33results about How to "Reduce out of sync" patented technology

The invention relates to a horizontal-type high-speed fine grinding linear double-edge edge grinding machine for glass. A box body grinding wheel group arranging mechanism is installed on a machine tool body opening and closing mechanism, the front end and the back end of the box body grinding wheel group arranging mechanism are provided with the feeding end and the discharging end respectively, and the left end and the right end of the machine tool body opening and closing mechanism are provided with the fixed end and the moving end; a main transmission mechanism, a compressing frame mechanism, a compressing frame lifting mechanism and an electric cabinet control mechanism are arranged on the box body grinding wheel group arranging mechanism separately, a feeding and discharging guiding mechanism is arranged between the feeding end and the discharging end of the box body grinding wheel group arranging mechanism, and an automatic central bracket mechanism is arranged on the machine tool body opening and closing mechanism, located between the fixed end and the moving end and located in the middle of the box body grinding wheel group arranging mechanism; and a cooling water circulating system is provided with two ground water tanks, and the two ground water tanks are arranged at the feeding end and the discharging end separately and communicate with each other through a pipe fitting. According to the horizontal-type high-speed fine grinding linear double-edge edge grinding machine for the glass, the machining efficiency is high, the standby time is shortened, and meanwhile the grinding and polishing quality of the glass edge is improved.

The invention discloses a multi-steering-wheel cooperative control method for an omnidirectional mobile AGV. The multi-steering-wheel cooperative motion control comprises rotation speed control of a steering wheel driving motor and rotation angle position control of a steering motor. According to the target motion speed of an AGV body, the expected driving speed and deflection angle of each steering wheel are calculated through an inverse kinematics model, and then the driving speed is compensated by adopting a speed synchronization control method to obtain the actual control quantity of a steering wheel driving motor. According to the invention, the motion control problem of the multi-steering-wheel driving type omnidirectional mobile AGV is effectively solved, the AGV can accurately track a guide path, the internal force consumption between wheel sets can be reduced, the motion process is more coordinated, and the endurance time is prolonged.

The invention provides a camera module group, comprising a lens driving device, a lens group driven by the lens driving device and a photosensitive component faced to the lens. Whereinto, the lens driving device comprises a stator and a rotator. Several first conductors are set at one end face of the rotator in interval. The camera module group comprises at least a pulse generating device and a processing device for pulse signal connected with the pulse generating device. The pulse generating device can be connected with first conductors in current intermittently in the rotating process of stator. When the connection state between the pulse generating device and first conductors changes the pulse generating device generates pulse and transmits the pulse signal to the processing device for pulse signal for processing to obtain position information of rotator on the optical axial direction of lens group. The camera module group can know the position of lens group on the optical axial direction in time during the focusing process so that focusing time can be shortened effectively and step loss of lens driving device can be decreased. The invention also provides a portable electric device with the camera module group.

The embodiment of the invention provides a customized ringback tone platform system, a customized ringback tone resource allocation method and a device. According to the invention, customized ringback tone resources which are manufactured and released by CP can be stored by a cloud storage subsystem such that each customized ringback tone call server can share the customized ringback tone resources in the cloud storage subsystem. Instead of data synchronization between large amounts of ringtone repository and a customized ringback tone management server, data synchronization between the customized ringback tone management server and the cloud storage subsystem is only required. Thus, data out-of-sync possibility is minimized, and customized ringback tone play accuracy of customized ringback tone call servers can be raised effectively. Meanwhile, investment in software and hardware of the customized ringback tone platform system can be minimized effectively, and investment costs of the customized ringback tone platform system can be reduced. In addition, the invention also further provides a customized ringback tone resource allocation scheme used for reducing memory space and equipment processing capacity waste.

The invention discloses an air conditioner system and an out-of-step prevention control method and control device of an electronic expansion valve of the air conditioner system. The out-of-step prevention control method comprises the following steps that in the action process of the electronic expansion valve, the needed changing step number of the electronic expansion valve is acquired; whether the needed changing step number is smaller than preset minimum adjustment step number or not is judged; if the needed changing step number is smaller than the preset minimum adjustment step number, theelectronic expansion valve is forbidden to act, the needed changing step numbers are accumulated, when the accumulated step number is larger than or equal to the preset minimum adjustment step number, the electronic expansion valve is controlled to act, and the accumulated step number is subjected to zero clearing; and if the needed changing step number is larger than or equal to the preset minimum adjustment step number, the electronic expansion valve is directly controlled to act. By means of the control method, the electronic expansion valve can be finely adjusted according to the size ofthe needed changing step number of the electronic expansion valve, frequent action is not needed, the probability of out of step is greatly reduced, and the reliability of system running is improved.

