229results about How to "Convenient speed control" patented technology

The invention discloses a trajectory tracking control method used for an automatic driving robot of a vehicle, which relates to electronic control technologies of vehicles. The desired trajectory of a vehicle is described in a data point mode to obtain the current position information of the vehicle; humanoid driving is carried out according to the current driving direction at the current vehicle position to preview a distance ahead; the position obtained by previewing is compared with the desired trajectory to determine the lateral position deviation, the angle deviation and the vehicle speed deviation of the coordinate position obtained by previewing relative to the desired trajectory; then, the vehicle direction is jointly controlled by a trajectory tracking and speed controller according to position deviation and direction deviation; and according to vehicle speed deviation, the control quantities of an accelerator pedal and a brake pedal are determined with a fuzzy control method. The trajectory tracking control method is suitable for controlling the trajectory tracking of any trajectory, various vehicle types and various working conditions, and an automatic driving robot performs the control. The trajectory tracking control method has high precision and good repeatability and has an important meaning for guaranteeing the quality of vehicle reliability experiments and improving experiment safety.

The invention discloses a counterweight load system on fitness equipment. The counterweight load system comprises a fitness device support, a tensile force cable, a motor, a motor driving module and a motor control unit. The motor is installed on the fitness device support and can rotate, the tensile force cable is wound around the motor, one end of the tensile force cable is connected with a rotor of the motor, and the other end of the tensile force cable is connected with a force driving mechanism on the fitness equipment. The force driving mechanism is used for driving the motor to rotate through the tensile force cable so as to generate tensile force, and the motor control unit controls the motor to rotate in the reverse direction through the motor driving module and makes the motor generate loading capacity opposite to the tensile force. The counterweight load system on the fitness equipment is simple in structure and light, and the stepless regulation of the counterweight is performed.

The invention discloses a permanent-magnetic speed regulator, which comprises a first shaft, a second shaft, a cage rotor and permanent-magnetic turntables. A permanent-magnetic rotor comprises two disk permanent-magnetic turntables and a central turntable, wherein the central turntable is connected with the second shaft, and the permanent-magnetic turntables are connected with the central turntable through a pin shaft and a gear rack device; and the gear rack device comprises racks vertically arranged on the permanent-magnetic turntables and a gear arranged on the central turntable, the racks are engaged with the gear, and the gear rack device enables the two permanent-magnetic turntables to do reverse equidistance motion along the shaft. The double-cylindrical turntable permanent-magnetic speed regulator has large coupling face by replacing cylindrical and planar double coupling for single-side coupling, and realizes non-contact transmission of power with large transmission torque; the permanent-magnetic turntables can move along the axial direction to change the distance from a conductor plate and the effective part engaged with a conductor cylinder so as to change the torque transferred between the permanent-magnetic turntables; and the permanent-magnetic speed regulator can realize repeatable, adjustable and controllable output torque and rotational speed and fulfill the purposes of energy-saving speed regulation, and has balanced axial force.

The inverter comprises a diode bridge (21) that rectifies an inputted three-phase AC voltage into a DC voltage, an inverter section (22) that converts the DC voltage converted by the diode bridge (21) into an AC voltage and outputs the resulting voltage, an LC filter that has an inductor L_dc connected between one output terminal of the diode bridge (21) and one input terminal of the inverter section and a capacitor C_dc connected across the input terminals of the inverter section, a voltage detecting section (24) that detects cross terminal voltage of the inductor L_dc, and a control section (100) that controls the inverter section (22). The control section (100) controls the inverter section (22) so that the transfer characteristic of the I/O voltage of the inverter section (22) becomes a characteristic of the first-order lag system on the basis of the cross terminal voltage of the inductor L_dc detected by the voltage detecting section (24).

