16results about How to "Fix jitter" patented technology

The application discloses a gimbal pre-look feedforward and body maneuver decoupling cooperative control method for power transmission inspection, comprising the following steps: acquiring a body maneuver instruction sequence to be executed by a UAV, and synchronously collecting multi-source state parameters of the body and the gimbal; dynamically estimating the body response delay based on the multi-source state parameters containing the load, the voltage and the wind field, and determining the starting timing of the gimbal pre-look compensation in combination with the instruction characteristics; simultaneously, analyzing the track geometric feature variation of the maneuver instruction sequence, establishing a mapping relationship from the track geometric feature to the gimbal dynamics demand, and generating a gimbal feedforward control instruction; and based on the starting timing, injecting the gimbal feedforward control instruction into the gimbal control loop to drive the gimbal to execute the pre-look compensation action. Through the multi-physical field delay estimation and the track geometric feedforward, the gimbal shaking problem caused by the pre-look timing deviation due to the working condition change and the curvature mutation is solved, and precise image stabilization under large maneuver is realized.

This application relates to a method, apparatus, computer device, and storage medium for resetting a vehicle controller. The method includes: after the vehicle controller is woken up, storing the motor request status and motor request control parameters in a memory in real time; the memory maintains the motor request status and motor request control parameters prior to the vehicle controller reset during the vehicle controller reset process; when the vehicle controller experiences a fault reset, controlling the motor using the motor request status and motor request control parameters prior to the vehicle controller reset during the reset process. This method enables motor control using the motor request status and motor request control parameters prior to the vehicle controller reset during the reset process. This process avoids sudden changes in motor request control parameters, preventing severe vehicle vibration and fundamentally solving the vehicle vibration problem caused by vehicle controller reset.

The utility model relates to the technical field of focusing, in particular to a focusing device for improving focusing precision based on a long lens cone, which comprises a substrate; the fixed lens cone is arranged on the substrate; the fixed lens cone is provided with an axial chute, and one end of the fixed lens cone is provided with a laser light source. The lengthened inner lens cone is movably arranged in the fixed lens cone at a preset gap; a focusing lens is arranged at one end, close to the laser light source, of the lengthened inner lens cone; the driving mechanism is arranged on the base plate; the driving mechanism is connected with the lengthened inner lens cone through the adjusting mechanism and the axial sliding groove and drives the lengthened inner lens cone to move along the axial sliding groove. And the axial deviation angle between the lengthened inner lens cone and the fixed lens cone is reduced along with the increase of the length of the lengthened inner lens cone, so that the focusing precision is improved. The focusing device has the advantages that by lengthening the inner lens cone and simplifying the structures of the lengthened inner lens cone and the fixed lens cone, the stability of the focusing device is remarkably improved, and the problem of light spot shaking is solved.

The utility model provides a kind of composite filtering MBR membrane piece assembly, including pool body, support, the middle part of the inside of pool body is fixedly connected with support;The inside of the support is detachably connected with crossbeam by connecting piece, and the membrane piece is connected between the crossbeam;The membrane piece is composed of numerous membrane filaments.The utility model has the advantages that lifting beam, joint, movable head are integrated, and the lifting of movable head can be realized by practical hand wheel rotating screw rod, so as to realize the lifting of lifting beam, since membrane piece bottom is fixed, the tightness adjustment of membrane piece can be realized by pulling steel wire, after long time use, its surface will relax due to accumulation, gravity effect, such structure design can keep membrane piece with constant tension, solve the problem of shaking or accumulation caused by membrane filament relaxation due to long-term operation, prolong the life of membrane;When maintaining, without special tool and shutdown, manual rotation hand wheel second can complete the tensioning adjustment of all membranes.

The utility model discloses an electric valve and refrigeration equipment relates to refrigeration control technical field, wherein, electric valve includes valve body subassembly and valve element subassembly, valve body subassembly includes lower valve seat, upper valve seat and casing, and the upper valve seat and lower valve seat enclose and form valve cavity, and the other end enclose and form the installation cavity with casing, and the end part recessed with guide groove of upper valve seat to valve mouth, and the first intercommunication channel of intercommunication installation cavity and guide groove, valve element subassembly includes the valve element of installable activity in guide groove, and valve element has lower limit position and upper limit position, and the second intercommunication channel is arranged on valve element subassembly, through setting the first intercommunication channel and the second intercommunication channel of mutual cooperation between valve element subassembly and upper valve seat, through spacing structure, make valve element still can keep the air pressure intercommunication between installation cavity and valve cavity when in upper limit position, thereby effectively avoid the valve element dithering problem caused by the instantaneous pressure difference release of valve element separation upper valve seat in traditional structure.

