661 results about "Motor activation" patented technology

The invention relates to the technical field of self-adaptive starting, and discloses a self-adaptive starting method and system based on voltage and current monitoring, and the method comprises the steps that an MCU (Microprogrammed Control Unit) triggers an auxiliary silicon controlled rectifier and a main silicon controlled rectifier through preset starting logic to start a motor, and carries out the high-frequency sampling of current and voltage data in real time; once starting failure is detected, short-time voltage sequences and short-time current sequences before and after a failure occurrence point can be automatically captured and stored. Then, key features are extracted from the sequences, and failure causes are determined through decision tree model analysis. And based on the analysis result and the current retry times, the MCU outputs a corresponding retry strategy to ensure that the motor can be successfully started or enter a safety mode. Thus, the reliability of motor starting is improved, subsequent fault diagnosis is supported through detailed data recording, and the maintainability and safety of the system are greatly improved.

A system for providing inrush current limiting for induction motor starting. The system utilizes a pre-start controller to initialize operation of a controller including multiple switches for controlling the voltage delivered to a motor having multiple phases. The pre-start controller activates each switch and determines whether a phase current flowing through the switches satisfies a threshold current. The switches are deactivated a phase current satisfies the threshold current. The pre-start controller determines an activation order for each phase and orders phases having higher phase currents higher in the order than lower phase currents, and determines an activation timing. Based on whether the highest phase current is positive or negative, the pre-start controller then activates, using a voltage at a corresponding angle and based on the activation order and activation timing, the phases to de-saturate the flux generated by the phase currents, thereby limiting an inrush current provided to the motor.

The utility model discloses an electric pedal sand spraying testing device. The technical scheme is characterized in that the electric pedal sand spraying testing device comprises a box body; an upper plate and a lower plate are arranged in the box body; a fixing block is arranged below the lower plate; a motor is arranged on the fixed block; a driving rod and a driven rod are further arranged on the fixed block; the driving rod and the driven rod are respectively connected with the fixed block and the connecting rod; a pedal body is arranged on the connecting rod; a sediment box is arranged in the box body; a pump body is arranged in the sediment box; the pump body is connected with a pipeline, the motor is started to drive the driving rod to rotate, the driving rod rotates to drive the connecting rod to move, and after the connecting rod moves, the pedal body can stretch out and retract to simulate stretching out and retracting of the pedal body on the road surface. After the pump body is started, silt is sprayed to the pedal body, the motor, the driving rod, the driven rod and the connecting rod through a pipeline, so that silt prevention detection is carried out on the motor and the pedal body; the sand-proof performance of the automobile pedal is convenient to detect.

The utility model relates to the technical field of bolt tightening equipment, in particular to a bolt tightening mechanism. The mechanism comprises a driving mechanism, a rotating part, a protective sleeve and an assembling auxiliary part, wherein the driving mechanism consists of a motor and a rotating shaft; one end of the rotating piece is fixed with the rotating shaft, and the other end is provided with a limiting hole matched with the bolt; the protective sleeve surrounds the rotating piece and the rotating shaft and is detachably connected with the driving mechanism. The rotating part further comprises an outer sleeve, a guide plate and a clamping assembly, flexible adjustment of the clamping assembly is achieved through a guide through groove and an elastic part, the rotating part can be matched with various special-shaped bolt heads, the assembling auxiliary part comprises an auxiliary part body and a shaft hole, the far end of the shaft hole can contain a nut and can be matched with a bolt, and the bolt can be driven to rotate when the motor is started. And the bolt is screwed on the nut. The bolt tightening device achieves the technical effects of improving the bolt tightening efficiency and adapting to various bolt heads.

The invention discloses a nail gun. The nail gun comprises a shell; the motor is arranged in the shell; the percussion assembly is arranged in a nailing period, can move from an initial position to a percussion position so as to knock out a nail to a workpiece, and can move from the percussion position to the initial position; the at least one light-emitting device is arranged on the shell; the first control circuit is configured to independently control the light-emitting device to work at least when the motor is not started; the light-emitting control switch is connected with the first control circuit; and the controller controls operation of the motor, and the controller is configured to receive a signal indicating that the motor is powered on and the light-emitting control switch is triggered and control starting of the motor.