The invention discloses a device for efficiently preparing superfine spherical metal powder with a high melting point. The device comprises a shell, and a crucible and a powder collecting area which are arranged in a chamber of the shell, and is characterized in that a plurality of melting pools with the same volume are formed inside the crucible, and gaskets with small holes which are communicated with the chamber are fixed at the bottoms of the melting pools; a transmission rod comprises transmission support rods with the number the same as that of the melting pools, and the bottoms of the transmission support rods are aligned with circular holes in the gaskets with small holes; a thermocouple is arranged inside the crucible, and an induction heater is arranged outside the crucible; and the powder collecting area comprises a rotating disk which is used for atomizing metal droplets and is arranged at the bottom of the chamber and connected with a motor, and a collecting tank is also formed in the bottom of the chamber. The invention also discloses a method for efficiently preparing superfine spherical metal powder with the high melting point. By mainly combining a pulse micropore injection method with a centrifugal atomization method, the method can be used for preparing superfine spherical metal powder which is narrow in particle size distribution interval, high in sphericity, good in spreadability and liquidity, and high in production efficiency, and meets the 3D printing and using requirements.

The invention discloses a friction performance testing device for a slipper pair of a high-pressure axial plunger pump. The left and right sides of a box body are respectively provided with a high-pressure oil chamber and a sealed experiment chamber; the left and right ends of the box body are respectively provided with a left end cover and a right end cover of the box body; the high-pressure oil chamber is internally provided with a thrust piston; the end part of a piston rod of the thrust piston is arranged in the sealed experiment chamber and is connected with a slipper for testing through a connecting bolt; a swash plate stationary shaft is arranged on the right end cover of the box body; one end of the stationary swash plate shaft is arranged in the sealed experiment chamber, and a swash plate for testing is connected to the end through a bolt; and the other end of the swash plate stationary shaft is connected with a variable-frequency motor through a shaft coupling, and the variable-frequency motor is controlled by a frequency converter. By using the friction performance testing device, not only can the dry friction performance of the slipper pair of the high-pressure axial plunger pump be tested, but also different working states can be simulated to test. The friction performance testing device has the advantages of simple structure, convenience in use, accuracy in testing, low manufacturing and using costs and the like.

A fatigue strength test stand of a locomotive bogie is as follows: drive eccentric shafts of a front drive eccentric wheel and a back drive eccentric wheel are fixed on one side of the bogie through a bearing and a bearing seat; driven eccentric shafts of a front driven eccentric wheel and a back driven eccentric wheel are fixed on the other side of the bogie through a bearing and a bearing seat; the front and the back drive eccentric shafts are respectively connected with a drive device. The test stand can simulate the vertical vibration, the transverse vibration, the nodding and the compound vibration of the bogie in full range so as to truly measure the fatigue life of the bogie, thereby determine the life cycle, and providing reliable guarantee for the safe operation of the locomotive. The test stand has the advantages of simple structure and convenient operation.

The present invention discloses a novel permanent magnet speed regulator using a rotary salient pole to adjust magnetic flux. The novel permanent magnet speed regulator comprises a driving shaft and a driven shaft, the driving shaft is fixedly equipped with a cylindrical conductor rotor, and a permanent magnet rotor of which one end is fixed to the driven shaft is arranged in a chamber formed by the cylindrical conductor rotor. Moreover, a radial gap exists between the permanent magnet rotor and the cylindrical conductor rotor, a ratchet wheel sleeve rotating together with the driven shaft and a salient pole magnetic conductive magnet yoke capable of rotating relatively on the ratchet wheel sleeve are arranged at the lower part of the other end of the permanent magnet rotor, and a plurality of tangential permanent magnet magnetic steels are arranged in the permanent magnet rotor at equal intervals. According to the present invention, the problem that a conventional cylindrical permanent magnet speed regulator adjusts the relative positions of the permanent magnet rotor and the cylindrical conductor rotor in an axial direction to reduce the large the occupied space of an effective part of the coupling area of the permanent magnet rotor and the conductor rotor is avoided, an additional axial space is not needed, and an adjusting mechanism, such as an additional complicated cylinder is also not needed, so that the whole speed regulator is more compact and reasonable in structure, and a transmission torque under the same size is improved substantially.

