Abstract: Disclosed are a waist structure of a robot. The waist structure includes: a fixed platform, a connector, a movable platform, a load-carrying bearing and two motors arranged on the fixed platform, and two drive assemblies. The connector includes first and second ends facing away from each other; the first end is provided with a yaw shaft connected to an inner ring of the load-carrying bearing; and the second end is provided with a pitch shaft rotatably connected to the movable platform. Each drive assembly corresponds to one motor, and the drive assemblies are connected to the movable platform and the corresponding motors. The motors can actuate the drive assemblies to drive the movable platform to rotate relative to the connector in an axial direction of the pitch shaft and the connector to rotate relative to the fixed platform in an axial direction of the yaw shaft.

Abstract: A heat insulation and preservation composite board includes a first panel layer and a heat insulation and preservation layer. The heat insulation and preservation layer and the first panel layer are integrally formed. The first panel layer is a fiber-reinforced resin-based composite sheet, a metal plate, a cement plate, a calcium silicate plate, or a gypsum plate. The heat insulation and preservation layer is a fiber-reinforced aerogel felt. A preparation method of the heat insulation and preservation composite board includes: (1) laying the fiber-reinforced aerogel felt flat; (2) laying the first panel layer flat on the upper surface of the fiber-reinforced aerogel felt; (3) performing a hot-press molding process to obtain the heat insulation and preservation composite board.

Abstract: The disclosure relates to a sandwich composite board and a preparation method thereof. The sandwich composite board includes, from top to bottom, an upper panel layer, a core material layer, and a lower panel layer, wherein the upper panel layer and the lower panel layer are glass or fiber reinforced resin-based composite sheets; and the core material layer is composed of an aerogel, a resin, and an expandable microsphere foaming agent. Method (1) includes: heating and melting the resin to obtain slurry A, cooling the same, adding the aerogel and the expandable microsphere foaming agent thereto, and uniformly mixing the same to obtain slurry B, then flat-laying the lower panel layer, coating or printing with the slurry B, then laying the upper panel layer and hot press molding the same.

Abstract: The present disclosure provides a preparation method of an aluminum silicate fiber-reinforced aerogel felt, including the following steps: mixing orthosilicate, ethanol, and water evenly, adding an NH4F solution and ammonia water successively, and stirring evenly to obtain a silica sol; winding an aluminum silicate fiber felt into a roll and mounting on a rotatable central shaft of a impregnation reaction kettle; where a plurality of injection holes are equidistantly provided on a surface of the reaction kettle; the central shaft of the reaction kettle drives the aluminum silicate fiber felt to rotate and slowly inject the silica sol into the surface of the fiber felt through the injection holes to conduct the impregnation; allowing the fiber felt-gel composite to stand to conduct aging; placing the aged fiber felt-gel composite in absolute ethanol to conduct solvent replacement to remove moisture; and drying to obtain the aluminum silicate fiber-reinforced aerogel felt.

Abstract: A drainage system for a pressure-assisted flush water tank includes a tank main body and a drainage structure. The drainage structure includes an accommodating chamber and a membrane. The accommodating chamber has a drain outlet, a water inlet, and a drainpipe. The membrane partitions the accommodating chamber into a back-pressure chamber and a drainage chamber and is provided with a supplement hole that communicates the back-pressure chamber with the drainage chamber. The drain outlet is communicated with the back-pressure chamber, while the water inlet and the drainpipe are both communicated with the drainage chamber. The tank main body defines therein a storage chamber communicated with the water inlet. The membrane moves toward or departs from the drainpipe as a pressure in the back-pressure chamber varies so as to close or open the drainpipe.

Abstract: A drainage control device includes a main body, an upper cover, a lower cover, a pressure relief cover, a membrane, and a return member. The main body has a water filling trough, a drainage trough, and a water passage trough. A drainage chamber having a drainage port is defined between the upper cover and the drainage trough. A water filling chamber has a water filling port is defined between the lower cover and the water filling trough. The pressure relief cover and the main body hold a periphery of the membrane. A water passage chamber is defined between the membrane and the water passage trough. A back-pressure chamber having a drain port is defined between the membrane and the pressure relief cover. The membrane is configured to open or close a junction of the water passage chamber and the drainage chamber. The membrane is returned by the return member.