The invention discloses a motor air cooling system, a system using method and a motor, and relates to the technical field of motor cooling. The invention aims to solve many defects existing in a traditional single cooling mode. A plurality of inner blades and a plurality of outer blades are evenly fixed to the inner wall and the outer wall of a sleeve in the circumferential direction and are close to one end of the sleeve. The axial length of the sleeve is larger than that of a permanent magnet of the motor. When the motor is started, the rotating shaft can drive the sleeve to rotate, then the multiple blades of the motor air cooling system drive air to flow into the motor from the air inlet, multiple air channels are formed in the motor, the air flows out from the air outlet, and cooling of the motor is achieved.

A shoe cleaning mat including a housing assembly, a cleaning assembly and an electronic assembly. The housing assembly includes a housing having an opening in a top wall thereof. The cleaning assembly includes brushes equidistantly disposed within the housing. The brushes are connected therebetween through a shaft. The electronic assembly includes a motor, a battery and a sensor. The battery provides power to the motor and the sensor. The sensor is attached to a periphery of the opening of the housing. The motor is actuated when the sensor detects motion. The motor is actuated to move the movable base moving the brushes to clean a shoe introduced through the opening of the housing.

The invention relates to the technical field of insulating rod auxiliary equipment, and particularly discloses an insulating rod auxiliary fastening method and device. The method comprises the steps that a rotating handle on the insulating rod is clamped through a clamping device, and the clamping device comprises a clamping assembly used for clamping the rotating handle, a transmission assembly used for driving the rotating handle to rotate and an output motor used for controlling starting and stopping of the transmission assembly; controlling an output motor to start, and acquiring a real-time current value of the output motor; when the real-time current value is larger than or equal to the preset current value, the output motor is controlled to be According to the scheme, the clamping device can clamp the rotating handle and drive the rotating handle to rotate, the operation burden of a worker is reduced, the risk that the insulating rod slips out of the hand is reduced, meanwhile, whether the conductor end is clamped by the insulating rod or not is judged by obtaining the real-time current value, the accuracy of judging whether the insulating rod is clamped or not by the worker can be improved, and the working efficiency is improved. The problems that in the operation process, the risk that the insulating rod slips out of the hand is high and the accuracy of judging whether the insulating rod is clamped is low are solved.

A motorized roller blade device for automatically urging rollerblades along a support surface includes a rollerblade and a pair of motors each integrated into a respective one of a plurality of rollers of the rollerblade. Each of the pair of motors rotates the respective roller when the pair of motors is turned on to facilitate the rollerblade to be driven along the support surface. A control unit is mounted to the boot for actuating or de-actuating each of the pair of motors. A remote control is held by the user of the rollerblade and the remote control is in remote communication with the control unit for remotely actuating or de-actuating the pair of motors to facilitate the user to remotely control the pair of motors.

The present invention relates to a brushless motor controller fault diagnosis method, comprising the following steps: Step S1, diagnosing whether inverter circuits Q1, Q2, Q3, Q4, Q5, and Q6 are short-circuited; Step S2, diagnosing whether inverter circuit Q1 is controllable; Step S3, diagnosing whether inverter circuit Q3 is controllable; Step S4, diagnosing whether inverter circuit Q5 is controllable; Step S5, diagnosing whether inverter circuit Q2 is controllable and whether motor phase lines U and V are open-circuited; Step S6, diagnosing whether inverter circuit Q4 is controllable and whether motor phase lines V and W are open-circuited; Step S7, diagnosing whether inverter circuit Q6 is controllable and whether motor phase lines U and W are open-circuited. The present invention also provides a diagnostic device for implementing the diagnostic method. The diagnostic method proposed in the present invention completes the diagnosis before the motor is started. Regarding detecting whether the MOSFET is short-circuited, the present invention does not cause impact on the MOSFET, reduces motor vibration, and improves system reliability and diagnostic stability.

