145 results about "Slow speed" patented technology

The invention discloses a multi-valve cooperative control system and method for a choke manifold control box, and the method comprises the steps: collecting process parameters and valve state parameters in real time through a data collection module, calculating the required total throttling pressure drop or total flow through a data analysis module based on the target bottom hole pressure or target flow set by an operator in combination with real-time data, and calculating the total throttling pressure drop or total flow according to the calculated total throttling pressure drop or total flow; the valve role distribution module distributes valve roles according to a preset rule, the instruction generation module distributes total demands to all valves according to a proportion to generate a target opening instruction set, the instruction verification module verifies instruction safety through a safety interlocking matrix, and the valve driving module executes the instruction passing verification. The feedback optimization module calculates the correction based on the actual parameter deviation and performs iterative optimization; the problems of insufficient precision, low response speed and poor safety in multi-valve cooperative control are solved, the precision and reliability of throttling control are improved, valve abrasion is reduced, and the system anti-jamming capability and fault emergency response efficiency during sudden change of working conditions are enhanced.

The utility model discloses a motor rotating speed adjusting structure of an ice cream machine, which belongs to the technical field of ice cream machines and comprises a compressor, an evaporator, a stirrer, a motor, a control panel and a display panel. The control panel is in electric control connection with the compressor, the motor and the display panel, an adjustable direct-current voltage circuit is arranged on the control panel, different voltage signals are output through the adjustable direct-current voltage circuit, and the motor is controlled to output different rotating speeds through the different voltage signals. According to the structure, the motor can at least rotate at a high speed and a low speed, so that the stirrer can stir ice cream at least at a high rotating speed and a low rotating speed, the stirring speed of the ice cream can be increased by the stirrer rotating at a high speed, the discharging speed of the ice cream can be reduced by the stirrer rotating at a low speed, and the use experience of a user is greatly improved.

The invention provides a crown block control method and a related device, and the method comprises the following steps: in response to a material grabbing instruction, controlling a lifting assembly to drive a clamping assembly to descend at a first speed; when the descending distance of the clamping assembly reaches a first preset distance, the lifting assembly is controlled to drive the clamping assembly to descend at a second speed, and the second speed is smaller than the first speed; in the descending process of the clamping assembly, a detection result is determined according to a detection signal of the detection assembly; when the detection result is the first detection result, the clamping assembly is controlled to be closed; and the lifting assembly is controlled to drive the clamping assembly and the material carrier to ascend to the initial position. In this way, the clamping assembly is controlled to descend at a high speed at the stage far away from the material carrier, the clamping assembly is controlled to descend at a low speed at the stage close to the material carrier, collision or virtual grabbing caused by too high speed is avoided, the situation that the grabbing efficiency is reduced due to too low speed is avoided, and compared with the prior art, the grabbing efficiency and the grabbing precision can be both considered.

Embodiments of the present application disclose an intelligent electric power tool and a control method thereof. The intelligent electric power tool comprises: a motor; a power switch, which outputs a switch signal to control the power-on state of the motor; a detection unit, which is configured to detect the running parameters of the motor in real time; and a controller, which is electrically connected to at least the motor and the detection unit. The controller is configured to: when a power-off signal of the power switch is detected, acquire the running parameters of the motor; set the brake time of the intelligent electric power tool according to the running parameters, and control the motor to reduce the rotating speed within the brake time in response to the power-off signal. The intelligent electric power tool can solve the problems of the prior art, such as long brake time, slow start response speed and poor brake stability in the process of frequent on-off, so that the brake time of the intelligent electric power tool is automatically adjusted according to the real-time running parameters of the motor during the working process, the fast start is realized while the brake stability is ensured, the response speed of the intelligent electric power tool in the process of frequent on-off is improved, and the working efficiency is improved.

A numerical control device (1) has a rotation command output section (13) that outputs a rotation command that causes a workpiece and a tool to rotate relative to each other, and a feed command output section (12) that outputs a feed command that causes the workpiece and the tool to move relative to each other, the feed command being able to include a vibration motion command that alternately repeats an advancing motion and a retreating motion. In one vibration in the vibration motion command, a first section in which movement is performed at a first speed that is a moving speed at the time of the advancing motion, a second section in which movement is performed at a second speed that is a moving speed at the time of the retreating motion, and a third section in which movement is performed at a third speed that is slower than the first speed and is a moving speed at the time of the advancing motion are included.

