1347 results about "Tractive force" patented technology

The invention relates to the technical field of ship control, in particular to a fishing boat control system based on data analysis, which comprises a traction load analysis module, a fluctuation condition division module, an attitude disturbance estimation module, a propulsion power regulation module and a rudder angle correction output module. According to the method, by analyzing the traction force load sequence value and the moment arm length of the fishing net traction point, calculating the left and right side offset torque and marking the action direction, the attitude adjustment precision of the ship is optimized, the operation sea condition level is adjusted according to data, and the ship can be subjected to more reasonable attitude estimation and adjustment under the dynamic working condition; the wind pressure change rate and the pitch angle rate are combined to judge the direction resultant force trend, and the navigation attitude is adjusted according to the sea condition grade, so that the ship can more accurately resist the influence of sea surface storm waves and maintain the course stability, and the rudder angle is corrected by adjusting the propulsion power in real time, limiting the adjustment amplitude of the propulsion power and correcting the rudder angle according to the real-time data of the navigation attitude. And the propulsive efficiency and the navigation precision are optimized.

The invention relates to the field of locomotive power battery electric quantity control, and particularly discloses a locomotive power battery electric quantity hysteresis equalization control method, which comprises the following steps that: a traction force exerting mode is reset into an axle load transfer mode, and the initial value of an electric quantity equalization compensation coefficient K is a rack axle load transfer coefficient corresponding to zero speed; judging whether the current mode is a power battery power supply mode; if yes, the TCU receives the electric quantity of a front power battery and the electric quantity of a rear power battery in real time according to the current locomotive working mode, calculates the electric quantity average value difference value, monitors the auxiliary load power and the traction motor power and calculates the power difference value; entering a hysteresis control logic process; calculating a dynamic traction force compensation coefficient, ensuring that the traction force compensation amount is matched with the actual load characteristic of the system, correcting the traction characteristic curve in real time, and dynamically compensating the electric quantity difference of the battery; and performing traction distribution control according to the locomotive speed and outputting corresponding traction.

The invention relates to the technical field of automatic driving, in particular to a driving control method and system for an unmanned electric tractor, and the method comprises the following steps: obtaining humidity data to generate a state diagram, judging slip to trigger traction adjustment based on the state diagram, analyzing a slope recognition risk to generate a slope parameter, and reading a braking force to judge, coordinate and generate a distribution instruction. According to the method, the humidity difference is obtained through multi-point soil humidity monitoring, distribution characteristics are extracted, accurate sensing of the state of an operation area is achieved, the wheel rotating speed and traction force signals are combined, slipping is recognized in advance, the traction force is dynamically adjusted, and the driving force is kept stable; based on joint analysis of gradient change and vehicle state, slope risk is recognized in advance, optimization control is performed, braking force of front and rear wheels is dynamically distributed, slippage caused by unbalance is avoided, safety of complex terrains is improved, and vehicle stability, path control precision and energy utilization efficiency are improved through cooperation of multi-dimensional data perception and dynamic prediction.

The invention belongs to the technical field of mechanical transmission, and discloses a conductor ring and magnetic resistance array composite permanent magnet thrust bearing and a damping force calculation method. The conductor ring and magnetic resistance array combined type permanent magnet thrust bearing realizes the bearing of non-contact magnetic thrust through the combination of the eddy current ring and the magnetic group array. When thrust from a propeller at the stern end of a propulsion shafting acts, the rotor magnetic group array axially moves, axial traction force is generated between the rotor magnetic group array and the stator magnetic resistance array to counteract the thrust action from the axial direction, meanwhile, the magnetic group array cuts the vortex ring, induction damping is generated on the surface of the vortex ring, damping force is formed, and the vortex ring is driven to rotate. And therefore, the longitudinal vibration during transmission of the propulsion shafting is reduced, and the propulsion shafting system is more silent and stable during operation. In addition, the damping force calculation method does not need complex three-dimensional structure modeling and grid division, is simple in solution, high in universality and short in calculation time consumption, and has high engineering application practical value.