The utility model belongs to the technical field of valve pressure testing equipment, in particular to a valve pressure testing machine, which comprises an equipment main body, a control panel, a first motor and a water storage tank, the control panel is arranged at the side end of the equipment main body, the first motor is arranged at the side end of the equipment main body, and the water storage tank is arranged at the same side of the equipment main body. According to the utility model, the sealing test mechanism, the screw rod, the ball movable cover, the main shaft position control disc and the limiting rod are arranged, a valve structure to be tested is placed between the sealing test mechanism and the ball movable cover after the water storage tank is filled with water, the second motor is started at the moment, and the second motor drives the ball movable cover to move while driving the screw rod to rotate; when a valve structure is clamped at the side end of the sealing test mechanism, gas is injected into the valve through the gas injection port, at the moment, the first motor is started and drives the main shaft position control disc to rotate through the driving gear, and after the sealing test mechanism sinks underwater, an operator judges the sealing performance of the valve by observing the floating condition of bubbles.

The invention relates to the technical field of gun trigger locks, in particular to a gun trigger lock, in a locking state, a user uses fingerprints set in a fingerprint module on a circuit board by himself to unlock the lock, in the locking state, a supporting rod of a cam faces downwards and is not in contact with a spring bolt piece, and in the locking state, the supporting rod of the cam is not in contact with the spring bolt piece. The lock tongue head of the lock tongue piece extends into the lock hook side clamping groove of the lock hook piece, so that the lock hook piece cannot be pulled out, connection of the upper shell and the lower shell of the lock is achieved, a locked object located between the upper shell and the lower shell cannot be separated out, and the locking function is achieved. In the unlocking state, after fingerprint recognition succeeds, the motor is started, the cam is driven to rotate, the first matching inclined face on the cam abuts against the second matching inclined face on the vertical push plate, the spring bolt piece is driven to be away from the lock hook side clamping groove, the spring bolt is made to be separated from the lock hook side clamping groove, separation of the upper shell and the lower shell is achieved, and the gun trigger lock is opened.

The invention relates to the technical field of motor control, in particular to an electric bed motor control method and an electric bed, and the method comprises the steps: sampling a current ripple signal, carrying out the spectrum analysis of the current ripple signal, extracting a load resonant frequency, generating an anti-phase harmonic current, and injecting the anti-phase harmonic current into a motor winding at the starting moment of a motor; damping harmonic waves are injected into the motor winding in the motor pre-braking stage, and phase-synchronous reverse currents are injected into the motor winding in the motor main braking stage. Low-impact control over starting and stopping of the electric bed is achieved through an electromechanical energy hedging mechanism, and an existing electric bed electromechanical framework is compatible; at the starting moment of the motor, high-frequency resonance excitation force can be neutralized by injecting anti-phase harmonic current; kinetic energy is dissipated through damping harmonic waves in the pre-braking stage, and current reverse locking is applied in the main braking stage, so that the in-place residual amplitude approaches zero; and dynamic tuning control parameters are analyzed based on a real-time spectrum, so that the start-stop time under a variable load is relatively constant, and the problems of light-load overshoot and heavy-load hysteresis are solved.

The invention discloses a propulsion device for a ship, and belongs to the field of ship propulsion. Comprising a shell, and a driving mechanism is arranged in the shell; a water cooling mechanism is embedded in the lower surface of the shell; a propelling mechanism is arranged on the right side of the shell; a guide mechanism is arranged at the position, located above the driving mechanism, in the shell; the driving mechanism comprises a shaft rod, the upper surface of the shaft rod is fixedly connected with a connecting rod, and two movable grooves are formed in the upper surface of the connecting rod; in the extending or shortening process of the electric push rod, one of the two motors is located on the left and the other is located on the right, and the propelling mechanism is controlled to be started and the ship is controlled to be propelled by controlling the motor on the right to be started; by means of the mode, the electric push rod only needs to contract and is matched with two motors for alternate use, and the problem that in the prior art, the motors are prone to being damaged in the long-term operation state due to single-motor driving propelling can be solved.