A miniature pig running machine belongs to the technical field of animal training or exercise equipment. The invention provides a miniature pig running machine having the advantages of good protective properties and reliability, convenient observation and easy operation. The running machine comprises a supporting framework, wherein the front end of the bottom of the supporting frame is provided with wheels, and the back end is provided with adjusting supporting feet; the front end of the top of the supporting frame is provided with a motor cover and an upright pole, the upright pole is provided with an instrument operation display panel, the back end of the motor cover is provided with a Z-shaped baffle, a lower end horizontal plate of the Z-shaped baffle is pressed under the lower end face of the motor cover, an upper end horizontal plate of the Z-shaped baffle is located above the upper end of the motor cover, and the horizontal size of the Z-shaped baffle is greater than or equal to the horizontal size of the motor cover; and the supporting framework at the back end of the Z-shaped baffle is provided with an internally visual closed body which is provided with the back end having a folding door, the supporting framework at the lower end of the closed body is provided with a running belt in the length direction of the closed body, and the width of the running belt is greater than or equal to the width of the closed body.

A sample solution introduction kit and a sample solution injector capable of introducing sample solution while reducing the rate of occurrence of an air bubble and having a simplified structure are proposed.

A sample solution introduction kit includes a plate-like member and a sample solution injector. The plate-like member has a plurality of spaces formed therein and serving as reaction field and a communication space that communicates with the plurality of spaces therein and that has a portion defining an opening formed in a surface of the plate-like member, and the sample solution injector includes a container containing the sample solution, a tube that communicates with the bottom of the container and that is insertable into the opening, a stopper removably fitted into an opening formed at a top end of the tube, and liquid held in the container, and the liquid is insoluble in the sample solution and is lighter than the sample solution.

The invention relates to an end face polishing and beveling machine of an optical element, relating to an end face polishing and beveling machine, which is simple in structure and is capable of obviously improving the work efficiency. The end face polishing and beveling machine is provided with a machine tool main body, a polishing device and a beveling device; the machine tool main body is provided with a frame seat, a guide rail, a guide rail sliding block, a limit arm, a gantry arm, a gantry arm sliding block, a first electric motor, a first belt wheel pair, a grinding disc, a guide plate, a flow-limiting ring and an operation panel; the polishing device is provided with a supporting rack, a hand wheel, a lifting screw rod, a main shaft, a main screw rod, side screw rods, an end face clamping plate, side clamping plates, a second belt wheel pair and a second electric motor; and the beveling device is provided with a bottom board, a spring, a workpiece rack, a pawl and ratchet wheel mechanism, an eccentric wheel, side pressure plates and a top pressure plate.

The invention relates to a reduction gear and a control method thereof. The reduction gear comprises a servo motor and a reducing mechanism connected with the servo motor, the reducing mechanism comprises a driving part and a driven part mutually matched, and the servo motor is connected with the driving part through a coupler. The driving part and the driven part are matched to input the power of the servo motor and output the power after reduction. An input shaft of the servo motor and an output shaft of the reducing mechanism are respectively provided with a first detecting device and a second detecting device, the first detecting device and the second detecting device input signals to a servo controller, the servo controller controls the servo motor to drive the reducing mechanism so as to input the power of the servo motor and output the power after reduction. The reduction gear has low cost, high control precision and quick response; the torque and the rotating speed are controllable; networked and integrated control is conveniently realized; and instructions of a main controller can be received, and the operation of a mechanical arm is controlled in a closed loop mode.

The invention discloses a permanent magnet speed regulator. The permanent magnet speed regulator comprises a barrel-shaped conductor rotor, a permanent magnet rotor and a magnetic conductive yoke which are coaxially arranged, wherein the permanent magnet rotor is positioned in an inner cavity of the conductor rotor; a radial air gap is formed between the permanent magnet rotor and the conductor rotor; the magnetic conductive yoke is positioned at the outer side of the permanent magnet rotor and can axially move; the magnetic field strength of the radial air gap can be adjusted by adjusting the distance from the magnetic conductive yoke to the permanent magnet rotor. According to the permanent magnet speed regulator, the magnetic conductive yoke can be moved to adjust the torque and the rotating speed; the required axial space is greatly reduced by being compared with the traditional barrel-shaped permanent magnet speed regulator; in addition, the magnetic flux of the radial air gap can be adjusted through the magnetic conductive yoke with small effect force; the problems of large axial space, complex speed regulating mechanism and large acting force of the traditional barrel-shaped permanent magnet speed regulator can be solved.