Abstract: This application relates to the field of robot control, and provides a motion state control method and apparatus, a device, and a readable storage medium. The method includes the following steps: Step 301: Acquire basic data and motion state data, the basic data being used for representing a structural feature of a wheeled robot, and the motion state data being used for representing a motion feature of the wheeled robot. Step 302: Determine a state matrix of the wheeled robot based on the basic data and the motion state data, the state matrix being related to an interference parameter of the wheeled robot, the interference parameter corresponding to a balance error of the wheeled robot. Step 303: Determine, based on the state matrix, a torque for controlling the wheeled robot. Step 304: Control, by using the torque, the wheeled robot to be in a standstill state.

Abstract: A schema is generated to establish a connection between user devices and one or more patient record servers. Generating a schema can include receiving configuration information associated with a patient record gateway, wherein the patient record gateway is associated with one or more patient record servers configured for storing electronic health records for a plurality of patients. Generating a schema can include defining, based at least in part on the configuration information, a schema configured to enable user devices to retrieve, via the patient record gateway, electronic health records from the one or more patient record servers. A schema can be requested by a user device. The schema can be sent to a user device to establish a connection with the one or more patient record servers.

Abstract: A method includes: obtaining current motion state data of the wheel-legged robot, the current motion state data representing motion features of the wheel-legged robot, inputting the current motion state data into a nonlinear controller to obtain a target joint angular acceleration reference value of a target robot joint of the wheel-legged robot, and inputting the target joint angular acceleration reference value into a whole-body dynamics controller to output a joint torque for controlling the wheel-legged robot to perform a control task.

Abstract: A bilateral teleoperation system includes: a primary-end operation platform and a secondary-end operation platform. The primary-end operation platform includes: a primary-end support, primary-end mechanical arms, a mechanical hand control assembly, and a first controller, a root end of the primary-end mechanical arm being arranged on the primary-end support, and a tail end of the primary-end mechanical arm being connected to the mechanical hand control assembly.

Abstract: A manipulator is provided. The manipulator includes at least two mechanical fingers. Each of the at least two mechanical fingers includes a first finger segment, a second finger segment, and a third finger segment, a bottom portion of the third finger segment of the respective mechanical finger is movably connected to a top portion of the second finger segment of the respective mechanical finger, and a bottom portion of the second finger segment of the respective mechanical finger is movably connected to a top portion of the first finger segment of the respective mechanical finger. The manipulator further includes a finger driving assembly for each of the at least two mechanical fingers. The finger driving assembly for each of the at least two mechanical fingers includes a plurality of motors that are configured to drive a different one of the finger segments of the respective mechanical finger.

Abstract: A patient record gateway of an electronic health record system can be validated using a conformance statement that defines capabilities and characteristics of patient record servers associated with the gateway. Part of validating the patient record gateway includes performing a configuration test of the patient record gateway using the conformance statement.

Abstract: A mechanical leg comprises a frame, a retractable member, a wheel, an extension and retraction driving member, a travel driving member, an auxiliary leg, and an auxiliary wheel. The extension and retraction driving member is located on a side of the frame. The retractable member is connected to the extension and retraction driving member. The wheel is connected to the retractable member. The wheel is further connected to the travel driving member. A first end of the auxiliary leg is connected to the auxiliary wheel, and a second end of the auxiliary leg is located on the frame. The retractable member extends under the driving of the extension and retraction driving member to drive the wheel to jump. The wheel is driven by the travel driving member to move. When the auxiliary wheel contacts the ground, the mechanical leg moves with the rolling of the wheel and the auxiliary wheel.

