1210 results about "Motor activation" patented technology

An electronic starting switch assembly and control methods for a dryer having a split-phase induction motor. The assembly comprises a microcontroller unit (MCU) configured to execute a control method that dynamically manages the motor's operation by monitoring the forward magnitude current. The MCU determines a stabilized startup forward magnitude current and calculates a crossover condition, allowing for precise control of the motor's transition to single-phase operation by disconnecting the auxiliary winding and connecting the heater element based on real-time forward magnitude current analysis and processing. The system can also monitor for overload conditions indicative of rotor speed drops and can re-engage the auxiliary winding to maintain motor performance. The assembly includes a housing with a heat-sink for efficient thermal management and environmental protection of electronic components. The disclosed method provides a robust solution for efficient dryer operation by ensuring accurate control of motor start-up, running conditions, and overload protection.

The invention discloses an on-load tap-changer fault diagnosis method based on lightweight YOLO11, and is used for solving the problem of low mechanical fault diagnosis efficiency of a traditional on-load tap-changer. Comprising the following steps of: converting vibration signals in a motor starting stage and a change-over switch action stage into high-resolution time-frequency images through continuous wavelet transform (CWT) so as to comprehensively reflect time and frequency characteristics of the signals; starNet is adopted to replace a YOLO model backbone network, and the feature extraction capability is enhanced while the network compactness is kept through star operation; and designing an efficient joint convolution detection head EJCD, and realizing model lightweight and multi-scale target detection through grouping normalization and convolution parameter sharing. According to the invention, through combination of the time-frequency image representation capability of continuous wavelet transform and an efficient target detection framework of deep learning, the limitation of a traditional method in non-stationary signal processing is overcome, and the diagnosis efficiency and the model performance are significantly improved.

The invention relates to the technical field of appearance detection, and provides a product appearance detection device based on machine vision, which comprises a base, an intermittent material taking mechanism, a multidirectional detection mechanism and a reciprocating material pushing mechanism, the output end of the first motor is fixedly connected with a coaxially-arranged rotating shaft through a coupler, the accuracy of machine vision detection is ensured, after cleaning is completed, the first motor is started, a straight rod is driven to rotate, and the straight rod is stably transferred to a fixed disc of a fixed chassis through a hinge structure of a connecting rod and a sliding plate, so that preparation is made for appearance detection; according to the technical scheme, automatic operation of workpiece feeding and surface cleaning is achieved, so that the detection efficiency is improved, the accuracy of machine vision detection is enhanced through cleaning, the comprehensiveness and reliability of product appearance detection are ensured, and the problems that in the prior art, the detection automation degree is low, and detection is incomplete are solved through the technical scheme.

The invention discloses an electric tool, a nail gun and a control method of the electric tool. The motor is arranged in the shell; the battery pack is used for supplying power to the motor; 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 parameter detection unit is at least connected with the motor and at least detects working parameters of the motor; the controller is at least connected with the parameter detection unit; the controller is configured to limit the maximum duty ratio of the starting control signal to be smaller than or equal to the duty ratio threshold value if the working parameter is smaller than or equal to the parameter threshold value in the motor starting process.

The invention relates to the technical field of single-phase asynchronous motors, and discloses a single-phase asynchronous motor starting control circuit based on an MCU and double silicon controlled rectifiers, which comprises an MCU control unit, a main silicon controlled rectifier, an auxiliary silicon controlled rectifier, an electricity metering chip and a protection circuit. Particularly, in a starting stage, the MCU control unit firstly sends a trigger signal to the auxiliary silicon controlled rectifier to enable the auxiliary silicon controlled rectifier to be in a conducting state, and the auxiliary silicon controlled rectifier is controllably connected with the starting winding to provide extra starting torque for the single-phase asynchronous motor; and after a starting condition is met, the MCU control unit sends a trigger signal to the main silicon controlled rectifier to enable the main silicon controlled rectifier to be in a conducting state, and the main silicon controlled rectifier is connected with the live wire to enable the single-phase asynchronous motor to enter a normal operation state. Thus, the starting winding is only electrified when necessary, energy loss caused by continuous heating of the PTC is avoided, and the overall energy efficiency of the system is improved.

