14results about How to "Accurate speed" patented technology

This utility model relates to the field of lifting equipment technology, specifically disclosing a lifting device with a chain transmission mechanism. The inner walls of the frame are vertically provided with guide rail grooves. Upper and lower rotating shafts are rotatably installed between the top and bottom walls of the frame, with upper and lower sprockets fixedly fitted near their respective ends. The lifting platform includes a lifting frame, guide wheels rotatably installed on the top and bottom of the two side walls of the lifting frame and rolling along the guide rail grooves, adjusting pulleys slidably engaged with the top and bottom ends of the two side walls of the lifting frame in a horizontal direction, and tensioning screws for adjusting the horizontal position of the adjusting pulleys. The outer end of the adjusting pulleys is provided with rollers that roll vertically along the inner wall of the guide rail groove. Chains are connected between the top and bottom ends of the two side walls of the lifting frame, with the top and bottom of the chains passing over the upper and lower sprockets respectively. A power component for driving the upper rotating shaft is provided at the top of the frame. This design effectively solves the problems of unstable movement and inconvenient leveling of the lifting platform in lifting equipment.

The invention belongs to the technical field of printing equipment, and particularly relates to ink-jet printing equipment which is characterized in that the ink-jet printing equipment comprises a stretching mechanism, a plurality of vertical frames are fixedly arranged at the bottom of the stretching mechanism, and the stretching mechanism is used for tensioning and stretching a printing stock for ink-jet printing; and the driving mechanisms are arranged on the two sides of the stretching mechanism, and the driving mechanisms are used for providing power for the action of the stretching mechanism and conveying, pressing and positioning the printing stock. The weights of structures such as side rod blocks are vertically downward, so that the surfaces of the deflection cylinders extrude a printing stock to be tensioned, the tension of a plurality of tension springs acts on a surrounding cylinder to drive the structures such as two groups of middle rods, the deflection cylinders, an inner surrounding disc and an outer surrounding disc to rotate by taking the axial direction of the middle rods as the center, the printing stock is tensioned on the surfaces of the four deflection cylinders, and the printing stock is tensioned on the surfaces of the four deflection cylinders. And the printing stock is tensioned through triple tension generated by multiple structures, so that the advantage of clear printing is achieved.

The invention discloses an electric control system and method for a belt elevator of a gantry crane, and belongs to the technical field of control over the belt elevator of the gantry crane. The electric control system of the belt elevator of the gantry crane comprises the belt elevator, an operation input unit, a PLC (Programmable Logic Controller) control unit, a safety monitoring unit, an execution indication unit and a variable frequency driving unit. The invention provides an electric control system and method for a belt elevator of a gantry crane, which are high in integration level, intelligent and reliable, can cooperate with the gantry crane to work, can realize full-automatic, continuous and efficient conveying of materials from the gantry crane to a storage yard, fundamentally replaces vehicle transfer, and improves the working efficiency. The system has complete safety protection and intelligent fault diagnosis functions, and aims to improve the operation efficiency, reduce the operation cost and realize green and environment-friendly wharf operation.

The utility model relates to the technical field of black fungus bag production, and discloses a fungus bag opening sealing machine which comprises a connecting frame and a bearing frame, the top of the bearing frame is fixedly connected with a fungus bag clamping groove, an opening sealing speed regulating motor is fixedly connected in the connecting frame, the driving end of the opening sealing speed regulating motor is fixedly connected with a first opening sealing shaft rod, and the driving end of the first opening sealing shaft rod is fixedly connected with a second opening sealing shaft rod. The top of the first nest opening shaft rod is fixedly connected with a nest opening shaft rod stroke fixing plate, the inner portion of the nest opening shaft rod stroke fixing plate is fixedly connected with an inserting rod shaft rod, the top of the bearing frame is fixedly connected with an inverted floating material stroke module, and the outer portion of the inverted floating material stroke module is fixedly connected with an inverted floating material stroke sliding table. According to the utility model, flexible clamping and quantitative rotating tightening are realized by the six-claw opening folding claws, the opening folding forming precision of fungus bags is ensured, opening folding-rod insertion-flattening is realized, and the effects of full-flow intelligent upgrading, higher speed, higher accuracy and lower failure rate of fungus bag bagging operation are realized by three-station parallel line production.