The invention relates to a new energy elevator energy saving method which comprises the following steps that detection logic of an elevator system is decentralized from a main control board to all functional parts, and the functional parts send preparation signals to the main control board after completing self detection so as to improve the elevator response speed; controlling the elevator system to enter a first energy-saving mode or a second energy-saving mode according to the running stopping duration of the elevator or a preset time period; and when the elevator system receives an awakening instruction or quits the second energy-saving mode when quit time is up, the main control board quickly recovers operation of the elevator system by confirming preparation signals sent by all the functional components. The detection logic of the elevator system is decentralized from the main control board to each functional part, so that a parallel processing mode that the functional parts actively send preparation signals to the main control board after self-inspection is completed is realized, and the first energy-saving mode or the second energy-saving mode is flexibly switched by combining the running stopping duration time or the preset time period of the elevator; the problem that the awakening response speed of the elevator is low after deep energy saving is solved.

In automatic tuning of a servo amplifier for servo control of a motor, the automatic tuning can be performed regardless of the size of a load connected to the motor, and control parameters of a position command filter can also be optimized. Before tuning of a gain of the servo amplifier is performed, the following processes are executed: a process (103) of estimating an inertia ratio related to the motor, based on a response of the motor when the motor is driven at a speed slower than a speed used at the time of the gain tuning; and an initial value decision process (104) of deciding initial values of the control parameters of the position command filter at the time of the automatic tuning, based on the inertia ratio.

The utility model relates to the field of shaking-up equipment, in particular to a shaking-up device, which comprises a tensioning clamp, a shaking-up device and a shaking-up device, the driving mechanism comprises a power source; the power source is in indirect transmission connection with the inner rotating shaft to drive the inner rotating shaft to rotate in the circumferential direction; the inner rotating shaft is matched with the tensioning clamp to clamp the pipe body and drive the pipe body to rotate by 360 degrees on the vertical plane, and the pipe body is shaken up; the clutch ring comprises an outer rotating shaft and a clutch disc; the outer rotating shaft is sleeved on the inner rotating shaft, the outer rotating shaft is driven by a power source, and the inner rotating shaft and the tensioning clamp are driven by the clutch disc to switch between a tightening state and a loosening state; the locking mechanism is used for controlling the inner rotating shaft to be locked in the loosening state; and in the tightening state, the locking action is contacted, so that the shaking action is realized. By means of the structure, 360-degree continuous rotation of the tube body on the vertical plane can be effectively achieved, and the problems that an existing sample shaking-up device is small in swing amplitude, poor in shaking-up effect and low in shaking-up speed are solved.

This invention provides an integrated collaborative assembly system for new energy vehicle chassis. It cleverly utilizes the inherent speed difference between the fast and slow speed sections of the circular track to automatically drive the coupling part to complete the lifting and engaging actions through the inclined guiding action of the disengagement mechanism. This achieves fully automatic, powerless coupling and disengagement of the friction vehicle assembly, enabling seamless automated connection between vehicle units. Simultaneously, the circular track layout with fast and slow speed zones ensures stability and ample operating space during the assembly process in the slow section, while significantly reducing the turnover time of finished components and empty trolleys in the fast section. Furthermore, the floating structure design ensures sufficient positive pressure to transmit stable power while effectively buffering rigid collisions and vibrations during operation, significantly reducing the wear rate of the friction wheels, friction vehicle assembly, and track.

A power transmission device capable of rapidly switching output ends belongs to the field of power transmission technology. The device includes a motor as a power input, a reducer, a shift fork mechanism, and a power output mechanism. The motor is connected to the reducer, and the reducer is connected to the shift fork mechanism. In the power output mechanism, the shift fork mechanism drives the active synchronous pulley, and multiple driven synchronous pulleys are connected by a synchronous belt. Each driven synchronous pulley drives one output end. The active synchronous pulley selectively engages with different driven synchronous pulleys via the synchronous belt, enabling rapid switching of multiple output ends driven by a single motor. This invention solves the problems of slow output switching speed and complex operation in existing power transmission devices, and has advantages such as fast switching speed, simple operation, stable power transmission, and the ability to achieve one-drive-multiple-output.