The invention relates to a shiitake-mushroom slitting device for keeping the shiitake-mushroom shape. The shiitake-mushroom slitting device for keeping the shiitake-mushroom shape comprises a machineframe, a shiitake-mushroom positioning hole plate, a plurality of shiitake-mushroom-stem cutting mechanisms for cutting shiitake-mushroom stems and a plurality of shiitake-mushroom-cap cutting mechanisms for cutting shiitake-mushroom caps; the shiitake-mushroom positioning hole plate is detachably arranged at the upper end of a concave machine frame, and a plurality of holes for shiitake-mushroompassing through are evenly formed in the shiitake-mushroom positioning hole plate; the shiitake-mushroom-stem cutting mechanisms are located on the machine frame at the lower portion of the shiitake-mushroom positioning hole plate, the quantity of the shiitake-mushroom-stem cutting mechanisms corresponds to the quantity of the holes, and any shiitake-mushroom-stem cutting mechanism comprises a plurality of vertical long-strip blades symmetrically distributed relative to the centers of the shiitake-mushroom stems; knife edges of the long-strip blades horizontally face the centers of the holes,and knife backs of the long-strip blades are fixed on pushing blocks respectively; the pushing blocks horizontally reciprocate along guiding rails, and the shiitake-mushroom stems are not cut off; thepushing blocks are controlled by a horizontal stretching mechanism to move.

The invention discloses a heat treatment device for a torsion bar of a car transmission system. The device comprises a high-frequency heat treatment device, a motor and a transmission mechanism, wherein the transmission mechanism comprises a transmission wheel, a first carrier roller, a second carrier roller and belts; the motor is connected with the transmission wheel; the transmission wheel is connected to the first carrier roller and the second carrier roller respectively by the two belts; the first carrier roller and the second carrier roller are arranged above the transmission wheel and are arrayed in parallel so that a torsion bar workpiece can be conveniently placed and rotated; the motor is connected with a speed reducer so as to guarantee that the speed of the transmission mechanism is not too high and a spline part of the torsion bar workpiece is heated uniformly; the axis of a heat treatment induction coil of the high-frequency heat treatment device is parallel to the axes of the first carrier roller and the second carrier roller so that the spline part of the torsion bar workpiece can be conveniently stretched into the heat treatment induction coil to be heated uniformly and the quality of the torsion bar is improved.

The invention provides a method of preventing frame protocol (FP) frames from being out-of-frame. The method includes the steps that a receiver counts the number of the FP frames N_snd which are sent by a sender in the present period according to a preset statistical cycle and preset statistical granularity, a receiver successfully receives the number of the FP frames N_rcv, the statistical result is informed on the sender, the statistics granularity uses a base station, a community or a carrier wave as the statistical unit, the sender determines whether Iub interface blocking exists at the present according to the statistical result, the sender figures out the present packet loss rate according to the N_snd and the N_rcv corresponding to the blocking when the Iub interface blocking exists, random packet dropping is conduct according to the packet loss rate when data frames are sent. By adopting the method of preventing the FP frames from being out-of-frame, possibility of falling out step of the FP frames can be effectively reduced.

A 3D printer controller comprises a processor and a programmable logic device. The processor is used for receiving code data, generating movement block data based on the code data and sending the movement block data to the programmable logic device. The programmable logic device is used for receiving and temporally storing the movement block data, generating corresponding pulse signals based on the movement block data, and an S-shaped pulser is adopted as the programmable logic device. According to the 3D printer controller, the problem that in the prior art, only an MCU is adopted as master control, and consequently the printing precision is not high can be solved. The invention further discloses a 3D printer control method.

The invention provides a stepping motor driving device and a driving method, which perform drive control via monitoring a position relationship of an excitation stable point of a step motor and a rotor, thereby greatly reducing falling out of step, and can realize stable drive motion via torque control. An excitation phase control part (4) via calculating an excitation phase stable instruction making the excitation stable point in a stagger arrangement with the actual rotor position in a clockwise direction or an anti-clockwise direction, wherein the actual rotor position is obtained by a rotor position counter (7) when successive setting of excitation stable points makes rotor reach a rotor position indicated via utilizing position instructions of a controller (3), and outputs the excitation instructions corresponding to excitation phase set instructions to an electric motor driver (5), thereby controlling torque size and direction generated in the stepping motor (1).

