38results about How to "Precise control of rotation speed" patented technology

The invention provides a synchronous online symmetric stretching device. The synchronous online symmetric stretching device comprises a symmetric stretching mechanism, a transmission mechanism, a supporting frame and a programmable logic controller, wherein the symmetric stretching mechanism is mounted in the supporting frame, one end of the symmetric stretching mechanism is connected with the transmission mechanism, and the transmission mechanism is connected with the programmable logic controller. The symmetric stretching mechanism comprises two screw-nut pairs, sliders and press plates, the screw-nut pairs are mounted on one side in the supporting frame, each screw-nut pair comprises a screw with two threads opposite in screwing direction and two nuts fittingly in sleeving joint with the two threads, and the ends, on the same side, of the screws pass through the supporting frame to be positioned on the outer side thereof. The synchronous online symmetric stretching device can be disposed in a specific test instrument (such as an x-ray diffractometer and raman spectrometer) and is capable of achieving synchronous online symmetric stretching strictly so as to improve accuracy of detection results.

The invention discloses a multifunctional snow removal vehicle with an electric-door-type transmission function. The multifunctional snow removal vehicle comprises a door-type carrying chassis, lifting devices and a snow removal roller; the middle of the door-type carrying chassis is arched, and the two ends of the door-type carrying chassis are of a flat structure; the lifting devices are symmetrically arranged at the two sides of the middle of the door-type carrying chassis; the two ends of the snow removal roller are connected with the lifting devices; each lifting device comprises a firsthinge support base, a second hinge support base, a first connecting frame rod, a second connecting frame rod, a connecting rod and a lifting hydraulic cylinder; each first hinge support base and the corresponding second hinge support base are symmetrically hinged to the two arched ends of one side of the door-type carrying chassis; one end of each first connecting frame rod and one end of the corresponding second connecting frame rod are hinged to the corresponding first hinge support base and the corresponding second hinge support base respectively; one end of each connecting rod is hinged tothe other end of the corresponding first connecting frame rod; one end of each lifting hydraulic cylinder is hinged to the other end of the corresponding second connecting frame rod, and the other end of each lifting hydraulic cylinder is hinged to the other end of the corresponding connecting rod. The invention further provides a control method of the multifunctional snow removal vehicle with the electric-door-type transmission function. The rotation speed of the snow removal roller can be accurately controlled according to specific road conditions and environments, and the snow removal efficiency is improved.

The invention discloses a single-welding-gun intelligent welding system for multi-purpose welding and a control method, relates to the technical field of welding machines, and aims to solve the problems that in the prior art, a single-welding-gun automatic welder is not high in intelligent degree, does not have an electric-arc tracking technology, and cannot guarantee high quality and high reliability of welding. The single-welding-gun intelligent welding system comprises a welding trolley, a welding power supply, a power supply adapter, a wireless remote controller, an earth clamp, a protective gas supply system, a travelling rail, a wire feeding box and a controller. The single-welding-gun intelligent welding system has the advantages of achieving fully-automatic welding integrated withan electric-arc tracking technology, achieving multiple purposes, being suitable for welding of different workpieces, and being high in welding quality.

The invention provides an automatic aperture driving circuit and an electronic device. The automatic aperture driving circuit comprises a front-end processor, a first digital-to-analog conversion module, a first comparison module, a second digital-to-analog conversion module and a second comparison module, the first digital-to-analog conversion module receives the first digital code from the front-end processor and generates a first analog voltage, the non-inverting input end of the first comparison module receives the first analog voltage output by the first digital-to-analog conversion module, the inverting input end of the first comparison module receives the reference voltage value, the first comparison module compares the first analog voltage with the reference voltage value to control the aperture change speed, the second digital-to-analog conversion module receives the second digital code from the front-end processor and generates a second analog voltage, and the second comparison module compares the second analog voltage with the feedback voltage fed back by the second comparison module to control the opening size of the aperture. The circuit of the present invention can precisely control the opening size of the aperture and the aperture rotation speed.

The invention relates to a bottom driving mechanism of an oxygen inclined blown rotating converter, which comprises a transmission shaft, a pocket beam and a connecting shaft. the bottom driving mechanism is characterized by further comprising a hydraulic motor and a crown gear coupling, wherein the transmission shaft penetrates through the pocket beam and is fixed onto the pocket beam, one end of the transmission shaft is connected with the hydraulic motor, the other end of the transmission shaft is connected with the crown gear coupling, the crown gear coupling is connected with a converter body by the connecting shaft, and the hydraulic motor is externally connected with a hydraulic station. The bottom driving mechanism is modified, accordingly, energy consumption is reduced, work efficiency is improved, the service life of a spare part (a rotating wheel) is prolonged, and the purpose of precisely controlling the rotation speed of the converter body is realized.