The utility model discloses a slow descending device for no-load and heavy-load jacks. The slow descending device of the hydraulic system is simple in structure, convenient to use and low in manufacturing cost, can return slowly when a jacked heavy object is heavy, and can return quickly when the jacked heavy object is light. The hydraulic jack comprises a small oil cylinder, a large oil cylinder and an oil tank, the small oil cylinder is communicated with the oil tank through a one-way oil inlet valve, a one-way oil outlet valve is connected between the small oil cylinder and the large oil cylinder, and a piston rod for jacking a heavy object is installed in the large oil cylinder. Wherein the bottom of the base core is provided with an upward concave pit, a pressure spring is arranged between the pit and the oil cylinder base, an oil drainage gap A is arranged between the base core and the oil cylinder base, a plurality of oil drainage notches are arranged on the periphery of the bottom of the base core, an oil return pipeline is arranged on the large oil cylinder and is communicated with the pit on the base core, and an oil return valve is arranged on the oil return pipeline.

The utility model relates to the technical field of spring machining, in particular to a spring pitch adjusting device. The spring pitch adjusting device comprises a base, a fixed seat, an adjusting seat, a mounting seat, a threaded rod, a servo motor and the like, a fixing seat is arranged on the left side of the top of the base, fixing mechanisms are arranged in the fixing seat, a mounting seat is arranged on the right side of the top of the base, a threaded rod is arranged at the left end of the mounting seat, an adjusting seat is in threaded connection with the threaded rod, fixing mechanisms are arranged in the adjusting seat and the fixing seat, a servo motor is arranged on the right side of the mounting seat, and an output shaft of the servo motor is connected with the threaded rod. A control panel is arranged at the front end of the mounting seat. Due to the design of the control panel, the servo motor and the fixing mechanism, the distance adjusting operation can be completed without manual intervention, and the problems of low speed, low efficiency and high labor intensity in the manual adjusting process are solved.

This invention discloses a hopper scale calibration control method and system, relating to the field of metrological calibration technology. The method includes: acquiring a target calibration load value; controlling a first loader and a second loader to synchronously apply tension; executing a multi-level speed control step, switching the loading speed from high speed to medium speed, low speed, or slow speed based on the difference between the current total tension value and the target value; executing a synchronous difference control step, calculating the tension difference between the two loaders in real time, and pausing the loader with the larger force value when the difference exceeds a preset threshold until the difference recovers. This invention also provides a hopper scale calibration system that executes the above method. This invention achieves a balance between accuracy and efficiency through multi-level speed control and solves the problem of uneven loading at two points through synchronous difference control, offering advantages such as high calibration accuracy, good loading synchronization, convenient operation, and high safety.

The utility model discloses a cheese stirring tank for cheese production, belongs to the technical field of cheese production, and aims to solve the problems of low cheese taking speed and low cheese taking efficiency due to lack of a mechanism for quickly taking out congealed milk blocks in the prior art. Comprising a groove body, clamping grooves are formed in the middles of the side walls of the two ends in the groove body, a collecting assembly is clamped in the clamping grooves in a sliding mode, a supporting frame is installed on the upper surface of the groove body and is L-shaped, an electric telescopic rod fixedly penetrates through the upper end of the supporting frame, and a lifting plate is installed at the lower end of the electric telescopic rod. According to the cheese stirring groove for cheese production, by arranging the collecting assembly, the function of rapidly taking out congealed milk blocks is achieved, the cheese taking speed is high, the cheese taking efficiency is high, the production efficiency is improved, by arranging an electric telescopic rod and a lifting plate, vertical movement of a motor, a stirring plate, a vertical rod and a fixing ring is facilitated, and it is prevented that when the milk blocks are taken out, the milk blocks cannot be easily taken out. The motor, the stirring plate, the vertical rod and the fixing ring influence taking out.