An embodiment of the invention discloses a synchronization method and device, synchronization equipment and a system. The method applied to a first device comprises the following steps: synchronizingwith N second devices adjacent to the first device to obtain time signals of master time of the second devices respectively, wherein N is an integer not less than 2; locking and tracking the N time signals and forming N slave time; and according to the N slave time, correcting the master time of the first device. To begin with, after obtaining the time signals of the second devices, locking and tracking are carried out to form the slave time, thereby preventing the problem of being unable to synchronize or poor synchronization in the process of obtaining the time signals more than once or repeatedly; and then, the first device obtains and synchronizes the time signals of the plurality of adjacent second devices instead of upstream devices, thereby reducing the phenomenon of synchronizationerror accumulation due to synchronization between downstream devices and the upstream devices, and improving synchronization accuracy.

The invention discloses a host-identifier-based method for routing protocol supporting of terminal micro-mobility under a planar routing environment in an integrated network access subnetwork. The method comprises the steps: moving an access terminal to a new access router and registering a host-position relation for the access router; appointing an access router to an access network by the new access router according to a compatible Hash algorithm to update the host-position relation; updating an original host-position relation for an old access router by the appointed access router; and informing a source access router of the updated host-position relation by the old access router when the old access router receives data communication initiated by other access routers. A flooding mechanism is utilized among access routers so as to maintain a topological database among the routers, and a proper bottom routing protocol is utilized to maintain the routing accessibility among the access routers.

The embodiment of the invention provides a time stamp processing method and device, a terminal and a storage medium, the method is applied to a plug flow terminal, the method comprises the steps of: obtaining m frames of video data, wherein the m frames of video data respectively correspond to m display timestamps, and m is an integer greater than 1; encoding the m frames of video data to obtain mframes of encoded data respectively corresponding to the m frames of video data; adjusting a target display timestamp in the m display timestamps to obtain an adjusted target display timestamp; adjusting a target coding timestamp in the m coding timestamps to obtain an adjusted target coding timestamp; and sending m frames of encoded data, wherein the adjusted target display timestamp and the adjusted target encoding timestamp to a server. According to the technical scheme provided by the embodiment of the invention, the occurrence probability of audio and video asynchronization can be reduced.

The invention provides a bottle feeding transmission mechanism which comprises a bottle feeding platform, a bottle feeding push disc and a bottle feeding push disc drive shaft, wherein the bottle feeding push disc pushes bottles supplied by the bottle feeding platform into a bottle box on a bottle loading holder. The bottle feeding transmission mechanism further comprises a first speed reducer, a guide rail, a flat top chain arranged on the first speed reducer and a gear link mechanism, the bottles supplied by the bottle feeding platform are conveyed to the guide rail through the flat top chain driven by the first speed reducer, and the motion of the bottle feeding push disc drive shaft is achieved through the gear link mechanism. The bottle feeding transmission mechanism is applied to a glass bottle washing machine, can effectively avoid the step-falling-out phenomenon, enables the whole system to be more stable and can effectively reduce power consumption by using the gear link mechanism.

The invention provides a method of preventing frame protocol (FP) frames from being out-of-frame. The method includes the steps that a receiver counts the number of the FP frames N_snd which are sent by a sender in the present period according to a preset statistical cycle and preset statistical granularity, a receiver successfully receives the number of the FP frames N_rcv, the statistical result is informed on the sender, the statistics granularity uses a base station, a community or a carrier wave as the statistical unit, the sender determines whether Iub interface blocking exists at the present according to the statistical result, the sender figures out the present packet loss rate according to the N_snd and the N_rcv corresponding to the blocking when the Iub interface blocking exists, random packet dropping is conduct according to the packet loss rate when data frames are sent. By adopting the method of preventing the FP frames from being out-of-frame, possibility of falling out step of the FP frames can be effectively reduced.