The invention provides a driving structure of a crawler belt of a stretcher crawler, and belongs to the technical field of the stretcher crawler, the driving structure of the crawler belt of the stretcher crawler is provided with a dual-driving system, and a crawler belt assembly surrounds two driving wheels and a supporting wheel to form a complete transmission path. Crawler tension changes can be detected in real time, and the rotating speed of the second driving motor can be automatically adjusted. When the front-section resistance of the track is increased, the tension detection device senses the change, and the mechanical speed regulator reduces the rotating speed of the second driving wheel through the centrifugal block and the transmission gear set to form a rotating speed difference to increase the front-section tension of the track so as to provide larger traction force. The whole system follows the constraint relation that delta n = n1-n2 = k * delta T + C, it is ensured that the rotating speed difference linearly corresponds to the tension change, and accurate dynamic adjustment of the crawler tension is achieved through coordinated operation of the double driving wheels.

The invention discloses an intelligent cable traction system and a cable traction laying control method. A cable traction machine can electrically pull a traction rope and detect traction force in real time. And when the traction force exceeds a preset traction high threshold value, the cable winding and unwinding mechanism can be controlled to reduce the winding speed, so that the traction rope wound on the traction wheel is properly loosened, and the traction force is gradually recovered to be stable. And meanwhile, the cable winding and unwinding mechanism automatically adjusts the winding speed according to extrusion force data fed back by the pressure detection assembly, and it is ensured that the extrusion force is maintained within the preset parameter range. According to the embodiment of the invention, the extrusion force and the traction force are creatively combined, the winding speed of the cable winding and unwinding mechanism is comprehensively regulated and controlled, and the intelligent cable traction system is always in a reasonable working interval during traction and winding of the traction rope through an intelligent control mode, so that automatic traction and winding of the traction rope such as a steel wire rope are realized; therefore, the automatic traction operation of the cable connected with the traction rope is completed, and the intelligence and safety of cable laying construction are improved.

The invention relates to a locomotive coupler calibration test bench, and the test bench comprises a pressurization device which is used for providing the two ends of a to-be-tested coupler with opposite acting forces; the hoisting device is adjacent to the pressurizing device; the protection device is located on the outer side of the pressurizing device, and the protection device is configured to be switched between a first state for shielding the whole area of the pressurizing device and a second state for exposing at least part of the area of the pressurizing device. After the to-be-tested car coupler is hoisted to the pressurizing device through the hoisting device, acting force in opposite directions can be provided for the two ends of the to-be-tested car coupler through the pressurizing device, a conventional mode of applying traction force through locomotive traction is replaced, the force application control precision in the car coupler force calibration process is improved, and then the calibration result precision is improved; and train operation safety is guaranteed. Moreover, in the test process, the precision of the calibration result can be prevented from being influenced by foreign objects through the protection device, and meanwhile, the operation safety of testers is improved.

The invention provides a new energy vehicle flying protection method based on a vehicle comprehensive control system and a medium. The new energy vehicle flying protection method comprises the following steps that vehicle state parameters are continuously collected; based on the vehicle state parameters, judging whether the vehicle enters a flying state or not; after it is confirmed that the vehicle enters the flying state, power pre-adjustment and vehicle body posture pre-adjustment are conducted on the vehicle; when the vehicle lands, traction control and stability control are cooperatively executed, so that stable grounding and posture stability are achieved. According to the integrated design, the advantages of system redundancy and cooperative control are brought into full play, the problems of information islands and control conflicts possibly existing in a traditional independent protection system are solved, the whole vehicle control system can form unified control resultant force, and the control effect and the system reliability are improved.

The invention relates to the technical field of agricultural machinery, in particular to a rotary gravity center regulating crawler platform for hills and mountains, which sequentially comprises a crawler chassis assembly, a gravity center regulating assembly and a functional module mounting platform from bottom to top, the gravity center adjusting layer is installed on the chassis rack and located in the space between the crawler belts on the two sides, the gravity center adjusting layer is composed of a supporting base, a slewing bearing module, a linear lead screw module, a battery balancing weight and a machine shell, and the balancing weight is preferably a power battery pack; and the functional module mounting platform is fixed at the upper end of the gravity center adjusting assembly. By adjusting the angular and radial distribution of the counterweights, the center-of-gravity position of the whole machine under the working conditions of cross slopes, longitudinal slopes and obstacle crossing is changed, the stability and driving safety of the crawler belt platform in complex terrains of hills and mountains are improved, and the crawler belt platform can be provided with different functional modules according to operation objects. The method is suitable for various hilly and mountainous region agriculture and engineering application scenes.