This utility model discloses a mixing device for soft ceramic raw materials, relating to the field of mixing devices. It includes a base plate, with a mounting bracket for fixing a container installed at the front end of the base plate. An upwardly protruding support rod is welded to the top of the base plate, and a mounting box is installed on the top of the support rod. A first drive mechanism and a second drive mechanism are installed inside the mounting box. A stirring mechanism extending to the center of the container's inner cavity is installed at the output end of the first drive mechanism, and a crushing mechanism extending to an eccentric position within the container's inner cavity is installed at the output end of the second drive mechanism. This utility model, by setting up a first drive mechanism and a second drive mechanism, synchronously drives the stirring mechanism and the crushing mechanism to rotate, with one rotating at a slower speed and the other at a faster speed. This allows for further crushing of the raw materials being mixed, ensuring the uniformity of the mixture.

This invention relates to the field of asynchronous motor control technology, specifically to an asynchronous motor speed control method and system based on an improved Super-Twisting sliding mode algorithm. The method includes: (1) deriving the fourth-order nonlinear differential equation of a three-phase squirrel-cage asynchronous motor in a rotating coordinate system d-q based on rotor magnetic field orientation theory; (2) designing a linear sliding surface based on the error between the set speed and the feedback speed; (3) using the first-order differential equation of rotor speed in step (1) and the linear sliding surface described in step (2), and introducing a variable proportional differential term based on the traditional Super-Twisting sliding mode algorithm to design a fast Super-Twisting sliding mode speed controller; (4) constructing a variable exponential switching function to replace the sign function in the fast Super-Twisting sliding mode speed controller described in step (3), thus completing the design of the improved Super-Twisting sliding mode speed controller. This solution effectively solves the problems of slow response speed and poor control accuracy in existing systems, thereby improving the overall robustness of asynchronous motor control.

The invention discloses a laboratory composite material processing and mixing device, and belongs to the technical field of composite material mixing, the laboratory composite material processing and mixing device comprises a stirring tank, a base and a stirring mechanism, a mounting groove is formed in the bottom of the base, the stirring mechanism comprises a driving part, a stirring shaft and stirring blades, the stirring shaft penetrates through the base and extends into the stirring tank, and the stirring blades are arranged in the mounting groove. The stirring shaft is installed on the stirring tank in a rotating mode, the stirring blades are fixedly installed on the stirring shaft, and the driving part is installed on an installation groove in the base and used for driving the stirring shaft to alternately rotate clockwise and anticlockwise. The driving piece provides clockwise and anticlockwise alternate and differential rotation power for the stirring shaft, the stirring blades are driven to achieve multi-dimensional movement modes such as forward and reverse rotation switching and fast and slow speed differential, a complex turbulent flow field formed by interweaving and overlapping in the tangential direction, the radial direction and the axial direction is built in the tank, shearing, collision, diffusion and convection among materials are strengthened, and the stirring effect is improved. And the materials in the tank can be efficiently homogenized and mixed.

The application provides a multi-source cooperative AGC frequency modulation control method based on multi-level control, belongs to the technical field of power systems, and is an AGC hierarchical control method according to unit performance. The method classifies units into fast area units, medium speed area units and slow speed area units according to performance, distributes the control signals of the AGC to the units in each area through filtering processing, and fully considers the battery charging and discharging states of energy storage power stations. Through multi-level cooperative control, the frequency modulation resources are fully utilized, the comprehensive frequency modulation effect is improved, and the economic benefit is improved. The application can solve the problems of unclear function positioning of various frequency modulation resources, insufficient resource utilization, and series problems such as squeezing of frequency modulation resources, unreasonable calling, and inability to fully play a role in the current frequency modulation auxiliary service, can effectively improve the comprehensive frequency modulation effect, and thus improve the economic benefit.

This utility model discloses a conveying assembly for double-layer sheet material, a reversing device for packaging bags, and a bag-making device, including a first conveying component and a second conveying component. The first conveying component has a first arc-shaped segment, and the second conveying component has a second arc-shaped segment. The first arc-shaped segment is located radially inner to the arc-shaped channel, and the first conveying speed of the first arc-shaped segment is less than the second conveying speed of the second arc-shaped segment. Because the first conveying speed of the first arc-shaped segment is less than the second conveying speed of the second arc-shaped segment, the outermost sheet material layer is conveyed at a faster speed, while the innermost sheet material layer is conveyed at a slower speed. The extra travel distance of the outermost sheet material layer is compensated by the faster conveying speed, allowing the double-layer sheet material to maintain synchronous movement during the arc-shaped conveying process. When applied to bag-making equipment, this avoids the problem of packaging bags being stretched and deformed.