The invention discloses a disk-type permanent magnetic speed regulator. The disk-type permanent magnetic speed regulator comprises a first shaft and a second shaft which are coaxially arranged in a split mode. The end of the first shaft is connected with sliding blocks and conductor disks through a speed regulation mechanism. The conductor disks are made of materials with good conductivity. The end of the second shaft is connected with a permanent magnetic rotary disk through a load connecting disk. Permanent magnets are mounted on the permanent magnetic rotary disk and are arranged between the conductor disks. According to the disk-type permanent magnetic speed regulator, the structure of a permanent magnetic rotor is simplified, and the disk-type permanent magnetic speed regulator is only provided with one permanent magnetic rotary disk, so that the weight of the permanent magnetic rotor is greatly reduced on the basis of achieving air gap regulation, and the permanent magnetic rotor is more stable in the rotating process; consequently, mechanical friction and mechanical abrasion are reduced, interference of vibration is avoided, loss of transmission components is reduced, vibration is isolated, and noise is lowered; meanwhile, the disk-type permanent magnetic speed regulator is easy to install and debug, free of precise centering, capable of allowing a certain axial movement, and capable of changing output rotating speed and achieving the purposes of speed regulation and energy conservation through the design of two kinds of speed regulation mechanisms, and the size of air gaps can be controlled more accurately.

The invention relates to a hemodialysis system. In the hemodialysis system, a water supply end joint is connected with a liquid inlet joint of a water inlet pot, and a liquid outlet joint of the water inlet pot is connected with an inlet of a throttling member; the outlet of the throttling member is connected with the inlet of a first gear pump, the outlet of the first gear pump is connected with a heater in series and then connected with a liquid inlet joint of a separation pot, and a first liquid outlet joint of the separation pot is connected with a backflow joint of the water inlet pot; a second liquid outlet joint of the separation pot is connected with a first end of a first three-way pipe, and a second end of the first three-way pipe is connected with a concentrated solution pump A in series and then connected with a concentrated solution joint A; a third end of the first three-way pipe is connected with a first end of a second three-way pipe; a second end of the second three-way pipe is connected with a concentrated solution pump B in series and then connected with a concentrated solution joint B; and a third end of the second three-way pipe is connected with an electrical conductance monitor in series and then connected with a dialysate inlet joint of a capacity balancing and ultrafiltering device. In the hemodialysis system, the rotating speed of the gear pump is easy to control, and the operation noise is lower; the waterway operation pressure of the whole system is lower; and the service life of waterway parts is longer.

The invention relates to the technical field of coatings and particularly relates to an elastic-feeling coating. Ultraviolet (UV) light-cured elastic-feeling paper gloss oil is composed of the following components in parts by weight: 18-22 parts of UV elastic resin, 22-28 parts of monomer, 8-12 parts of active amine, 3-7 parts of photoinitiator, 5-10 parts of elastic powder, 3-7 parts of gas phase silica matting powder, 0.5-2 parts of assistant and 22-26 parts of solvent, wherein the monomer is a mixture of isobornyl acrylate and 1,6-hexanediol diacrylate. The ultraviolet light-cured elastic-feeling paper gloss oil provided by the invention is suitable for high-speed roller coating, thereby improving the working efficiency, reducing the coating operation difficulty and avoiding personal injury.

The invention relates to a centrifugal gas way type gas purifier which comprises a gas and spray mixing device, a purifier shell, a centrifugal rotor and a power device. The gas and spray mixing device is used for mixing gas with spray, the centrifugal rotor used for adsorbing suspended particles in the gas is mounted in the purifier shell, a plurality of centrifugal gas ways for gas flow to flow unidirectionally are arranged in the centrifugal rotor, the power device is in transmission connection with the centrifugal rotor to drive the same to rotate, and a gas inlet of the centrifugal rotor is connected with a gas outlet of the gas and spray mixing device. The gas and spray mixing device mixes the gas with the spray and provides power to feed mixed gas to the centrifugal gas ways, the centrifugal rotor driven by the power device rotates at a high speed, and the suspended particles in the mixed gas entering the centrifugal gas ways are adhered on the inner walls of the centrifugal gas ways under action of centrifugal force, so that the suspended particles and harmful gas in the gas are removed circularly to achieve the objective of efficiently purifying the gas.