This application provides a charging device, a charging cloud platform, and a charging system. The charging device includes a temperature controller and a temperature sensor. The temperature sensor detects the temperature of the charging device, and the temperature controller adjusts the temperature of the charging device. The charging device is used to: transmit temperature control data during the output of DC power, including the temperature from the temperature sensor and the corresponding rotational speed of the temperature controller; receive an empirical temperature control curve, which is a curve showing the relationship between the temperature of the charging device and the rotational speed of the temperature controller. The empirical temperature control curve is fitted based on temperature control data from at least two charging devices, including the charging device itself and other charging devices besides the charging device; and control the rotational speed of the temperature controller based on the empirical temperature control curve and the temperature from the temperature sensor. The solution provided in this application can reduce the R&D investment in temperature control characteristics, thereby reducing economic and labor costs.

The utility model provides a kind of multi-unit moving coil motor, including at least two parallelly arranged substrates and the rotating shaft passing through the end surface of substrate, first coil winding and second coil winding are evenly arranged in the two end surfaces of substrate, first permanent magnet group and second permanent magnet group are arranged in the two end surfaces of substrate, first permanent magnet group and second permanent magnet group are all suspended outside first coil winding and second coil winding, fixed plate is arranged in the side of first permanent magnet group and second permanent magnet group away from substrate, first permanent magnet group and second permanent magnet group are all fixed on the fixed plate.The permanent magnet group of the application can form coverage to the deflection range of first coil winding and second coil winding, secondly, the magnet is arranged on both sides of coil in the application, compared with the magnet on one side, it has better magnetic field intensity.Finally, the application is arranged by parallelly arranging multiple substrates, compared with single substrate, it can provide stronger torsion to rotating shaft.

The utility model provides an improved moving coil type deflection motor, including base plate and pivot, first coil winding and second coil winding are all provided with in the both ends of base plate, first coil winding and second coil winding are symmetrical distribution to pivot, first permanent magnet group and second permanent magnet group are provided with respectively in the both ends of base plate, the polarity of the permanent magnet group all wraps two permanent magnet adjacent the permanent magnet, when first coil winding and second coil winding repeatedly deflect with pivot as the axis, first permanent magnet group and second permanent magnet group can form the coverage to the deflection range of first coil winding and second coil winding respectively. The application is through setting up magnet in coil winding both sides, makes the coil always to be under the even high intensity magnetic field coverage in whole movement range, has no magnetic field gradient interference, dynamic response is faster and more stable, to realize more accurate displacement and speed control, be more suitable for being applied to the precision instrument that needs high accuracy positioning.

The embodiment of the invention provides a vehicle control method and system, a vehicle and a storage medium, and the method comprises the steps: carrying out the non-inductive control of a motor, and determining the rotating speed of the motor; determining a reference rotational speed based on the wheel speed; and under the condition that the difference value between the motor rotating speed and the reference rotating speed is within a preset interval, motor output control is conducted on the vehicle based on the motor rotating speed. According to the embodiment of the invention, the initial rotating speed determined by the non-inductive control is coupled with the reference rotating speed determined based on the wheel speed, and the output of the non-inductive control is corrected, so that the control accuracy is ensured, and the safety of the vehicle is ensured.

The application discloses a handheld underwater detection device with adjustable direction propulsion and belongs to the technical field of underwater operation equipment. The existing handheld underwater detection device completely relies on manpower movement, and problems such as no power assistance, power and detection being unable to be coordinated exist. The application comprises a main body structure, a quick-release battery assembly, a sensing unit, an interactive display module and an underwater propulsion module. The main body structure comprises a main shell and a handheld ring connected with the main shell. The quick-release battery assembly is installed on the main body structure, provides power for the device and realizes quick release of the battery. The sensing unit comprises a detection imaging assembly and a multi-source fusion positioning navigation module. The interactive display module comprises a display screen and control buttons arranged on the top surface of the main body structure. The underwater propulsion module comprises an underwater steering engine fixed below the main body structure and an underwater propeller connected with the output end of the underwater steering engine, and the underwater steering engine is used for driving the underwater propeller to realize adjustable pitch angle. The application realizes adjustable direction autonomous propulsion of the handheld underwater detection device, integrates detection, navigation and power assistance into one, and is convenient for operation.