The usage rate of a controller storage buffer (CMB) is increasing. The host device typically places a submit queue (SQ) in the CMB to utilize the memory provided by the data storage device. The host device will place an entry in the SQ and knock a doorbell associated with the SQ. When the doorbell rings, the controller checks the SQ. However, even if the doorbell knocks, data may not be in the SQ due to the slower speed of accessing the CMB. To ensure that the data has been in the SQ, the controller may use two doorbells: one is knocked by the host device, and the second doorbell is invisible to the host device. Once the data has been in the SQ, the second doorbell is knocked. The controller then retrieves data from the SQ only when both doorbells have been knocked.

1. The name of the design product: machine edge slow speed pulverizer. 2. The use of the design product: slow speed silent pulverizer for injection molding machine edge pulverizing nozzle material. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The present application is to solve the problem of low efficiency and slow speed of the tooth row in the existing nail gun; a high-efficiency trochoidal roller rack structure and nail gun are provided, wherein the trochoidal roller rack structure comprises a striker and a transmission structure; the striker and the transmission structure are connected; characterized in that the transmission structure comprises an engaging wheel; the engaging wheel is in the shape of a disc as a whole; a plurality of cylindrical teeth are arranged on the engaging wheel and are arranged at equal angles around the axis of the engaging wheel; a trochoidal rack is arranged on the striker and cooperates with the plurality of cylindrical teeth; the trochoidal rack is a tooth row composed of a plurality of trochoidal teeth; the linear velocity of the striker is improved, and the efficiency of the nail shooting is improved.

The invention discloses building waste material crushing and recycling equipment, and relates to the technical field of crushers, the building waste material crushing and recycling equipment comprises a machine body, a servo motor, a conveying part and a crushing bin are arranged on the machine body, a crushing roller is arranged in the crushing bin, a protective cover plate is arranged above the crushing bin, the rotating sleeve is connected with the servo motor and the crushing roller, and the switching mechanism is in transmission connection with the rotating sleeve. According to the equipment, a rotating sleeve passively drives a switching mechanism to switch the output direction of a servo motor according to the rotating speed difference of the rotating sleeve caused by the number of brick materials in a crushing roller: high rotating speed corresponds to a material shortage state, and the switching mechanism drives a conveying part to automatically feed; meanwhile, a limiting mechanism avoids synchronous rotation of an inner ring and an outer ring, faults are reduced, the screen box is obliquely installed so that large particles can be conveniently cleaned, the equipment does not need a motor to keep the single rotating speed for a long time, the multiple functions of feeding, crushing and screening are integrated, and the energy consumption of the motor is greatly reduced; the energy-saving characteristic and high practicability are realized.

The application relates to the technical field of ingot casting, in particular to a casting method of a low-segregation fine-grain ingot of high-melting-point metal, which comprises the following steps: S1: melting and heat preservation; S2: height adjustment and rotation starting; S3: flow guiding and cloth rotating and temperature uniformizing; S4: lifting and continuous casting: after the start of the casting, the metal rod is lifted at a slow speed while maintaining rotation, and the rotating torque M of the metal rod is continuously measured; if M is greater than or equal to F, the metal rod is lifted, the PLC controls the continuous tilting of the melting pot, the tilting degree matches the lifting height, the metal melt in the melting pot flows into the mold along the metal rod, the amount of the metal melt in the mold is kept consistent, and the ingot is formed until the forming of the ingot is completed; and S5: arc starting and temperature supplementing. The designed casting method of the low-segregation fine-grain ingot of high-melting-point metal improves the temperature and the uniformity of the composition in the ingot casting process through flow guiding, heat conduction and stirring of the metal rod, and a low-segregation ingot mainly composed of fine equiaxed crystals can be obtained.

