351 results about "Slow speed" patented technology

The invention relates to the technical field of sound wave detection, in particular to an intelligent detection system for a motor, which comprises a data acquisition module, an abnormality judgment module, a type judgment module, a risk determination module, an adjustment module and an alarm module. According to the invention, through combination of sound wave analysis and various real-time monitoring parameters, accurate detection of the operation state of the motor is realized, the system can acquire the sound pressure level, the vibration acceleration, the winding current, the bearing temperature, the rotating speed and the torque of the motor in real time, and rapidly determine abnormity based on a preset threshold value, and after abnormity is detected, the system is started. The system further combines current, temperature and torque information to analyze the abrasion type, and evaluates the serious risk level according to the rotating speed and the vibration acceleration, so that refined risk management is provided, and the problems of low fault judgment precision and slow response speed caused by data transmission delay and environmental interference are effectively solved.

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.

Apparatus and methods relate to a gear reducer, which may be used downhole to reduce rotational speed output from a downhole motor, such as a turbine motor, to a slower speed desired for rotation of a drill bit. The gear reducer includes a planetary gear arrangement coupled to receive rotational input from the downhole motor and a cycloidal gear arrangement driven by rotation resulting from the planetary gear arrangement. An output shaft couples to the cycloidal gear arrangement and rotates during operation slower than the rotational input from the downhole motor.

The invention relates to the technical field of material transfer equipment, in particular to a double-station stacking machine and a control method thereof. The double-station stacking machine comprises a track module and a stacking module. The rail module comprises a sky rail and a ground rail, the stacking module comprises two stacking units, and the stacking units are located between the sky rail and the ground rail; the stacking unit comprises a material carrying frame and two stand columns, the material carrying frame is arranged between the two stand columns, the upper ends of the stand columns are slidably connected with the sky rail, the lower ends of the stand columns are slidably connected with the ground rail, and the two sides of the material carrying frame are slidably connected with the corresponding stand columns correspondingly so that the material carrying frame can move in the extending direction of the stand columns. Telescopic forks are arranged on the two sides of the material carrying frame correspondingly and can stretch out and draw back in the direction perpendicular to the sky rail or the ground rail. According to the double-station stacking machine and the control method thereof, the defects that an existing stacking machine is low in operation efficiency, the goods warehouse-in and warehouse-out speed is low, and the ever-increasing logistics requirement is difficult to meet are overcome.

[Problem] To provide a video output system, a video output program, and a video output method which are capable of supporting determination of a referee in a match competition and improving the reliability of the determination result. [Solution] Video capturing devices 10 captures a competing scene of both players who compete in a stadium, and the captured videos are outputted to monitors 80 disposed at referees. The output videos are output such that a real-time video is output to a first referee at a constant speed, and a specific video edited by using a part of the real-time video is output to a second referee at a slower speed than the constant speed. On the basis of the specific video, the second referee can verify the determination made by the first referee, thereby improving the reliability of the determination result.

The invention discloses a maintenance and operation fault dynamic early warning system based on a high-speed railway communication network, and relates to the technical field of high-speed railway communication networks. The invention aims to solve the problems of inaccurate fault early warning, slow response speed and the like in the prior art. The system realizes real-time monitoring and intelligent analysis of a railway line through three-level elastic section classification, four layers of intelligent processing modules and a cross-domain cooperation module. The monitoring intensity is dynamically defined according to the annual average failure rate in the third-level elastic section classification; the four-layer intelligent processing module has the functions of multi-module sensing, edge calculation, digital twinning, decision control and the like; and the cross-domain collaboration module ensures the overall efficiency of the system. According to the invention, the accuracy and timeliness of fault early warning are improved, the maintenance cost is reduced, and a powerful guarantee is provided for safe operation of the high-speed railway. In the future, the system is continuously optimized, more application scenes are explored, and the system performance and the user experience are improved.