The application discloses a kind of installation structure and installation method of automobile instrument panel crossbeam, wherein, automobile includes left A column inner plate, front wall upper baffle, right A column inner plate, front wall lower baffle and front floor connected in sequence, and the installation structure of automobile instrument panel crossbeam includes: instrument panel crossbeam is connected left A column inner plate, front wall upper baffle, right A column inner plate, front wall lower baffle and front floor respectively.The application is connected by the different structural members of multiple positions on automobile body respectively to instrument panel crossbeam, so as to improve the connection strength of instrument panel crossbeam and vehicle body, solve the problem that steering wheel will vibrate when automobile drives on some poor road, and guarantee the safety of vehicle personnel.

This invention discloses a dynamic interval elastic scaling method and system based on long-term series prediction. The method includes: collecting load time-series data of applications deployed in a container cloud platform and storing it in a time-series database; using a combined time-series prediction model based on the Transformer architecture and a Bi-LSTM time-series prediction model to perform long-term time-series prediction on the load time-series data; dynamically determining the scaling interval based on the predicted load; generating and executing a scaling strategy for application replicas in the container cloud platform, scaling up and allocating sufficient resources in advance before the actual increase in application load, thus ensuring the service quality of applications in the container cloud platform. This invention can effectively reduce the number of scaling operations, avoid window jitter caused by frequent scaling up and down, and ensure the stability of the container cloud cluster; effectively meet the resource requirements of applications and avoid application service quality instability caused by rapid scaling down.

This application relates to the field of hydraulic pump technology, specifically to an oil circuit on / off control device. The oil circuit on / off control device of this application includes a valve seat, a valve body, a valve core, a spring, and two electromagnets. The two electromagnets are located on the left and right sides of the valve seat, respectively. The valve body is fitted into the valve seat, and the valve core is installed in the valve body. Both ends of the valve core pass through the valve body and the valve seat, which are located within the electromagnet area. Springs are wound around both ends of the valve core within the valve seat. Pre-set connecting channels within the valve core precisely distribute oil flow to the radial holes of the valve body. When the electromagnets drive the valve core to move left and right, the connection and disconnection of the oil inlet and the target outlet are completed synchronously, eliminating the oil circuit interruption window of traditional serial valve opening and closing. This device integrates oil inlet distribution, outlet selection, and return oil management functions into a coaxially nested valve seat-valve body-valve core assembly, eliminating intersecting external pipelines, achieving high integration, and reducing the size of the device.

The application discloses a decoupling method for stabilizing a platform body relative to inertial space, which comprises the following steps: obtaining angular velocity components of the platform body on X p axis, Y p axis and Z p axis according to angular velocity output by a gyroscope installed on the platform body, and obtaining an angle and angular velocity of internal relative rotation of a four-axis inertial stabilization platform system; calculating a resultant rotation angular velocity ω p of the platform body on Z z axis, a resultant rotation angular velocity ω p1 of an inner frame on Y y axis, a resultant rotation angular velocity ω p2 of a middle frame on X x axis and a resultant rotation angular velocity ω p3 of an outer frame on Y yk′ axis according to the angular velocity components and the angle of the internal relative rotation, respectively. The application has the characteristics of minimum output energy under the condition that the platform body is stabilized relative to inertial space.

This invention relates to a wire feeding assembly, a wire saw unit, a wire cutting machine, and a method for controlling the wire feeding angle, belonging to the field of wire cutting machine technology. The wire feeding assembly of this invention includes a wire feeding mechanism and an angle adjustment mechanism. By setting the angle adjustment mechanism, the swing angle of the wire feeding guide wheel can be finely adjusted to follow the diameter changes on the take-up and untake-down rollers, ensuring that the wire feeding guide wheel is always within a preset position range. This effectively avoids the vibration problem during wire mesh operation and ensures that the wire feeding mechanism achieves high stability, low inertia, and low wire breakage rate during high-speed reciprocating operation, thereby improving cutting quality.

This invention provides an adaptive control method and vehicle for dynamically following a vehicle, aiming to solve the problems of follow-up interruption, poor control experience, and unsafe start-stop caused by signal obstruction in existing technologies. The method includes: concurrently receiving data from at least two spatially separated UWB ranging base stations; selecting the optimal ranging base station as the effective positioning source by comparing signal quality indicators; calculating the real-time spatial distance and relative orientation between the target and the vehicle based on its position information; dynamically adjusting control parameters according to the real-time spatial distance, including: a larger control dead zone as the distance is closer; a larger upper limit for linear velocity and a smaller upper limit for angular velocity as the distance is greater; and performing asymmetric limiting processing on acceleration before issuing commands to achieve the effect of gentle start-up and rapid braking. This application also provides a corresponding dynamically following vehicle. This application achieves highly reliable, smooth, and safe dynamic following through redundant positioning and adaptive control.