A drink maker is described that includes a housing, a mixing vessel configured to be removably coupled to the housing and receive a drink product, a dasher configured to mix the drink product within the mixing vessel, a drive motor configured to drive the dasher, and a controller. The controller is configured to detect an unsafe condition associated with the drink maker and, in response to detection of the unsafe condition, execute at least one control action comprising at least one of: alerting a user of the drink maker, deactivating the drive motor, preventing activation of the drive motor, or any combination thereof.

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.

The invention relates to the technical field of motor starting control, and discloses a large-current starting method suitable for a direct current motor, and the method comprises the steps: continuously monitoring the temperature data in the starting process of a driving motor through a temperature detection module, and collecting the current data in the starting process through an OCP detection module; collected temperature data and OCP monitoring characteristics are input into the restart logic module in a delayed mode, the restart logic module judges whether restart is conducted or not according to a preset algorithm and generates a first restart instruction or a second restart instruction, and the bridge drive circuit controls the motor to be started and restarted according to the received instruction till the motor is started successfully. By monitoring temperature and current data in real time, damage caused by overheating or overcurrent of the motor can be effectively prevented, the restart period is dynamically adjusted, the success rate of starting of the driving motor is increased, starting failure caused by overcurrent protection or overheating protection is avoided, and the service life of the motor is prolonged. The problem that in the prior art, when a large-capacity direct-current motor is started, current interruption is prone to occurring is solved.

The invention provides a draught fan starting method and device, electronic equipment and a readable medium, the draught fan starting method and device are applied to motor control equipment, the motor control equipment is used for controlling a motor to provide power for starting of a draught fan, and the motor comprises at least one phase; periodically sampling the current of at least one phase to obtain a current sampling value of at least one phase; determining a zero crossing point of the current of the phase based on the current sampling value of the phase; based on the current sampling value of the at least one phase and the zero crossing point of the current of the at least one phase, determining the forward and reverse wind state of the motor; any phase is used as a target phase, and based on the zero crossing point of the current of the target phase, the number of target sampling times in the sampling process of the target phase is obtained; judging whether the motor meets a preset motor starting condition or not based on the target sampling times and the forward and reverse wind state; if the motor meets the motor starting condition, the motor is controlled to provide power for starting of the draught fan, the motor is controlled to be stably started based on the forward and reverse wind state of the motor, and hardware control cost does not need to be newly increased.

The invention provides a motor drive control method and system for a high-speed hair dryer. The method comprises the following steps: acquiring a real-time sampling value of bus voltage; when the real-time sampling value reaches a preset voltage threshold value, performing vector operation on a torque current integral value of the motor current, and determining an initial position angle of a rotor; performing Clark transformation on the three-phase winding endpoint voltage according to the initial position angle of the rotor to generate a voltage component; determining a wind power interference coefficient of the torque current according to the voltage component, and determining a corresponding wind power state identifier in combination with a preset threshold value; configuring a sliding-mode observer according to a starting parameter group of a motor starting control mode corresponding to the wind power state identifier, and determining a rotor motion state parameter by performing phase tracking on output of the sliding-mode observer; and generating a three-phase pulse width modulation driving signal through the rotor motion state parameters to perform driving control on the motor. According to the scheme, the starting reliability and control precision of the motor can be remarkably improved, and the service life of the blowing cylinder is effectively prolonged.

A method for treating a patient via high-frequency (HF) electrostimulation therapy at an external target body location comprises generating a tonic motor activation (TOMAC) electrostimulation waveform using a power source supplying less than 100 volts zero-to-peak voltage amplitude per phase. The waveform has a frequency of 1,000 Hz to 5,000 Hz, a zero-to-peak current amplitude of 10-50 mA, and a duty cycle greater than 25%. The waveform is configured to overcome skin capacitance, induce proprioceptive afferent activity, and induce sustained tonic motor activation of a muscle. The method involves delivering the waveform to the external target body location over a specified duration during the patient's sleep period and receiving at least one TOMAC efficacy indication. The efficacy indication may relate to sleep efficiency, sleep stage, sleep onset latency, daytime sleepiness, CPAP compliance, or patient physiological response indicating TOMAC.