The invention relates to the technical field of rail transit, in particular to a heavy haul train speed operation curve planning method, device and equipment and a medium. According to the method, the energy consumption factor is comprehensively considered, the train is guided to select a more energy-saving speed running path through pheromones and heuristic information, and the running energy consumption of the train is effectively reduced. Compared with some optimization algorithms with slow convergence speed, the optimal operation curve can be found more quickly, and the optimization efficiency is improved. According to the method, data discretization processing is carried out, and the incidence matrix is established, so that the algorithm can adapt to different line conditions, and an effective speed operation curve optimization scheme is provided for heavy haul trains on different lines.

A hardware processor of a mobile object executes a program stored in a storage device to acquire information indicating a behavior of a mobile object; to recognize whether the mobile object is moving on a roadway or a predetermined region; to recognize presence of a contact portion between the predetermined region and the roadway; to limit a speed at which the mobile object is moving on the roadway to a first speed; to limit a speed at which the mobile object is moving on the predetermined region to a second speed slower than the first speed; and to bring a speed of the mobile object closer to the second speed when the mobile object is moving on the roadway, the contact portion is recognized within a predetermined range from the mobile object, and a behavior of the mobile object satisfies a predetermined condition.

The invention provides a traveling wave rotating ultrasonic motor speed control method and system based on deep reinforcement learning. Firstly, a virtual dynamic model based on a long short-term memory (LSTM) network is constructed, the time-varying behavior of TRUM can be accurately captured, and the average prediction error is within 0.5%. Secondly, designing an intelligent controller based on a near-end strategy optimization PPO algorithm, and optimizing a reward function and structure to enhance the adaptability of a control strategy; simulation and experiment results show that the method realizes the quick response of 0.034 seconds and the tracking error of less than 0.21 rpm, and the error is maximally reduced by 0.42 rpm compared with the traditional controller. According to the method, the problems of insufficient modeling precision, low control precision, slow response speed, poor adaptive capacity to dynamic characteristics and the like in the prior art are effectively solved, and a new path is provided for application of the TRUM in high-precision complex tasks.

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 relates to the technical field of ceramic tile production equipment, and discloses an automatic feeding ceramic tile edge grinding machine which comprises a rack and two side fixing frames, and a feeding mechanism is arranged on the rack and used for driving materials to be automatically conveyed. During use, an edge grinding wheel is driven by a driving motor to rotate at a slow speed, an extrusion wheel can be driven through the friction effect to achieve the rotating function, a rotating shaft and a first bevel gear are driven by the extrusion wheel to rotate synchronously, and therefore a second bevel gear, a cross-shaped rotating sleeve and a cleaning roller brush are adjusted to rotate synchronously, and the edge grinding effect is improved through rotation of the cleaning roller brush and rotation of the edge grinding wheel. Tile scraps and dust remaining on the surface of the edge grinding wheel can be comprehensively cleaned, the grinding performance of the edge grinding wheel is effectively improved, when a cleaning roller brush rotates, self-cleaning can be achieved through a scraping plate, the continuous cleaning capacity of the cleaning roller brush is improved, diamond particles on the side of a diamond finishing pen are adjusted to make contact with the edge grinding wheel, and the grinding efficiency of the edge grinding wheel is improved. And the surface of the edge grinding wheel can be trimmed.

The invention discloses a multi-degree-of-freedom electromagnetic ejection separation and adsorption integrated space interface device, and belongs to the field of mechanical structure design. An existing boarding load separation method is complex in operation, poor in safety, low in separation freedom degree and low in response speed. The controller is used for controlling the posture adjusting mechanism to work according to the sensed position of the boarding load, driving the electromagnetic ejection mechanism to be aligned with the boarding load, receiving alignment information that the electromagnetic ejection mechanism is aligned with the boarding load, controlling the electromagnetic ejection mechanism to work, and locking the boarding load in a clamping and attractive force generating mode; according to locking information that the electromagnetic ejection mechanism and the boarding load are locked, a posture adjusting mechanism is controlled to drive the electromagnetic ejection mechanism and the boarding load to be aligned with the task target; according to the sensing result that the electromagnetic ejection mechanism and the boarding load are aligned with the task target, the electromagnetic ejection mechanism is controlled to be opened, and the electromagnetic ejection mechanism generates repulsive force to eject the boarding load to the task target. The hosting load is separated and captured more safely, and the degree of freedom is higher.