This invention discloses a method, system, and vehicle for controlling vehicle idling conditions. The control method includes the following steps: S1: Real-time acquisition of the vehicle's current driving parameters; determining whether the vehicle is in idling condition based on the current driving parameters; if yes, proceeding to step S2; otherwise, continuing to determine whether the vehicle is in idling condition. S2: Real-time acquisition of the engine's current intake air mass and the carbon canister's current desorption flow rate, and calculation of the current dimensionless factor parameters. S3: Determining the vehicle's current vibration condition based on the current dimensionless factor parameters and a preset vehicle vibration model; controlling the engine's current intake air mass and the carbon canister's current desorption flow rate based on the vehicle's current vibration condition, so that the vehicle's current vibration condition is at a critical or non-vibrating state. This solves the vibration caused by unstable engine combustion, increasing user comfort and experience.

This utility model belongs to the field of concrete strength testing technology, and in particular to a concrete strength testing device for highway bridge construction. It includes a rebound hammer and a support mechanism located outside the rebound hammer, with a replacement mechanism at its bottom. The support mechanism includes a support block fixedly connected to the outer wall of the rebound hammer. In this utility model, the support mechanism automatically triggers the linkage movement of the swing arm and compresses the spring when the roller contacts the concrete surface in advance. This process not only effectively absorbs the impact and vibration during operation but also actively and reliably presses the bottom of the rebound hammer stably and vertically against the concrete surface to be tested. This fundamentally solves the problem of instrument shaking and tilting caused by manual suspension, ensuring that the impact hammer always maintains an ideal vertical impact posture, thereby significantly reducing systematic measurement errors and significantly improving the accuracy, reliability, and overall efficiency of concrete strength rebound value testing.

The utility model relates to computer vision detection technical field, and disclose a kind of computer vision detection auxiliary device, including base and protective cover, the top of base is provided with mounting bracket, the outside of mounting bracket is provided with the screw rod rotating shaft of rotation connection with base top. This computer vision detection auxiliary device, by integrating shock absorption movement component in base bottom, device constructs the three-stage damping system of "hydraulic damping+spring buffer+guiding limit": hydraulic damper provides certain attenuation ability to high-frequency vibration, cooperate external buffer spring absorption certain low-frequency impact, make the vibration energy reduction that base transmits to camera, the precise guide structure of limit rod and screw rod rotating shaft controls the lateral displacement of bearing plate within small range, avoid the attitude deviation when moving, effectively solve the problem that image is shaken due to road bump, improve the practicability of device, convenient for staff use.

The utility model discloses a clothes airing machine capable of performing feedback control on the rotating speed of a motor, which comprises a main machine and an airing rod, a driving device is arranged in the main machine, and the driving device comprises the motor, a wire twisting disc for winding and unwinding a steel wire rope and a feedback controller; the motor controls the stranding disc to rotate; the stranding disc comprises an upper cover, a partition plate and a bottom plate, a first cavity for radially winding a steel wire rope is formed between the upper cover and the partition plate, and a second cavity for radially winding the steel wire rope is formed between the partition plate and the bottom plate; and the feedback controller comprises a roller with a wire slot and a speed sensor, and adopts a variable-diameter wire twisting disc to adjust the rotating speed of a motor for controlling the rotation of the wire twisting disc, so that the winding and unwinding speed of the steel wire rope is uniform, and the uniform lifting speed of the airing rod is further met.

The utility model discloses an impregnated paper drying device, which relates to the technical field of impregnated paper and comprises a base, a shell is mounted in the middle of the top end of the outer surface of the base, notches are formed in the left end and the right end of the outer surface of the shell, an oil storage tank is mounted at the rear end of the outer surface of the shell, and a plurality of groups of connecting blocks are mounted on the inner side of the outer surface of the oil storage tank. Heating rods are installed at the opposite ends of the multiple sets of connecting blocks, multiple sets of connecting pipes are installed on the outer surface of the oil storage tank, heating rollers are fixedly installed on the shaft surfaces, penetrating through the outer surface of the shell, of the connecting pipes, and the heat conduction oil circulation heating system is matched with the multiple sets of heating rollers which are staggered in a high-low mode, so that double-face uniform drying of impregnated paper is achieved; the heat efficiency is remarkably improved, an anti-sticking wear-resisting outer sleeve prevents paper from being stuck and wrinkled, the unique fan heat dissipation design accelerates drying and meanwhile avoids the problem of paper shaking caused by traditional hot air direct blowing, and the whole structure is compact, energy consumption is low, and maintenance is convenient and fast.