Abstract: An atomization generator and a special high-pressure atomization generation device for increasing oil and gas field recovery are provided. The special high-pressure atomization generation device for increasing oil and gas field recovery includes an agent pot assembly, a gear pump, a metering pump, an atomization generator and pipelines. The gear pump is connected with the agent pot assembly through an agent pot liquid inlet pipe. The metering pump is arranged between the agent pot assembly and the atomization generator which are connected through the low-pressure manifold pipeline and the high-pressure liquid inlet pipeline. The high-pressure liquid inlet pipeline is connected with the liquid inlet pipe. The liquid inlet pipes are connected with the metering pump. The gas inlet pipe is connected with the high-pressure gas source through the high-pressure gas inlet pipe. The gas inlet cap is provided with a gas inlet pipe.

Abstract: A hand exoskeleton includes at least one mechanical finger and a mechanical palm; and the mechanical finger includes a finger section, a rod assembly and a motor, the finger section includes a first finger section and a second finger section, and the rod assembly includes a first rod assembly and a second rod assembly. The motor capable of controlling the hand exoskeleton is arranged in the hand exoskeleton, and motion constraint on the finger section is realized by constraining a rod through the motor in the movement process of the hand exoskeleton, so that motion limitation on the hand exoskeleton is realized.

Abstract: A method of forming a semiconductor structure includes: providing an initial substrate having a first region and a second region; forming a first substrate on the initial substrate; forming a first insulating layer on the first substrate; forming a second substrate on the first insulating layer; removing the second substrate in the second region to form a second insulating layer on the first insulating layer in the second region; and forming a plurality of passive devices on the second insulating layer in the second region and forming a plurality of active devices on the second substrate in the first region.

Abstract: An anode target, a ray light source, a computed tomography device, and an imaging method, which relate to the technical field of ray processing. The anode target comprises a first anode target, a second anode target, and a ceramic plate. The first anode target is used for enabling, by means of a first voltage carried on the first anode target, an electron beam emitted by a cathode to generate a first ray on a target spot of the first anode target. The second anode target is used for enabling, by means of a second voltage carried on the second anode target, an electron beam emitted by the cathode to generate a second tray on a target spot of the second anode. The ceramic plate is used for isolating the first anode target from the second anode target. By means of the anode target, the ray light source, the computed tomography device and the imaging method, dual-energy distributed ray imaging data can be provided and the imaging quality of a ray system can be improved.

Abstract: This application provides a foot device of a bionic machine and a bionic machine relating to bionic machine technologies. The foot device includes a foot body, a pressure sensor, and a distance sensor. The pressure sensor is connected to the foot body for detecting a pressure between a bottom end surface and the ground. The distance sensor is located on the bottom end surface of the foot body, is connected to the foot body, for detecting a distance between the bottom end surface and the ground. When the bionic machine moves, the distance sensor transmits a distance detection signal indicating a distance between a sole component of the foot body and the ground to a control device of the bionic machine, and the pressure sensor transmits a pressure detection signal indicating a contact pressure between the sole component and the ground to the control device.

Abstract: A robot comprises a wheel-footed bimodal mechanical leg having a driving apparatus, a thigh unit, and a calf unit. A joint end of the thigh unit is hingedly connected to a joint end of the calf unit by a rotary shaft. The driving apparatus is connected to the rotary shaft by a transmission apparatus. The calf unit comprise a locking mechanism. The robot can operate in a footed mode and a wheeled mode. In the footed mode, the calf units and the rotary shafts in n mechanical legs are fixedly connected to each other, where n is an integer that is at least two. In the wheeled mode, the calf units and the rotary shafts in at least two wheel-footed bimodal mechanical legs are rotatably connected to each other.

Abstract: This application discloses a motion platform, a haptic feedback device, and a human-computer interactive system. The motion platform includes a first platform, a second platform and a linkage assembly, the first platform and the second platform being connected by the linkage assembly, the second platform being configured to move relative to the first platform. The first platform comprises a first power take-off and a second power take-off, the first power take-off comprising a first output shaft and the second power take-off comprising a second output shaft. The linkage assembly comprises a first parallelogram linkage mechanism and a second parallelogram linkage mechanism connected to each other, and a two-bar linkage mechanism. The two-bar linkage mechanism and the first parallelogram linkage mechanism have the same plane of motion, and the second output shaft being configured to drive motion of the two-bar linkage mechanism.