The invention discloses a locked-rotor current self-protection system of an automobile seat motor, and relates to the technical field of locked-rotor protection of automobile seat motors. Comprising a current sensor module which is used for collecting a working current signal of a motor; the signal conditioning circuit module processes a signal output from the current sensor, amplifies a weak signal based on an amplifier, and removes a high-frequency noise component based on a low-pass filter; and the microcontroller module is used for receiving the digital signal from the signal conditioning circuit and analyzing and processing the data according to a preset program algorithm. According to the method, the locked-rotor state is judged by adopting double indexes based on the current change rate and the absolute value, and compared with a traditional single threshold value method, the method has higher accuracy and reliability; the transient current fluctuation influence caused by high current impact at the starting moment of the motor and other non-locked-rotor factors is avoided, and the false alarm rate is effectively reduced.

Some electric hair cutting devices have a stationary blade, a reciprocating blade, and an oscillating motor. Oscillating motors include pivot motors and linear motors. Both motors have a stator, an armature and at least one spring. The armature drives a load such as the reciprocating blade. The armature, the spring and the load have a mechanical resonant frequency. An H-bridge is supplied with pulse width modulated (PWM) signals from a controller and converts direct current from a battery to alternating current having the frequency of the PWM signals. The controller measures the mechanical resonant frequency when power to the motor is turned off and the armature continues to oscillate due to stored energy. The controller adjusts the frequency of the PWM signals to the measured mechanical resonant frequency and stores it in a memory for use the next time the motor is turned on.

The utility model discloses a medicine packaging device with accurate quantification, which relates to the technical field of medicine processing and comprises a device body, a sealing mechanism is arranged below the outer surface of the device body and comprises a support, a motor is mounted on one side of the bottom of the support, and the output end of the motor is connected with a half gear. One side of the top of the support is connected with a torsion spring shaft which is sleeved with a first gear and a second gear. Through the arrangement of the sealing mechanism, after the motor is started, the output end drives the half gear to continuously rotate at a constant speed, a tedious positive and negative rotation control circuit and a valve pipeline are not needed, and teeth of the half gear are in meshing transmission when corresponding to the first gear, so that the first gear drives the torsion spring shaft and the second gear to rotate; the second gear is meshed with the two racks after rotating, so that the first clamping plate, the linkage plate and the second clamping plate move in opposite directions, and the two heat sealing blocks are close to each other to seal a packaging bag; the structure and the control circuit are simple, cost is low, and packaging bags can be sealed conveniently.

The utility model relates to the technical field of loudspeakers, and discloses a multichannel loudspeaker, which comprises a support base, the periphery of the bottom end of the support base is uniformly provided with bottom side mounting grooves, the bottom side mounting grooves are internally provided with moving wheels, the top of the support base is provided with an orientation adjusting assembly, and the orientation adjusting assembly is provided with an orientation adjusting groove. A direction adjusting assembly is arranged at the top end of the supporting base, a loudspeaker main body is arranged on the direction adjusting assembly, an outer side protection assembly is arranged on the outer side of the loudspeaker main body, and a push handle is arranged on the side edge of the supporting base. A limiting mounting groove in the direction adjusting assembly can provide supporting and limiting for the loudspeaker body, a user can start a driving motor, the driving motor drives a supporting connecting plate to rotate through a rotating connecting column, and therefore the direction of the loudspeaker body stably clamped on the supporting connecting plate can be adjusted more conveniently; the playing direction can be quickly and conveniently adjusted, and the operation is more flexible.

The utility model relates to the technical field of viscosity detection, and discloses a PET film glue viscosity detection automation controller, which comprises a controller body and a stirring assembly, the stirring assembly comprises a fixing plate and a first motor, through the stirring assembly, the first motor is started, the output end of the first motor drives a transmission rod to rotate, and the first motor is driven to rotate. Due to the fact that one end of the rack plate is fixedly connected with the supporting plate, the top of the supporting plate is provided with the second motor, when the first motor drives the supporting plate to move to a proper height, the second motor is started, and the rack plate is driven to move horizontally. The output end drives the stirring rod to rotate, and the stirring blades fixedly connected to the circumferential surface of the stirring rod rotate along with the stirring rod to stir glue, so that various components in the glue are fully mixed through stirring, inconsistent viscosity caused by component sedimentation or local concentration change is prevented, and the accuracy of a detection result is ensured.