The invention discloses an intelligent control system and method based on a belt conveyor, and relates to cooperative regulation and control of multiple conveyors connected in series. The system comprises a speed mismatching identification module, an abnormal machine positioning module and first and second type exception processing modules. Judging whether the speed is matched or not by monitoring the material distribution state of the connection area of the serial conveyors; for the unmatched abnormal connection areas, the speed abnormal conveyors and the abnormal types are positioned in combination with the material states of the adjacent connection areas; respectively designing processing mechanisms for different exception types with too fast and too slow speeds; for the abnormal condition of too slow speed and insufficient tensioning force preferentially checked, the problems are solved in a targeted mode through heat dissipation adjustment and displacement of the tensioning wheel, graded checking of the situation of invalid adjustment is achieved, and invalid operation is reduced; according to the method, the speed matching is judged through the material distribution state, the abnormity is accurately positioned and graded, the method can adapt to different material characteristics and working conditions, the misjudgment rate is reduced, and stable operation of the serial conveyors is guaranteed.

The embodiment of the invention provides a vehicle control method and system.The method comprises the steps that in the vehicle running process, current running parameters of a vehicle are detected, and the current running parameters are used for representing the running state of the vehicle at the current moment; based on the current operation parameters, actual power and target power of the vehicle at the current moment are determined, the actual power is used for representing power consumed by the vehicle in the actual driving process, and the target power is used for representing power consumed by the vehicle in the stable driving state; on the basis of the actual power and the target power, power needed by the vehicle at the future moment is predicted, predicted power is obtained, and the future moment is the moment after the current moment; and in response to the fact that the predicted power is larger than a discharging power threshold value of a battery in the vehicle, an auxiliary power generation device in the vehicle is controlled to start before the future moment. The technical problem that the power response speed is low when the vehicle needs to supplement the power output of the battery is solved.

The present invention belongs to the technical field of automobile parts processing and forming, and in particular relates to an anti-cracking stamping device for new energy automobile parts, comprising: a processing platform, a lower mold is fixedly connected to the upper end of the processing platform, an upper mold is slidably connected in the vertical direction just above the lower mold, two vertical guide plates are fixedly connected to the upper end of the processing platform, a lifting block is slidably connected between the two vertical guide plates, and the lifting block is fixedly connected to the upper mold; a die pressing mechanism, which is used to drive the upper mold to move downward to realize the die pressing operation. The present invention is capable of accurately adjusting the stamping speed according to the different stages of the stamping process by providing an adjustable feeding mechanism and an electric control mechanism. In the early stage of stamping, a slower speed is adopted to give the material sufficient time to adapt to deformation, and the stamping speed is automatically increased when approaching the forming stage, thereby greatly improving production efficiency and meeting the needs of large-scale production.

The invention provides a vehicle differential steering control method based on motor modulation, terminal equipment and a storage medium. The problems that in the prior art, the response speed is low, the control precision is low, and complex road condition changes are difficult to adapt are solved. Comprising the following steps: periodically acquiring real-time rotating speed signals of left and right wheel motors, and averaging the real-time rotating speed signals through a moving average filtering algorithm; and comparing the average rotating speed data of the left and right wheels, and judging whether the vehicle tends to turn leftwards or rightwards or not. Calculating the expected steering radius and the current linear speed according to a differential control algorithm, determining the due rotating speed difference of left and right wheels, and adjusting the rotating speed of the motor. Factors such as an Ackerman steering geometric model, a road adhesion coefficient and a side slip angle are introduced, and calculation of the steering radius is optimized. A three-phase driving signal is generated through space vector modulation, the on-off state of a three-phase inverter is controlled, and accurate speed control is achieved.