The invention discloses an air conditioner system and an out-of-step prevention control method and control device of an electronic expansion valve of the air conditioner system. The out-of-step prevention control method comprises the following steps that in the action process of the electronic expansion valve, the needed changing step number of the electronic expansion valve is acquired; whether the needed changing step number is smaller than preset minimum adjustment step number or not is judged; if the needed changing step number is smaller than the preset minimum adjustment step number, theelectronic expansion valve is forbidden to act, the needed changing step numbers are accumulated, when the accumulated step number is larger than or equal to the preset minimum adjustment step number, the electronic expansion valve is controlled to act, and the accumulated step number is subjected to zero clearing; and if the needed changing step number is larger than or equal to the preset minimum adjustment step number, the electronic expansion valve is directly controlled to act. By means of the control method, the electronic expansion valve can be finely adjusted according to the size ofthe needed changing step number of the electronic expansion valve, frequent action is not needed, the probability of out of step is greatly reduced, and the reliability of system running is improved.

The invention discloses a metal profile parallel roller straightening machine, and relates to the technical field of metal profile machining, the metal profile parallel roller straightening machine comprises a placing frame, a feeding limiting assembly, a power conveying assembly, a driving assembly, a profile straightening mechanism and a straightening fixing assembly, and the feeding limiting assembly and the power conveying assembly are both arranged at one end of the outer side wall of the placing frame; the driving assembly is arranged in the placing frame, the number of the sectional material straightening mechanisms is two, the two sectional material straightening mechanisms are movably arranged on the outer side wall of the placing frame, the straightening fixing assembly is arranged in the placing frame, and the working end of the straightening fixing assembly corresponds to the two sectional material straightening mechanisms; the problems that in the prior art, due to the fact that the metal profiles are long and different in specification, machining equipment is different in size, when the metal profiles enter a straightening machine and move into the machining equipment, too many positions of the metal profiles are suspended and shake, and the straightening effect of the metal profiles is poor are solved.

The invention discloses a method and device for controlling self-learning of a stepping motor and belongs to the technical field of automobile electronic control. The method includes: determining first step number and an out-of-step protection value of the self-learning, and setting total step number of the self-learning according to the determined first step number and the out-of-step protection value of the self-learning; and controlling the self-learning of the stepping motor according the set total step number of the self-learning. The method and device for controlling the self-learning of the stepping motor controls the self-learning through the total step number of the self-learning set according to the first step number and the out-of-step protection value, thereby guaranteeing that the stepping motor moves to an off-position when the self-learning is ended, reducing out-of-step of the stepping motor, and improving idle speed control quality. Simultaneously, the method and device for controlling the self-learning of the stepping motor controls the stepping motor to perform self-learning by adopting a stepping preset step-back delayed preset time mode, reduces stepping speed of the stepping motor when the stepping motor is close to the off-position, can effectively prevent the stepping motor from rebounding, and prolongs service life of the stepping motor.

The invention provides a double-power-source electric drive assembly with a load balancing device, which can expand the torque range and the rotating speed range covered by output of the electric drive assembly, can also improve the control stability of an electric automobile and ensure the straight driving stability of the electric automobile. The double-power-source electric drive assembly comprises the load balancing device, so that the load torque difference transmitted to motors on the two sides by wheels can be reduced when the vehicle runs straightly, and wheel desynchrony caused by therotating speed difference of the motors on the two sides can also be reduced. When torque vector control is carried out on vehicle steering, the output torque difference of the motors on the two sides can be increased, the yawing couple torque is rapidly generated to prevent the sideslip phenomenon which is difficult to control, and the control stability of the vehicle is improved.

The invention belongs to control methods for driving mechanisms of a nuclear power station, and concretely relates to a control method for a control rod driving mechanism (CRDM) of a nuclear power station. The control method comprises the following steps: (1) designing a set of independent control and adjusting circuit and monitoring circuit for a coil of each driving mechanism; (2) directly distributing control commands of CRDM to the control and adjusting circuit of each coil; (3) after the control and adjusting circuit of each coil receives the control commands, adjusting the work current of the coil according to the electrical parameters of the corresponding coil; and (4) properly adjusting the parameters of the control and adjusting circuit of each coil according to practical situations, so as to further enhance the adaptability. The advantages comprise that the method employs independent coil control, one set of the main circuit only controls one coil of the driving mechanism, and the main circuit is designed to have the adjusting capability, thereby adapting to the operation requirements of each driving mechanism.