The invention relates to the technical field of roller coating hyperbolic aluminum plate machining control, in particular to an edge auxiliary traction system and method for longitudinal large-curvature forming of a roller coating hyperbolic aluminum plate. The edge auxiliary traction system comprises a clamping pre-deformation unit, when a main stretcher is started, a traction clamping jaw pulls down at a basic speed, and a dynamic proportional relation between the edge stretching speed and the central stretching speed is established; during stretching, when the displacement increment reaches a threshold value, the traction force is proportionally distributed according to the distance from the center line, the pull-down force is updated in real time, when the strain deviation exceeds the limit, a deviation area is positioned through a multi-modal array, the traction speed and the pull-down force of the area are increased, and the local curvature radius reaches a critical range, a reinforced traction mode is started; speed and plastic flow phase locking and grain orientation regulation and control are achieved, traction force is maintained till stress is released in the pressure maintaining stage, the longitudinal large-curvature forming precision of the roller-coated hyperbolic aluminum plate is improved, wrinkles and cracks are reduced, and the method is suitable for machining of the high-precision hyperbolic aluminum plate.

According to several aspects, a method for controlling an electric vehicle is provided. The method may include adjusting an operation of one or more electric motors of the electric vehicle to induce a loss of traction of a first wheel of the electric vehicle on a first side of the electric vehicle. The method further may include adjusting an operation of an electric steering system of the electric vehicle to induce a yaw motion of the electric vehicle. A direction of the yaw motion is away from the first side of the electric vehicle.

A road driving optimization method and system having a vehicle sensor configured to collect external sensor data, vehicle status data, and communication data; a control module configured to analyze the collected data to detect a trigger event, a state of the target vehicle, an achievable speed range, and an instantaneous traction; a decoupling estimator module configured to analyze the trigger event, a state of the target vehicle, an achievable speed range, and the personalized driver profile to determine a maximum free flow distance and an arrival speed at the free flow distance; a machine learning model configured to predict a speed profile of the host vehicle during approaching the trigger event based on the determined free flow distance, the determined arrival speed at the determined free flow distance, and the instantaneous traction; and a cruise control system configured to implement the predicted speed profile.

The invention relates to the technical field of traction force control systems, and provides a vehicle traction force control method which comprises the steps that vehicle dynamics information of a to-be-controlled vehicle is obtained, and the vehicle dynamics information is information describing the movement condition of the to-be-controlled vehicle; according to the vehicle dynamics information, a plurality of road adhesion coefficients are calculated through a plurality of adhesion coefficient calculation modes; fusing the plurality of pavement adhesion coefficients to obtain a comprehensive pavement adhesion coefficient; according to the vehicle dynamics information, multiple vehicle slip rates are calculated through multiple slip rate calculation modes; fusing the plurality of vehicle slip rates to obtain a comprehensive vehicle slip rate; and according to the comprehensive road adhesion coefficient and the comprehensive vehicle slip rate, the driving torque and the wheel braking force are calculated respectively, and the to-be-controlled vehicle is controlled based on the driving torque and the wheel braking force. According to the method, multiple influence factors are comprehensively considered through data fusion processing, and the control precision of the vehicle traction control system is improved.

The invention relates to the technical field of AR (Augmented Reality), in particular to an intelligent exhibition hall guide information method and system based on the AR technology, and the method comprises the following steps: traversing a scene graph of a 3D model based on a user triggering instruction and the 3D model of an exhibit, recognizing a grid object without child nodes as an independent part, and storing the independent part in the scene graph; reading the axial constraint and the surface fitting constraint associated with each part, and reversing the direction vector of the axial constraint; according to the method, the initial disassembly vector of each part is reversely calculated based on the internal axial and surface fitting constraints of the exhibit 3D model, and a dynamic decomposition view conforming to the mechanical logic and the assembly sequence is provided. Furthermore, in an iterative solution loop, the overlapping volume of a part bounding box is detected in real time, a repulsive force is applied, and a traction force is generated by introducing a virtual plane parallel to a user viewpoint, so that a layout in which all parts are clearly visible and do not shield each other can be dynamically generated.