The invention relates to a dome camera high-precision tracking system and method based on a PID algorithm. The system comprises a dome camera, an algorithm server and a logic control server. The method comprises the steps that the algorithm server carries out intelligent analysis on real-time video data collected by the dome camera and gives out identification result information and auxiliary information of a moving target; the logic control server performs proportion, integration, differentiation and proportion adjustment according to the moving target identification result information and the auxiliary information, and sends a control instruction to the dome camera according to the adjustment result; and the dome camera controls the camera to rotate and/or focus according to the controlinstruction so as to realize high-precision tracking of the moving target. According to the ball machine high-precision tracking system and method based on the PID algorithm, based on the PID algorithm, precise control over the rotating speed of the ball machine is achieved, and therefore high-precision stable tracking of the ball machine on a moving target is achieved.

The invention belongs to the technical field of geotechnical engineering and particularly relates to a dish type solar heat collecting single pile for thermal desorption treatment of soil organic pollutants. The device is composed of a thermal desorption pile body, an escape pile body, a vehicle track racing with the sun, a vehicle racing with the sun, a controller, a dish type mirror and other components. Each thermal desorption pile device is equipped with two escape piles which can be arranged in a hexagonal plum-blossom-shaped combination manner. The local sun track parameters are input into the controller in advance, the controller controls the vehicle racing with the sun to move along the circular-arc-shaped track racing with the sun, and meanwhile a telescopic rod is controlled so that the dish type mirror can be always facing the sun. The heat collecting plate reflects sunlight onto a heat collector, and the heat collector transfers heat to the thermal desorption pile body after being heated, so that the soil is heated, and low-boiling-point organic matter in the soil is heated to escape through the escape piles. The device can utilize solar energy to treat the organic pollutions in the polluted soil by the thermal desorption method, can be arranged in combination and serve together and is a novel polluted soil treatment device.

The invention relates to a sprayer of a dish washing machine. The sprayer comprises a water pipe assembly, a main spraying arm rotatably connected to the water pipe assembly, one or more sub sprayingarms rotatably installed at the end of the main spraying arm and an annular slideway arranged at the lower side of the main spraying arm and slidingly matched with the sub spraying arms. When the mainspraying arm rotates, the sub spraying arms slides along the annular slideway, and under the limit of the annular slideway, the sub spraying arms rotate relative to the main spraying arm. The invention further relates to the dish washing machine provided with the sprayer. Through cooperation of the sub spraying arms and the annular slideway, the water spraying range of the main spraying arm is enlarged, the sprayer has the advantages of being large in spraying covering range and particularly suitable for a rectangular liner of the dish washing machine, the cleaning dead corner can be reduced,and the working efficiency of the dish washing machine is improved.

The invention discloses a hand-operated pulse school bus control system for a cold heading machine, which belongs to the field of machining equipment, and is used to reduce wear on a pneumatic clutch, reduce school bus noise, and increase school bus precision. The control equipment includes a frequency converter, the hand-operated encoder is connected with the frequency converter, the control equipment is connected with the main motor, the main motor is connected with the flywheel through a belt, the flywheel is equipped with a pneumatic clutch, and the flywheel is connected with the main drive crankshaft through the pneumatic clutch. The main transmission crankshaft is connected with a transmission mechanism, the transmission mechanism includes a main slide table, a mold is set on the main slide table, the operation of the main motor can drive the flywheel to run, and the pneumatic clutch set on the flywheel is connected with the main transmission crankshaft, and the pneumatic clutch can be in the position of the flywheel. There are two states of clutch, so as to control the motion state of the main drive crankshaft. The main drive crankshaft can drive the main slide table to move, and the main slide table and the molds set on it can be adjusted. Its main purpose is to carry out precise calibration of cold heading machines.

The invention discloses a novel electric injector. The novel electric injector comprises a shell, wherein a storage battery is fixedly connected to the left end of the bottom of an inner cavity of theshell, a voltage stabilizer is fixedly connected to the right end of the bottom of the inner cavity of the shell, a partition plate is fixedly connected to the lower end of the inner cavity of the shell, a liquid medicine box is fixedly connected to the top of the partition plate, and a stepping motor is fixedly mounted at the lower end of the left side of the liquid medicine box; and a peristaltic pump is connected to the driving end of the stepping motor, and a liquid medicine output hole is formed in the left side of the shell and located in the top of the partition plate. The stepping motor is driven by the storage battery, the output dosage and pressure of liquid are controlled by controlling the number of turns and the speed of the peristaltic pump driven by the stepping motor, andunder the condition that a special injection handle, a needle head and a needle head box are matched, one-man rapid batch injection operation can be achieved. The problem that an existing intensive farm needs frequent treatment and immunization is solved, and the effects of being easy to operate, saving time and labor, improving operation efficiency and reducing labor cost are achieved.