and negative parallel branch is connected to the negative end of capacitor;Parallel branch is composed of bidirectional switch.The application connects the positive and negative ends of each sub-module capacitor by parallel branch, realizes the balance of H bridge module capacitor in sequence by conducting parallel branch in the zero state of traditional cascade H bridge converter;The topology avoids the sampling of each module DC voltage, high-speed data transmission and high computational resource consumption capacitor voltage balancing control algorithm, with the advantages of simple circuit structure and control system, low cost, small size, good voltage-sharing effect, easy to expand, etc.

The utility model belongs to the technical field of manipulators, and particularly relates to a flexible claw of an industrial robot, which synchronously drives a plurality of stay wires through a single output shaft of a stay wire control mechanism, realizes cooperative opening and closing of a clamping mechanism, simplifies a control system, and improves the working efficiency. The stay wire control mechanism is flexibly connected with a stay wire through a wire pipe, so that interference between different clamping mechanisms and other parts is avoided, meanwhile, the clamping mechanisms can be flexibly fixed to the upper side of the mounting plate through spline heads and spline holes, and the purpose that the positions and angles of the clamping mechanisms can be flexibly adjusted by claws according to the sizes of workpieces can be achieved; the flexibility and the grabbing capacity of the claw hand are improved, the structure is simple, and meanwhile the investment cost of factory equipment can be reduced.