The invention relates to the technical field of fatigue testing, and discloses a blade multi-degree-of-freedom traction loading device and a fatigue testing method.The blade multi-degree-of-freedom traction loading device comprises a rail supporting structure, a blade base structure, a blade clamp and a multi-direction loading assembly, and the blade base structure bears and fixes the root of a tested blade; the blade clamp is fixed with the blade; the multidirectional loading assembly comprises a track and at least one traction actuator, and the track is fixed on the track supporting structure; the traction actuator is arranged on the track, and the traction actuator is configured to be capable of moving along the track; the traction actuator comprises a track displacement driving mechanism and a traction mechanism; the traction actuator is configured to move on the track through the track displacement driving mechanism; the traction mechanism is connected with the blade clamp, and the traction mechanism is configured to apply an adjustable traction force to the to-be-tested blade. The traction direction is adjusted by pulling the actuator to move to different positions along the track, and different traction forces are applied in cooperation with the traction mechanism, so that multiple loading modes are realized.

A vehicle with vehicle traction enhancement system providing increased tractive force is disclosed. The traction enhancement system includes a thruster. The thruster includes a prime mover and an air pressure generator. The traction enhancement system further includes an energy storage to provide energy for the prime mover. The thruster is mounted on vehicle chassis structure, body, and / or suspension, substantially vertical to the vehicle to provide an upward thrust to the vehicle to increase the reactive downward normal force to provide the enhanced tractive force.

The invention relates to the technical field of bridge construction, in particular to a bridge super-long stay cable penetrating construction method, which comprises the following steps of: presetting a monitoring point position at a super-long stay cable, installing a tilt angle sensor to obtain pitch and roll angles of a segment, and fixing a tension sensor to measure initial tension at a cable end. A pitch angle, a roll angle, a three-dimensional coordinate and initial tension data are collected in real time at a preset point position of the stay cable, a dynamic response cable body attitude and stress model is constructed in combination with a designed linear control point and an anchoring point space coordinate, traction force distribution and traction point position combination are optimized, synchronous or asynchronous cooperative loading of multiple traction forces is achieved, and the traction force distribution and the traction point position combination are optimized. And in the cable penetrating process, cable body posture control and mechanical response balance are kept. Sensing data and a target parameter interval are continuously compared, a stress closed-loop control mechanism is formed by adjusting a traction force value and a loading rate in real time, and the risks of stress concentration and linear deviation expansion are avoided.

A freight coupler (100) is arranged on a first rail vehicle to interconnect the first rail vehicle with a second rail vehicle. The freight coupler (100) has outer and inner portions (110; 120). The outer portion (110) includes a first locking mechanism (115) of a coupler 5 head, which first locking mechanism (115) is configured to be connected to a second locking mechanism (1115) of a counter-coupler head of the second rail vehicle. The inner portion (120) includes a mounting structure for mounting on the first rail vehicle. At least one shear member (131) interconnects the outer and inner portions (110; 120) mechanically. The at least one shear member (131) is configured to break in response to a draft force (FD) exceeding a first threshold level, which draft force (FD) pulls the outer and inner portions (110; 120) away from one another so as to disconnect the outer and inner portions (110; 120) mechanically from one another and allow the outer portion (110) to be physically separated from the inner portion (120). The at least one shear member (131) is integrated in a mechanical interface (200) that is configured to absorb buff forces (FB) between the inner and outer portions (110; 120), which buff forces (FB) are absorbed without the at least one shear member (131) being broken, and which buff forces (FB) exceed the first threshold level.

The invention relates to the technical field of winches, and particularly discloses a marine winch for hydrological survey, which comprises a base, a winding drum is rotatably connected in the base, a cable is wound on the outer surface of the winding drum, a tensioning assembly is connected to the outer surface of a sliding table, the sliding table is slidably connected with the base through a linear motor, and the tensioning assembly comprises a damping wheel and a pressing wheel. A cable penetrates through the annular outer surface of the damping wheel and the annular outer surface of the pressing wheel, the cable is clamped by the damping wheel and the pressing wheel, the cable is tensioned when the winding drum winds the cable, by arranging the tensioning assembly, under the cooperation of the driving wheel and the damping wheel, the speed difference exists between the damping wheel and the driving wheel after the damping wheel makes contact with the cable, and through the damping part, the cable is tensioned. The damping wheel with the speed difference has certain resistance, the cable is tensioned through the resistance, dislocation of the cable is avoided, meanwhile, due to the design of the driving wheel and the driving motor, the cable can bear enough traction force in the winding and releasing stages to keep the tensioning state of the cable, and the traction force can be adjusted and controlled by the driving motor.