A rotary feeding device of a sinter cooling furnace relates to the sinter cooling and waste-heat utilization field. The feeding device is arranged at a furnace opening of the cooling furnace; a transmission device comprises a motor, a rotary shaft, a driving gear, driven gears, a transmission shaft, protective covers and a supporting frame; the feeding device comprises a feeding cover, a feeding hole, a screw feeder, a discharging hole and a cone-shaped charging bell; the motor is connected with one end of the rotary shaft; the other end of the rotary shaft is connected with the driving gear; the driving gear and the driven gears which are arranged on the periphery of the transmission shaft are meshed with each other; the protective covers are externally arranged on the driving gear, the transmission shaft and the driven gears; the supporting frame which is fixed on the feeding cover is arranged below the protective covers; the feeding cover is coated outside the furnace opening of the cooling furnace; the transmission shaft penetrates through the feeding cover to be connected with the screw feeder; the feeding hole is formed on the lateral portion of the feeding cover; the discharging hole is formed at the bottom of the feeding cover; and the cone-shaped feeding bell is arranged under the feeding cover. The rotary feeding device of the sinter cooling furnace has the advantages of being convenient to use and capable of providing materials for the sinter, enabling the distribution of the sinter to be uniform and being good in sealing performance.

The invention provides a gelatinizing and pressing-fit device for a plate, and belongs to the technical field of plate processing. The gelatinizing and pressing-fit device comprises a pressing-fit mechanism, a gelatinizing mechanism and a glue liquid control mechanism. A gelatinizing support of the gelatinizing mechanism is arranged on a guide rail in a left-right sliding manner, and a gelatinizing roll is rotationally arranged between two gelatinizing roll supporting plates. A first lead screw and a first lead screw nut are in threaded connection, and a second lead screw and a second lead screw nut are in threaded connection. The pressing-fit mechanism is arranged over the gelatinizing mechanism, and first sliding sleeve plate, a second sliding sleeve plate and a third sliding sleeve plate of the pressing-fit mechanism are arranged from top to bottom and arranged on a pressing rod in a vertical sliding manner. The rigidity of a first spring is smaller than that of a second spring, andthe rigidity of the second spring is smaller than that of a third spring. The gelatinizing and pressing-fit device is fast and even in gelatinizing, pressing-fit force changes can be divided into three stages, the pressing-fit force is in a gradually increasing broken line type, the pressing-fit force stability is good, and the gelatinizing and pressing-fit effect of the plate is greatly improved.

The invention relates to an overspeed detection hyperspectral imaging technique, and provides a Fourier transform hyperspectral imaging device based on a high-speed double reflection rotating mirror to solve the problem of nonlinearity caused by an optical path difference of a high-speed rotating mirror transmission type interference spectrometer. The device comprises a collimating mirror, a beamsplitting mirror, a first reflecting mirror, a second reflecting mirror, a first hollow retro-reflector, a second hollow retro-reflector, a detector and the double reflection rotating mirror. Incidentlight is incident on a beam splitter and is divided into reflected light and transmitted light. The reflected light enters the first hollow retro-reflector after being reflected by the first reflecting mirror and the double reflection rotating mirror. Then the reflected light returns back to the double reflection rotating mirror at 180 degrees, and is then reflected to the beam splitter by the double reflection rotating mirror and the first reflecting mirror. The transmitted light enters the second hollow retro-reflector after being reflected by the second reflecting mirror and the double reflection rotating mirror. Then the reflected light returns back to the double reflection rotating mirror at 180 degrees, and is then reflected to the beam splitter by the double reflection rotating mirror and the second reflecting mirror. The interference light generated by the reflected light and the transmitted light is received by the detector.