A fault detection system of a motor belongs to the technical field of motor fault detection, and aims to solve the problems that the existing motor fault detection device is high in detection difficulty and inaccurate in fault reason judgment. The fault detection system comprises the steps that a frequency converter is adopted as a motor starter, and the input voltage of the motor is gradually increased; a harmonic detection module is adopted to detect the harmonic component of a current signal output by the motor, and the harmonic detection module outputs a harmonic waveform; detecting whether the motor is in a normal operation state, a winding short-circuit fault state, a winding open-circuit fault state or a bearing fault state according to the harmonic waveform; a built-in insulation monitoring module of the frequency converter is adopted to detect the insulation resistance value of the motor; judging a motor leakage state according to the insulation resistance value; a torque measuring module arranged in the frequency converter is used for detecting the torque of the motor; judging a motor torque fault state according to the torque; a temperature sensor arranged in the frequency converter is used for detecting the temperature of the motor; and judging a motor fault state according to the temperature. The method is used for motor fault detection.

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 invention relates to a detector which comprises a circular turntable, a door, a first motor, a second motor and a third motor, a plurality of test channels are arranged on the turntable, a detection card can be inserted into each test channel, at least one pair of process grooves are formed in two opposite side walls of each test channel, the detector further comprises a sliding block, and after the detection cards complete detection, the sliding block is inserted into the process grooves. The turntable rotates and conveys the detection card to an initial position close to the sliding block, the third motor is started and drives the sliding block to push the detection card after detection to exit from the test channel from the initial position, and then the sliding block returns to the initial position; the length of the two side edges of the sliding block is larger than the length of the process grooves in the two opposite side walls of the test channel, and therefore the sliding block cannot be clamped in the process grooves when sliding in the test channel. According to the detector, when the detection card exits, the detection card cannot be stuck in the analysis test channel, so that the failure rate of the detector is reduced, a guarantee is provided for accurate test of the detector, and the detector is suitable for various detection occasions.

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 invention discloses automobile frame part welding equipment and a welding method thereof, and relates to the field of welding, the automobile frame part welding equipment comprises a bottom plate, a bearing plate and a welding machine arm main body, an overturning base mechanism is fixedly connected to the middle of the upper side of the bottom plate, and a part limiting mechanism is movably connected to the middle of the overturning base mechanism; the bearing plate is fixedly connected to the middle of the upper side of the component limiting mechanism. A frame is placed on a bearing plate, a second servo motor is controlled to be started, after transmission, multiple sets of side frames outside the frame are driven to synchronously get close to the middle, the frame is limited in the middle area of the bearing plate, the initial position of each sliding seat on a corresponding lead screw is adjusted according to the size of the frame, and after it is guaranteed that the sliding seats are driven to move back and forth after being powered, the sliding seats are driven to move back and forth. The sliding seats can be attached to the frame when the moving distances of the sliding seats are the same, so that the position of the frame can be fixed without excessive manual intervention, operation is more convenient, and an accurate position basis is provided for subsequent arrangement of parts.

The invention relates to the technical field of motor current regulation, in particular to a synchronous reluctance motor induction load change automatic regulation output energy-saving current system, which comprises a load control unit for selecting a starting mode according to a load condition by monitoring load data of a motor in real time and predicting a change trend of a load; the compensation isolation unit performs sampling and real-time compensation according to the change trend to obtain accurate data; the dynamic protection unit is connected with the compensation isolation unit, and key components are modularly designed, so that the starting stability of the motor is improved, the high efficiency in the running process of the motor is ensured, the impact on a power grid and the motor during starting can be remarkably reduced through a soft starting mode, the service life of the motor is prolonged, and the running stability of the motor is improved. The sampling precision is improved, it is ensured that current adjustment and load control are more accurate, the reliability of the system is greatly improved through an over-current and over-temperature protection mechanism, and equipment damage or shutdown caused by faults is avoided.