The invention provides an anti-interference serial port communication system and a working method thereof, and the method comprises the steps: obtaining a start-stop control signal of a motor, obtaining a communication interruption duration, and taking a moment when the start-stop control signal is obtained as a starting moment of a communication interruption period; caching the communication data to be sent to a preset buffer during communication interruption; judging whether a communication interruption duration is reached or not, and if so, sequentially sending the data cached by the buffer in sequence; wherein the step of obtaining the start-stop control signal of the motor comprises the step of obtaining the start-stop control signal output by the motor controller to the motor driving circuit. The invention also provides an anti-interference serial port communication system for realizing the method. According to the invention, the controller can be prevented from sequentially sending data when the motor is started or stopped, so that the influence of electromagnetic interference formed by a large current peak on the data sent by the controller is avoided.

The invention discloses a motor sampling current bias calibration method and device, electronic equipment and a storage medium, and belongs to the technical field of permanent magnet synchronous motor control. The method comprises the following steps: sampling a current signal of a motor before the motor is started to obtain a first sampling current bias; when the motor is started and is in a target state, the current signal of the motor is sampled to obtain a second sampling current bias, and the target state is that a three-phase upper bridge arm power device of the motor is switched on and a three-phase lower bridge arm device of the motor is switched off; determining an offset threshold value of the current signal of the motor; according to the first sampling current bias, the second sampling current bias and an offset threshold value, whether current sampling offset happens to the motor or not is judged; according to the technical scheme of the invention, under the condition that the current sampling offset of the motor occurs, the first sampling current bias is adjusted to obtain the target sampling current of the motor, so that the sampling current of the motor is closer to a real value, the current of the motor is dynamically calibrated in real time, the bias error is reduced, and the accuracy of motor control is improved.

This invention discloses a dual-variable symmetrical injection modulation method for a two-phase permanent magnet synchronous motor, belonging to the field of motor drive and control technology. The method includes the following steps: S1, setting motor start-up logic and soft-start parameters; S2, generating two-phase orthogonal line voltage commands; S3, dual-variable symmetrical injection; S4, PWM comparator register mapping and output; S5, periodic execution. This method requires no modification to the hardware topology of a standard three-phase voltage source inverter or the addition of additional circuit components, and can be directly deployed on existing mature hardware platforms. This allows the same three-phase inverter to be used to drive both three-phase and two-phase motors, achieving hardware platform reuse and standardization, significantly reducing system development and bill of materials costs, resulting in low hardware cost and strong versatility.

The utility model provides an FCT overturning test device, and relates to the technical field of test devices. According to the FCT overturning test equipment, when the transmission motor is started, the output end of the transmission motor drives the rotating block to rotate, when the rotating block rotates, the moving block rotationally connected with the rotating block can perform circular motion under the driving of the rotating block, and meanwhile, the moving block slides in the limiting ring; the limiting ring drives the rack to do linear motion along the fixing block, due to the fact that the rack is meshed with the gear, the linear motion of the rack drives the gear to rotate, and then the overturning base plate fixed to the gear is driven to overturn around a rotating shaft of the gear; the overturning base plate is rotationally connected with the second supporting block through the rotating shaft, a second limiting rod in a limiting groove formed in the rotating shaft plays a role in limiting excessive rotation of the rotating shaft, and it is guaranteed that the overturning action is conducted stably and accurately.

The utility model discloses a kind of for building decoration tool's cleaning device, it is related to cleaning device technical field.The utility model includes cleaning tank, motor is fixedly connected in cleaning tank inner wall, motor top output end is fixedly connected with rotating plate by coupling, the rotating plate top is fixedly connected with several agitating blocks, and the agitating block is annular array with rotating plate as center.The utility model is through setting spoiler, specifically is motor starting driving rotating plate rotation, then again through rotating plate rotation to drive agitating block rotation, when agitating block rotation, inside water flow rotation will be stirred, when water flow rotation, it will impact on spoiler, so that the direction of water flow changes, causes water flow to appear disorder, then again through the friction between the water flow of disorder and tool to clean, simultaneously make that cleaning fluid can evenly distribute on tool surface, improve work efficiency, realize the uniform cleaning of tool.