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.

The present invention discloses a fixed photovoltaic power generation array support, which relates to the technical field of the solar energy industry. The present invention includes a photovoltaic panel and four counterweight seats, and further includes: support columns respectively slidably arranged on the corresponding counterweight seats, and a slow-speed sliding assembly is installed between each support column and the corresponding counterweight seat, and the slow-speed sliding assembly is used to enable the support column to slide relative to the counterweight seat at a slow speed; a reinforcement frame fixedly installed between the four counterweight seats, and a wind-powered lifting assembly matched with the photovoltaic panel is installed on the reinforcement frame, and the wind-powered lifting assembly is used to enable the photovoltaic panel to move up and down relative to the ground. The advantages are as follows: The present invention can use wind power as a drive in strong wind weather to automatically lower the photovoltaic panel, thereby reducing the overall center of gravity and improving stability, avoiding being blown down by strong winds and causing serious losses, and during the process of the photovoltaic panel moving down, it can also automatically use the accumulated rainwater to clean its surface, effectively improving the power generation efficiency of the photovoltaic panel during subsequent use.

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 invention discloses a force closed-loop sliding-mode control method for an electronic mechanical braking system, and relates to the technical field of an EMB system of an electric vehicle, and the method comprises the steps: building a motor model according to the basic characteristics of a motor under a rotor synchronous coordinate system; and based on a novel power exponent reaching law, force closed-loop sliding mode control of the electronic mechanical braking system is constructed according to a motor model and a relational expression between clamping force and friction plate displacement. By designing the force closed-loop sliding mode control power exponent reaching law, the clamping force is controlled in real time, and the problems that under the condition that other coefficients of an existing sliding mode control reaching law are the same, the reaching speed of a state variable to a sliding mode surface s = 0 is low, and buffeting can be generated are solved.

1. The name of this design product: Lure (Water Surface, Slow Speed). 2. Purpose of this design product: Used as a fishing lure. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

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 present invention provides a butt joint traction device for PE pipe production, belonging to the technical field of pipe production, and is used to solve the problems of slow speed and easy injury of manual butt joint traction machines and PE pipes. It includes a collection box and a clamping assembly. An outlet die is fixed above the collection box. A traction assembly is arranged above the collection box. A cutting assembly is arranged inside the traction assembly. A pushing assembly is arranged above the collection box. The clamping assembly includes a pressing motor and a clamping box. The clamping box is fixed on the collection box. A number of groove plates are fixed inside the clamping box. A rack is slidably arranged on the groove plates. An electric heating plate is fixed at the end of the rack. A number of gears are rotatably arranged inside the clamping box. The gears are meshed with the rack. An internal gear is meshed with a number of the gears. The pressing motor is fixed on the side of the clamping box. The output shaft of the pressing motor is connected to the gear. Through the cooperation of the clamping assembly and the cutting assembly, the present invention can quickly cut, heat and clamp-connect the pipe material, improving the production efficiency of PE pipes.

The utility model discloses a double-speed control mechanism with a manual separating device, which comprises a repulsive force mechanism and a mechanism main pull rod, one end of the repulsive force mechanism is connected with a permanent magnetic mechanism, the mechanism main pull rod movably penetrates through the centers of the repulsive force mechanism and the permanent magnetic mechanism respectively, and one end of the main pull rod close to the repulsive force mechanism is connected with an adapter block. An emergency opening assembly is fixed to the end, away from the repulsive force mechanism, of the permanent magnet mechanism through a first bolt. The double-speed control mechanism with the manual opening device provided by the utility model solves the problem of slow opening speed caused by complex structure and inconvenient installation of a spring operation mechanism used in the prior art, and is provided with a manual emergency opening structure at the same time.