The application discloses a kind of adjustable orientation multi-channel plasma discharge device, it is related to multi-channel plasma discharge equipment technical field, including substrate frame, the substrate frame is equipped with discharge channel, the discharge channel is equipped with discharge device, the discharge channel one side is equipped with gas supply device, the gas supply device transports the gas to be ionized to the discharge device, the discharge device is used to ionize the gas provided by the gas supply device into plasma, the discharge channel is rotationally connected with plasma guide plate at the end away from the gas supply device, the plasma guide plate is used to guide the plasma that flows out from the discharge channel.The application can adjust the delivery angle of the plasma that flows out from discharge channel, so as to meet the diversified angle requirement of plasma.

The utility model provides a moving -coil type deflection motor, including base plate and pivot, first coil winding and second coil winding are all provided with in the both end faces of base plate, first coil winding and second coil winding are symmetrical distribution to pivot, first permanent magnet group and second permanent magnet group of polarity opposite are provided with respectively in the both end faces of base plate, above -mentioned two respectively hang in first coil winding and second coil winding outside, when first coil winding and second coil winding repeatedly deflect with pivot as the axle, first permanent magnet group and second permanent magnet group can form the coverage to the deflection range of first coil winding and second coil winding respectively. The present application is through setting up magnet in coil winding both sides, makes the coil always be under the uniform high -intensity magnetic field coverage in whole movement range, has no magnetic field gradient interference, dynamic response is faster and more stable, can realize more accurate displacement and speed control, is more suitable for being applied to the precision instrument of need high accuracy positioning.

The present application relates to permanent magnet synchronous motor control technology field, specifically relates to a kind of polynomial saturation function sliding mode observer PMSM sensorless control method and system, including establishing motor voltage equation and current state equation, construct the sliding mode observer using fast terminal hyper spiral control law, the control law includes proportional term, integral term and the linear term related to sliding surface.Then design polynomial saturation function, it is continuous smooth cubic polynomial in boundary layer, it is sign function outside boundary layer.Polynomial saturation function is substituted into observer control law, replaces sign switching function, estimates back electromotive force using observer, integral term in control law directly outputs back electromotive force estimation value, without low-pass filter.Finally, through heterodyne method according to back electromotive force, rotor position and speed are calculated, sensorless closed-loop control is realized.The present application effectively suppresses chattering, avoids phase delay, improves estimation accuracy, and is suitable for new energy vehicles and industrial robot driving system.

The utility model discloses a grinding machine Z-axis ram for servo control of tailstock movement, and relates to the technical field of precision grinding machine structural design, the grinding machine Z-axis ram comprises a Z-axis ram, a C-axis turntable is arranged on the left side of the Z-axis ram, the C-axis turntable is detachably connected with the left side of the Z-axis ram through a screw, a tailstock body is arranged on the right side of the Z-axis ram, and the tailstock body is detachably connected with the right side of the Z-axis ram through a screw. A tailstock linear guide rail is arranged between the tailstock body and the side wall of the Z-axis ram, and the tailstock body and the Z-axis ram are restrained through the arranged tailstock linear guide rail. According to the Z-axis ram of the grinding machine capable of controlling the tailstock to move in the servo mode, the Z-axis ram and the tailstock are driven in the mode that the ball screw is matched with the servo motor, accurate rotating speed and position control can be achieved through the servo motor, motion errors and vibration are effectively reduced, and machining efficiency is improved; and the linear guide rail is used for providing stable support and guidance for the movement of the ram and the tailstock, so that the stability and the reliability of the movement are enhanced.

The utility model provides a kind of milk warmer with milk powder dissolving function, for heating liquid in container and auxiliary dissolution powder therein, this milk warmer with milk powder dissolving function is equipped with ultrasonic dissolution component and immersion heating component, the ultrasonic dissolution component is used to generate high-frequency vibration and transmit it to the container to assist in dissolving the powder, the immersion heating component has the heating element component and / or temperature sensor capable of being immersed in the liquid in the container, the heating element component is used to directly heat the liquid, and the temperature sensor is used to measure the temperature of the liquid. The utility model effectively solves the technical problems of separation of milk powder dissolution and milk warming function in the prior art, and the device structure is complex, the noise is large and the compatibility is poor caused by the mechanical shaking method to dissolve milk powder, and at the same time, the technical problems of low efficiency and inaccurate liquid heating temperature in the prior art are solved.