The invention discloses a heat treatment device for a torsion bar of a car transmission system. The device comprises a high-frequency heat treatment device, a motor and a transmission mechanism, wherein the transmission mechanism comprises a transmission wheel, a first carrier roller, a second carrier roller and belts; the motor is connected with the transmission wheel; the transmission wheel is connected to the first carrier roller and the second carrier roller respectively by the two belts; the first carrier roller and the second carrier roller are arranged above the transmission wheel and are arrayed in parallel so that a torsion bar workpiece can be conveniently placed and rotated; the motor is connected with a speed reducer so as to guarantee that the speed of the transmission mechanism is not too high and a spline part of the torsion bar workpiece is heated uniformly; the axis of a heat treatment induction coil of the high-frequency heat treatment device is parallel to the axes of the first carrier roller and the second carrier roller so that the spline part of the torsion bar workpiece can be conveniently stretched into the heat treatment induction coil to be heated uniformly and the quality of the torsion bar is improved.

The invention discloses an elevator car roof safety window device. The elevator car roof safety window device comprises a safety window arranged on a car roof. A safety window body is arranged insidethe safety window and further comprises a window main body and a window frame. One side edge of the window main body and the window frame are hinged. The window main body is further provided with a lock tongue structure, and the window frame is provided with a lock bracket structure. The lock tongue structure comprises a lock box and a triangulation chain which are fixed to the window main body through bolts. A locking plate, a spring and a lock tongue are arranged inside the lock box. One end of the locking plate and the triangulation chain are hinged, and the other end of the locking plate is connected with the lock tongue through the spring. The lock tongue is fixedly provided with two touch rods. The lock bracket structure comprises a lock carrier fixed to the window frame. An electrical switch is arranged inside the lock carrier and is further connected with an elevator control system. A sound insulation layer is arranged on the edge of the window frame. The lock box is provided with a light reflecting layer. The elevator car roof safety window device provided by the invention is easy to install and convenient to open.

The invention provides a control method and a control device of a stepping motor, a matcher and a plasma processing device. The control method includes: acquiring the algorithm rotation direction of a current control period of the stepping motor; acquiring preset control period dimensions and the algorithm rotation direction of a historical control period based on the preset control period dimensions; and acquiring the actual rotation direction of the stepping motor according to the algorithm rotation direction of the current control period, the algorithm rotation direction of the historical control period and the preset control period dimensions, and adopting the actual rotation direction to control the stepping motor to rotate. The control method can reduce forward rotation and reverse rotation switching times of the stepping motor, accordingly reduces phenomena of step throw and step out of the stepping motor, and service life of the stepping motor is prolonged.

The invention provides a camera module group, comprising a lens driving device, a lens group driven by the lens driving device and a photosensitive component faced to the lens. Whereinto, the lens driving device comprises a stator and a rotator. Several first conductors are set at one end face of the rotator in interval. The camera module group comprises at least a pulse generating device and a processing device for pulse signal connected with the pulse generating device. The pulse generating device can be connected with first conductors in current intermittently in the rotating process of stator. When the connection state between the pulse generating device and first conductors changes the pulse generating device generates pulse and transmits the pulse signal to the processing device for pulse signal for processing to obtain position information of rotator on the optical axial direction of lens group. The camera module group can know the position of lens group on the optical axial direction in time during the focusing process so that focusing time can be shortened effectively and step loss of lens driving device can be decreased. The invention also provides a portable electric device with the camera module group.

The invention is used for solving the issue that is the actual recorded frame rate is lower than the preset frame rate so as to generate asynchronization between audio and video signals, which is caused by dropping down of sensor frame rate or the interrupt processing delay of timer. The method comprise: the total frame amounts of video files and the accumulated recording time are recorded; when making each interrupt process, according to the preset interrupt frequency, the accumulated recording time at time of triggering the interrupt and the total frame amounts of images, determining the frame amounts of images that should be written into the video file; according to the frame amounts of images that should be written into the video file, getting the relevant frame image data and writingit into the video file, and the quitting the interrupt process.

Disclosed in the embodiments of the present disclosure are a synchronization method, a synchronization device, a synchronization apparatus and a system. The method applied in a first device comprises: synchronizing the first device with N second devices adjacent to the first device to obtain a time signal of a master time of each of the second devices, N being an integer not less than 2; locking and tracking said N time signals, to form N slave times; and calibrating, according to the N slave times, the master time of the first device. First, after the time signals of the second devices are obtained, the time signals will be locked and tracked to form slave times, thus avoiding the problem that synchronization cannot be achieved when acquiring time signals repeatedly or multiple times or the synchronization effects are poor. Second, the first device obtains the time signals of a plurality of adjacent second devices to synchronize with, rather than to be synchronized with an upstream device, thereby reducing the accumulation of synchronization errors caused by the synchronization of the downstream device and the upstream device, improving synchronization accuracy.