The invention discloses a traction stretching motion state monitoring method based on signal processing, and relates to the technical field of signal processing, and the method comprises the following steps: collecting traction force, electrocardio, displacement and conductivity signals, carrying out normalization and filtering processing, extracting phase and amplitude components, and constructing a signal spectrum containing track change and time sequence characteristics; establishing a structure response mapping relation to generate a self-evolution feature map, and aligning the self-evolution feature map with the amplitude component to form a channel-level feature matrix and a multi-channel feature representation map; structural path perception convolution mapping is adopted, a path dissipation factor is introduced to extract deep features, direction enhancement is achieved in combination with an energy constraint factor and a scheduling matrix, and an energy adjustment feature map is obtained; finally, the features are spliced according to time steps to form a high-resolution sequence, signal optimization is achieved through iterative training, and the state recognition accuracy and stability are improved.

A method for controlling a traction control system, ABS and actively controlled suspension. The method includes receiving an sensor output from at least one suspension sensor at a controller. The sensor output is indicative of a vertical height of the suspension relative to a road. The method determines an amplitude of vertical motion of the suspension over time using the received sensor output. The method identifies peaks and valleys in the amplitude of vertical motion of the suspension over time. The method determines that a rough road condition is present in response to a number of peaks and valleys exceeding a predefined threshold amplitude occurring more often than a predefined threshold frequency. An active suspension control of at least one wheel system of a vehicle is adapted in response to determining that a rough road condition is present.

The invention relates to the technical field of medical instrument control, in particular to a massage traction dynamic parameter cooperative control method, which comprises the following steps: S1, collecting real-time three-dimensional motion trails of each segment of a spine and stress distribution and deformation data of soft tissues in a target area; s2, calculating a deviation value between a current traction action and a target state, and generating a cooperative adjustment instruction of traction force, angle and frequency; s3, the traction direction is adjusted according to the traction force adjusting instruction in the S2; s4, modulating and controlling the intermittent frequency of the traction action; s5, if the deformation rate exceeds a preset safety threshold value, triggering a dynamic compensation mechanism; s6, forming a personalized traction scheme for the current patient; according to the spine traction control system and method, personalized spine traction control is achieved by monitoring the spine movement track and soft tissue stress changes in real time and dynamically adjusting traction force, angle and frequency, and therefore the treatment effect is remarkably improved, and the soft tissue injury risk is reduced.

The weigh of a vehicle body may be shifted onto selected wheels using the adjustable suspension systems of the vehicle to induce an undulating motion sequence of the vehicle. This may aid the vehicle to regain traction when a wheel is stuck. A first wheel may be turned in a first direction and more of the vehicle weight may be shifted onto the first wheel, while spinning one or more wheels, then this may be repeated for each wheel of the vehicle sequentially. More or less torque may be applied to the wheel onto which more of the vehicle's weight is shifted. The four-wheel sequence may be done at a predefined cadence and repeated as necessary. Also, based on terrain depth sensor signaling, an optimal weight distribution of the vehicle may be determined to aid vehicle movement on a hilly or off-road terrain.

The invention discloses a pet sliding traction device. The pet sliding traction device comprises a shell, a first winding module, a second winding module, a first driving mechanism and a second driving mechanism, wherein a wire outlet is formed in one side of the shell; the first winding module comprises a first wire spool and a first rope; the second winding module comprises a second wire spool and a second rope; the first driving mechanism is used for driving the first wire spool to rotate forwards and backwards; the second driving mechanism is used for driving the second wire spool to rotate forwards and backwards; the first driving mechanism drives the first wire spool to rotate and / or the second driving mechanism drives the second wire spool to rotate, so that the first rope and the second rope can synchronously stretch out or retract from the wire outlet. The working form of the pet-sliding traction device is more flexible and diversified, the traction force and the traction direction similar to human traction can be better provided, and the traction effect is better.