The invention discloses a steel rail grinding wagon grinding control method and system, and belongs to the technical field of railway maintenance automation control. In order to solve the problems that an existing medium-sized steel rail grinding wagon is inaccurate in initial grinding positioning, prone to generating blue belts, poor in grinding angle fixing adaptability, large in multi-motor starting current impact and lack of effective emergency processing capacity, the method comprises the steps that an operation instruction and grinding parameters are received through a man-machine interaction interface; target positions of the polishing mechanism in all the running axial directions are calculated through a preset mathematical model; the grinding mechanism is controlled to move to the target position, and the grinding mechanism is started to start grinding operation; in the walking process of the grinding mechanism, synchronous start-stop and lifting control is conducted on the steel rail grinding unit according to the advancing distance fed back by the wheel set encoder in real time; and the output torque of the grinding motor and the traveling speed of the grinding wagon are monitored in real time, the position of the grinding mechanism is dynamically adjusted according to the monitoring result, and the traveling power of the grinding wagon is dynamically adjusted. The device is used for polishing steel rails of railways and subways.

The utility model discloses a stainless steel tube axis flatness detection bench comprising a base plate, the upper part of the base plate is provided with a mounting seat, the interior of the mounting seat is provided with a sliding groove, the interior of the sliding groove is provided with a second screw rod, and the side surface of the second screw rod extends to the exterior of the mounting seat and is provided with a second motor; and a sliding block is arranged on the surface of the second screw rod. During detection, a stainless steel tube is mounted in the three-jaw chuck, and the first motor is started to drive the movable seat to move and contact with the stainless steel tube, so that the stainless steel tubes of different models can be fixed, the adjusting rod is rotated, and the height of the telescopic column is adjusted, so that the detection contact is in contact with the surface of the stainless steel tube; a second motor drives a second screw rod to rotate, so that a sliding block drives a detection contact to transversely move on the surface of the stainless steel pipe, the detection contact can generate a detection curve according to a moving route, when the detection contact passes through a concave-convex place, the curve changes, and the detection error is small.

The utility model belongs to the technical field of metal profile machining equipment, and discloses a cutting table for metal profile machining, which comprises a machining table, supporting legs are fixedly mounted at four corners of the bottom end of the machining table respectively, and lifting plates are movably sleeved at the left end and the right end of the interior of the machining table respectively. The number of the lifting plates is two, and the lifting plates are symmetrical about the center of the machining table. By arranging the lifting plate, the rotating plate, the round rod, the gear and the tooth plate, when the driving motor is started, the threaded rod rotates, under the action of the threaded rod, the tooth plate moves, and due to the fact that the tooth plate is connected with the gear in a meshed mode, the gear drives the rotating plate to rotate through the round shaft under the action of the tooth plate. And therefore, the left end and the right end of the rotating plate generate thrust on the two round rods correspondingly, the two round rods are pushed to drive the lifting plate to move in the opposite directions correspondingly, and metal profiles can be cut at different angles.

The utility model discloses a steering wheel angle sensor environment endurance test device comprising a pedestal, a control system box body and a computer, the top end of the pedestal is fixedly provided with a rack, the bottom end of the rack is fixedly provided with a servo motor, and the top end of the rack is movably embedded with a rotating shaft; a weather-proof belt is arranged on the outer sides of the rotating shaft and the output end of the servo motor in a surrounding mode, and a belt tensioner is movably embedded in the top end of the rack. When the detection device is used, the steering wheel angle sensor to be detected is installed on the product carrier, then the servo motor is started to drive all the rotating shafts to rotate through the weather-proof belt, so that the steering wheel angle sensor is detected, and detection data is transmitted to the interior of the computer for analysis. Meanwhile, the control system box body is used for controlling the detection process, a plurality of steering wheel angle sensors can be tested through a plurality of rotating shafts and a product carrier during use, and differences of individual data can be compared through a computer.