The roller washing machine is characterized in that after a dewatering signal is received, a motor is controlled to be started, the motor raises the rotating speed of a roller to a first rotating speed at a first acceleration, and in the process that the motor raises the rotating speed of the roller to the first rotating speed at the first acceleration, a first detection device obtains the vibration displacement of an outer roller and records the vibration displacement as detection vibration displacement E; the corrected vibration displacement E'is obtained according to the detection vibration displacement E, the first vibration displacement Ai and the second vibration displacement Bi, and when E < = A1, E '= E + (A1-B1), Ailt; when E < = Ai + 1, E '= E + (Ai-Bi); whether the corrected vibration displacement E'is larger than the maximum vibration displacement limit value or not is judged, if not, the motor raises the rotating speed of the roller to the rotating speed N, and if yes, the motor decreases the rotating speed to 0, and the clothes in the roller are shaken to be scattered; the precision of vibration displacement in a low-speed transient state can be improved, the success rate of dehydration completion can be improved, and the dehydration time can be shortened.

The invention relates to the technical field of door outer ring machining, and provides a welt limiting tool for door outer ring assembling, which comprises a workbench, and a square groove is formed in the top of the workbench. According to the device, a motor is controlled to be started through a controller, two clamping plates can oppositely move along the outer surface of a two-way lead screw, an outer door ring is clamped and fixed, a piston rod is synchronously pushed and extruded through a push plate, gas in a hollow cylinder enters a compression cavity of a pneumatic telescopic rod through a connecting pipe, the pneumatic telescopic rod stretches, and the outer door ring is clamped and fixed; the gear can drive the rotating rod, the L-shaped clamping block and the second elastic rubber pad to rotate, the second elastic rubber pad makes contact with the outer door ring and is compressed to a certain degree, the outer door ring abuts against the L-shaped plate, in this way, the clamping and fixing stability of the outer door ring can be improved, the situation that the outer door ring slides and deviates in the assembling and machining process is prevented, and the service life of the outer door ring is prolonged. Therefore, the welt assembly effect of parts of the door outer ring is ensured.

The invention discloses an electric tool, a chain saw and a control method of the electric tool. The electric tool comprises a functional part and a shell containing and supporting the functional part. The motor is contained in the shell and used for driving the functional part to work; the power supply device is detachably connected to the shell and used for providing electric energy for the electric tool; the controller is accommodated in the shell and is used for controlling the operation of the motor; wherein the controller is configured as follows: under the condition that the motor is started for the first time after the controller is powered on, the motor is controlled to be started in a first starting mode; under the condition that the motor is not started for the first time after the controller is powered on, the motor is controlled to be started in a second starting mode; a first starting acceleration of the motor in the first starting mode is smaller than a second starting acceleration of the motor in the second starting mode.

The invention discloses a permanent magnet motor starting control method and system based on harmonic injection, and aims to improve the harmonic injection precision and the dynamic adaptive capacity in the motor starting process. According to the method, frequency domain features are extracted by adopting CNN of a multi-scale convolution kernel, dynamic changes of a time sequence are captured in combination with Bi-LSTM, and an attention mechanism is introduced to dynamically weight key transient signals, so that comprehensive modeling and optimization of harmonic signals on frequency domain, time domain and transient features are realized; and an efficient closed-loop dynamic optimization system is constructed by further combining the global search capability and the real-time error feedback mechanism of the genetic algorithm. The method can adaptively capture the key change when the working condition suddenly changes, correct the harmonic injection parameters in real time, significantly reduce the power loss caused by torque fluctuation and high-frequency harmonic in millisecond response, and improve the stability of harmonic injection and the energy efficiency optimization effect.

An offline flux-linkage and moment-of-inertia identification method for a permanent magnet synchronous motor, the method comprising: on the premise that a pole-pair number Pn, a stator resistance Rs, and a stator inductance Ls of a motor are known, tuning PI parameters of a current loop and a speed loop; in a dual closed-loop mode for current and speed, identifying the flux linkage of the motor by using a recursive least squares method with a forgetting factor; in a current closed-loop mode, injecting a low-frequency current signal having progressively increasing amplitude and frequency, and determining a current magnitude required to start the motor and rotate same to a preset rotation speed threshold; and using acceleration / deceleration methods to identify the moment of inertia of the motor, wherein the motor is rotated forward and backward and identification is performed multiple times, and a median value is obtained by ranking to improve identification accuracy. The flux-linkage and moment-of-inertia identification processes are simple, stable, and reliable, the accuracy of identification results is high, one-click parameter identification can be achieved, and the method has a wide range of applications and is applicable to permanent magnet synchronous motors with various parameters.