An elevator tractive drive system including a plurality of wheels coupled to an elevator cab. The plurality of wheels are configured to compress into one or more shaft-mounted rails and / or one or more interior shaft wall surfaces. The plurality of wheels are powered by one or more motors coupled to a transmission configured to deliver regulated torque to the plurality of wheels. The system includes various sensors to measure parameters related to kinematics of the cab and / or the plurality of wheels, parameters related to a mass or a weight of the elevator cab and any payload and / or parameters related to compressive forces generated at a wheel-rail or wheel-shaft interface. A controller is configured to receive input from each of the sensors and activate the at least one actuator and / or motors, to generate or adjust regulated compressive force and associated tractive force delivered at the wheel-rail interface and / or the wheel-shaft interface.

The invention discloses a tractor tilling depth adjusting method and device, and belongs to the technical field of agricultural machinery. The method comprises the steps that the transmission speed ratio is determined according to the wheel rotating speed and the engine rotating speed of the tractor; determining the output power of the engine according to the engine speed; according to the engine rotating speed, the output power, the accessory consumption power and the transmission speed ratio, the maximum traction force capable of being provided by the tractor is determined; the tilling depth of the plough is adjusted according to the pulling force of the plough on the tractor, the maximum traction force and the set tilling depth. According to the embodiment of the invention, the tilling depth can be automatically adjusted according to the load change in the tilling operation process of the tractor, the problem of serious speed reduction of an engine is avoided, the tilling depth adjusting efficiency is improved, and the tilling operation efficiency is improved.

The invention discloses an obstacle crossing method and system of a crawler-type obstacle crossing robot, a readable storage medium and a computer program, and the method comprises the following steps: obtaining point cloud data in front of the robot, carrying out the recognition and judgment according to the point cloud data, and obtaining the data of an obstacle in front; calibrating the pose of the robot according to the obstacle data; according to the robot parameters, traction force generated by a driving motor is obtained; the output power of the driving motor is optimized according to the traction force, so that the robot can cross obstacles; the driving motor is started, and the robot crosses obstacles. The obstacle crossing success rate of the robot can be effectively improved by detecting the obstacle and calibrating the pose of the robot, calculating the traction force generated by the driving motor of the robot and optimizing the output power of the driving motor; by updating the obstacle data in real time and adjusting the wheel speed difference of the robot, the orientation of the robot is kept in the center line direction of the obstacle, the robot can quickly and smoothly cross the obstacle, and good adaptability and robustness are achieved.

The embodiment of the utility model provides a dental instrument which comprises a shell-shaped body, the shell-shaped body is provided with a plurality of tooth containing cavities and a traction part, the traction part is of a cavity structure formed by protruding and extending from the surface of the shell-shaped body to the far-tooth direction, and the traction part and the edge of the shell-shaped body are arranged in a spaced mode; the side surface of the traction part is provided with an opening structure used for hanging a traction piece, the side surface of the traction part is further provided with a reinforcing ridge formed by protruding or recessing part of the side surface, one end of the reinforcing ridge is adjacent to the free end of the traction part, the other end of the reinforcing ridge is far away from the free end of the traction part, and the whole reinforcing ridge is roughly arranged in the protruding and extending direction. Through the arrangement, the anti-bending section coefficient of the side surface of the traction part under the action of traction force can be effectively improved, so that the deformation resistance of the side surface of the traction part in the traction direction is improved.

The invention relates to a rail transit technology, in particular to a train adhesion sensing method and system. When the train system works in a traction, coasting or electric braking working condition, starting an adhesion sensing mode, configuring an adhesion sensing shaft, and detecting the speed of the train; when the train speed is larger than a first train speed threshold value, the current of the adhesion sensing shaft is controlled, so that the traction force or the electric braking force of the adhesion sensing shaft is balanced with the adhesion force of the adhesion sensing shaft; the traction force or the electric braking force of the adhesion sensing shaft is calculated, and the adhesion coefficient of the adhesion sensing shaft is calculated according to the traction force or the electric braking force; the adhesion coefficient of the adhesion sensing bogie is calculated according to the adhesion coefficient of the adhesion sensing shaft, and the adhesion coefficient of the whole train is calculated according to the adhesion coefficient of the adhesion sensing bogie. According to the method, the adhesion condition of the wheel track in the train operation process is sensed in real time, compared with an existing operation design according to a fixed adhesion coefficient, accurate line state information is provided for train operation, and the safety and efficiency of train operation control are improved.