A data structure for an immersive scene description comprises information representative of a haptic effect based on a haptic mipmap comprising a plurality of haptic textures. At rendering, one haptic texture is selected from the plurality of haptic textures at least based on the speed of the user interaction: when the user interacts at a slow speed, a texture with fine details is selected to render the haptic feedback and when the user interaction is faster a texture with less details is selected. The haptic texture may also be selected based on the tracking rate of the rendering device. This selection of haptic texture can ensure a satisfying rendering of the haptic effect.

The utility model discloses a packing device with accurate weighing and high efficiency, which belongs to the technical field of weighing and packing integration, and is characterized in that the packing device comprises a weighing and packing integrated platform, and the front side of the top of the weighing and packing integrated platform is movably connected with a pressure scale; the top of the weighing and packaging integrated platform is movably connected with a self-service material supplementing mechanism, the inner side of the self-service material supplementing mechanism is movably connected with a hole diameter adjusting mechanism, batching, weighing and packaging integration can be achieved, the overall working process and time are greatly saved, through cooperative operation of a material storage tank, an electric cambered surface guide disc, an electric telescopic supporting column and other devices, the material can be conveniently stored, and the working efficiency is improved. The automatic packaging machine can automatically adapt to packaging bottles in different shapes, such as special five-pointed star-shaped bottles, during packaging, an operator only needs to adjust batching parameters and place the bottles in advance, the equipment can automatically complete operations such as positioning, conveying and weighing, and the problems of low speed and low efficiency due to the fact that all links are independently carried out during manual packaging in the past are effectively solved.

A set of drill bits and / or burrs for attaching to a hand piece and fitting into an access guide during endodontic access cavity preparation is provided. The drill bits are optionally grouped into two types: a high speed, friction grip attachment type drill bit and a slow speed, latch attachment type drill bit. Each of the drill bits has a different longitudinal length for performing different functions during operation procedures. A method of performing an endodontic access cavity preparation with the set of drill bits is also provided.

The embodiment of the application provides a method for automatically controlling the bending roll insertion amount of a tension leveler unit and a storage medium, and relates to the technical field of bending roll insertion amount control. The method comprises the following steps: calculating the actual elongation of a strip steel according to the outlet tension roll speed and the inlet tension roll speed of the tension leveler unit; calculating the difference between the actual elongation and the set elongation; and adjusting the bending roll insertion amount based on the difference. The technical scheme of the application proposes a quantitative relationship between the elongation and the insertion amount. Different tension leveler units can be optimized on the basis of the formula, smooth dynamic adjustment of the insertion amount according to the elongation is realized, and the problems of slow manual adjustment speed of the bending roll insertion amount and large actual elongation fluctuation are solved.

To prevent the occurrence of multiple feeding in a medium supplying device without requiring the user to do any effort. [Solution] The media supply device (1) comprises a loading table (10) on which media (P) are loaded by sequentially replenishing media stacks (PA, PB), supply members (21, 22) that supply media (P) from the loading table (10), a boundary detection unit (60, 70, 80, 44) for detecting the boundary (B) of the media stack (sheet stacks PA, PB), and a control unit (41) that controls the supply members (21, 22) so that the media (P) located at the boundary (B) is supplied at a slower speed than the other media (P).

The invention relates to the technical field of copper pipe detection, in particular to an internal thread copper pipe welding strength detection device which comprises an annular guide rail, two sliding seats arranged on the annular guide rail in a sliding mode and a driving unit, clamping units and detection units are arranged on the sliding seats, and the clamping units are used for fixing copper pipes. According to the invention, the problems of low speed and low efficiency of the traditional detection mode are effectively solved, the bending detection is used for replacing the traditional axial stretching detection, and the torque required for bending the copper pipe is far less than the tensile force required for axially snapping the copper pipe, so that the detection mode is more convenient, the structure is simple, the equipment cost is greatly reduced, and the detection efficiency is improved. Meanwhile, the copper pipe can be rapidly bent, the detection speed is higher, and the efficiency is higher; whether the welding strength is qualified or not can be quickly judged by detecting the deviation angles of the base metal on the two sides of the welding position, and the judgment mode is simpler and more efficient.