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 relates to the technical field of automatic control of tool magazines, in particular to a storage tool magazine multi-motor load control method and a storage medium, and the method comprises the steps: collecting the operation data of a first motor, a second motor and at least one redundant motor in a storage tool magazine in real time, generating a first dynamic load index of the first motor and a second dynamic load index of the second motor; establishing a control strategy based on the first dynamic load index and the second dynamic load index; when the first dynamic load index exceeds the limit and the second dynamic load index is lower than a safety threshold value, a task migration rule is triggered, and sub-task distribution is dynamically adjusted; when the first dynamic load index and the second dynamic load index both exceed the limit, a redundant motor activation rule is triggered, and a high-load task is distributed to the redundant motor. According to the invention, the problems of low efficiency and equipment overload risks caused by uneven load distribution of a traditional storage tool magazine multi-motor system are effectively solved.

The utility model discloses a precast concrete component demoulding device, which belongs to the technical field of concrete forming and comprises a support frame, a cross recess is arranged in the support frame, four fixing plates are fixedly connected to the bottom end in the cross recess, and a first rotating shaft is rotatably arranged on the inner side surface of each fixing plate in a penetrating manner through a bearing; the device has the beneficial effects that the vibration motor and the rotary knob are arranged, the vibration motor is started to operate, the eccentric wheel can rotate, the eccentric wheel is attached to the inner side of the groove, then the convex block and the limiting spring are matched, the vibration plate can be continuously vibrated, and the vibration plate rapidly vibrates in a small amplitude, so that a formed concrete part can be separated from the vibration plate; and by rotating a knob, a second rotating shaft, a threaded rod and a first rotating shaft can be rotated, and four templates can be driven to be far away from each other through a plurality of bevel gears, so that the concrete part and the mold can be demolded.

The invention belongs to the field of motor control, and relates to a liquid cooling pump motor low-temperature starting method. After the liquid cooling pump receives a starting instruction, motor parameters are collected and judged, starting parameters at different temperatures are set, two-time pre-positioning, given-angle open-loop acceleration and closed-loop synchronization stages of a motor rotor are sequentially executed according to the corresponding starting parameters, and the motor is controlled to be started and run according to a rotating speed instruction. Wherein double closed-loop control of rotating speed closed-loop and current closed-loop is performed in the closed-loop synchronization stage, and rotating speed closed-loop control is performed by calculating and feeding back the actual rotating speed of the motor through the rotating speed of the motor. And if the generator overcurrent protection is triggered in any step of two-time pre-positioning, given-angle open-loop acceleration and closed-loop synchronization stages of the rotor, resetting the starting parameters, and starting the motor again for testing. Normal starting and working functions of the liquid cooling pump motor in a low-temperature environment can be realized, and the problem of starting failure or stalling caused by a traditional motor starting mode can be solved.

The utility model discloses an openable motor coupling protective cover, which relates to the technical field of protective covers, and comprises a protective cover body, a positioning base is arranged at the bottom of the protective cover body, a positioning through hole is arranged on the positioning base, an access hole is arranged at the upper end of the protective cover body, a cover body assembly is arranged in the access hole, and the cover body assembly is arranged on the protective cover body. The cover body assembly comprises a protective cover cap movably installed on the protective cover body, a net opening is formed in the protective cover cap, a protective net is arranged in the net opening, a positioning supporting foot is fixedly installed on one side of the protective cover cap, a limiting clamping groove is formed in the tail end of the positioning supporting foot, an electromagnet is connected into the limiting clamping groove, and the protective cover cap is fixedly installed on the protective cover body. A sensor is arranged at the edge of the protective cover cap, a limiting mechanism is fixedly installed on the front surface of the protective cover body, according to the openable motor coupler protective cover, through cooperative use of an electromagnet and the limiting mechanism, a user can be prevented from opening the protective cover cap when a motor is started, and the use safety is improved.

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.