44results about How to "Solve the stall" patented technology

The invention provides a stalling detecting circuit for a refrigerator fan motor. The stalling detecting circuit comprises a current detecting circuit, an amplifying circuit and a control circuit, wherein the input end of the current detecting circuit is connected to a drive circuit of the refrigerator fan motor and detects current passing the drive circuit in the refrigerator fan motor; the input end of the amplifying circuit is connected to the output end of the current detecting circuit, and the amplifying circuit is used for amplifying a first voltage signal output by the current detecting circuit to output an amplified second voltage signal; and the control circuit is connected to the amplifying circuit, receives the second voltage signal output by the amplifying circuit and judges whether stalling happens to the refrigerator fan motor according to change of the second voltage signal. Correspondingly, the invention further provides a refrigerator and a control method of the refrigerator. With the adoption of the technical scheme, the current signal of the fan motor can be detected; and if the fan motor abnormally stalls, the control circuit of the refrigerator performs forced defrosting control or gives an alarm after an abnormal feedback signal is detected, so that abnormal refrigeration of the refrigerator is avoided.

The invention relates to a motor blocking control circuit for a cooking machine, the invention solves the shortcomings of the prior art, The technical scheme is as follows: The cooking motor is powered by a power supply unit, the power supply unit is positively connected with the cooking motor through a pair of normally open contacts of the contactor KM1, the power supply unit is inversely connected with the cooking motor through a pair of normally open contacts of the contactor KM2, A high-temperature detection switch circuit is arranged on the cuisine motor, the positive electrode of the power supply unit is connected to the first end of the normally closed button SB1, the second end of the normally closed button sb1 is connected to the first end of the normally open button sb2, The first end of the normally open button SB2 is connected to the second end of the normally open button SB2 through the normally open delay disconnect contact of the time relay KT1, and the first end of thenormally open button SB2 is also connected to the second end of the normally open button SB2 through the normally open delay disconnect contact of the time relay KT2.

The invention provides a solar energy sunlight tracking power energy system and a smoothing network multistage servo control method, which can be applied to the fields such as solar power generation, power energy, automatic control and artificial intelligence, etc. The system comprises a signal acquisition and processing circuit (1), a CPU control circuit (2), a motor drive circuit (3), a keyboard display circuit (4) and a power circuit (5). The system and the arrangement of multi-sensors can ensure that a solar energy panel can rotate to the best lighting point in a real-time manner to acquire and store the solar energy with high efficiency. The smoothing network multistage servo control method can solve the problems that a motor vibrates when in commutation and is blocked when in low-speed running and burnt due to the over-voltage under various circumstances. The solar energy sunlight tracking power energy system and the smoothing network multistage servo control method provided by the invention especially improve the efficiency, the stability and the intellectualization of the solar energy system.

The invention discloses a single-core low-speed four-wheel mini mouse sprint controller, comprising a battery device, a sensor device, a gyroscope device, a vacuum suction device and a control unit module; a pair of the four wheels of the mini mouse is positioned in the middle of the mini mouse, and the other pair is arranged on the tail part of the mini mouse; the gyroscope device comprises a gyroscope G1 and a speedometer A1; the gyroscope G1 is a three shaft gyroscope which is used for measuring movement of three rotation directions; and the speedometer A1 is a three-shaft speedometer used for measuring accelerated speed of three translational motions. The invention solves the slipping of the mini mouse during the walking through the vacuum suction device arranged under a chassis, and automatically adjusts the servo control of the vacuum suction DC motor M according to the marching speed of the mini mouse and the ground situation, so that the mini mouse is not limited to the ground situation of the maze.

The invention discloses a deicing mechanism with a position self-adaptive adjustment function, and a self-adaptive adjustment method thereof. The deicing mechanism comprises a main body frame, an infrared ranging module, a control adjustment module, a lead screw sliding block module and a deicing module, wherein the infrared ranging module, the control adjustment module, the lead screw sliding block module and the deicing module are all installed on the main body frame, the main body frame is of a T-shaped structure, the infrared ranging module comprises a first sensor and a second sensor, thefirst sensor is installed at the front end of a top plate of the main body frame, and the second sensor is installed on the same horizontal plane of an axis of a knocking motor of the deicing module;and the control adjustment module is installed at the middle end of the top plate of the main body frame. By adopting the deicing mechanism and the self-adaptive adjustment method thereof, the knocking deicing module adjusts the position self-adaptively, the overhead lines of different diameters can be deiced, the problems that the ice layer cannot be knocked and the T-shaped rotating rod is blocked by means of the overhead lines or thick ice layer during the climbing process of the deicing mechanism on the overhead lines are solved, and the deicing efficiency can be effectively improved.

The invention relates to the technical field of access control, in particular to an automatic bolt lock for a side hung door and the side hung door. The automatic bolt lock for the side hung door comprises an outer shell, an inner shell, a push rod motor and a bolt, a guide rod extends downwards from the top surface of the outer shell, a limiting support rod extends upwards from the bottom surfaceof the outer shell, the limiting support rod is used for supporting the inner shell, and a through hole I for penetrating of the bolt is formed in the bottom surface. The inner shell is arranged between the limiting support rod and the top surface of the outer shell, the push rod motor is located in the inner shell, a plate-shaped member is fixed on a base of the push rod motor, a push rod of thepush rod motor extends out of the bottom surface of the inner shell and is connected with the bolt, the end of the guide rod sequentially penetrates through a through hole II formed in the top surface of the inner shell and a through hole III formed in the plate-shaped member, and the portion, between the plate-shaped member and the top surface of the inner shell, of the guide rod is sleeved withan elastic member I. The automatic bolt lock has the following advantages that the problem that the motor is blocked easily when the bolt is blocked in the releasing process is solved; the bolt can be prevented from being pried and unlocked by external force, and the door body can be prevented from deforming under the action of gravity.

The invention discloses a double-core high-speed two-wheeled picomouse exploration controller, comprising a sensor device, a gyroscope device G, a vacuum suction device and a control unit module; the sensor device and the gyroscope device are both in signal connection with the control unit module; the control unit module is respectively in signal connection with motors X, Y and M. The controller solves the problem of skidding of a picomouse in walking through the vacuum suction device arranged under a chassis, and meanwhile automatically regulates the servo control of a vacuum suction direct current motor M according to the walking speed of the picomouse and ground conditions, thereby preventing the picomouse from being bound to labyrinth ground road conditions.

The invention provides a resetting method for a pointer of an automobile instrument. The method comprises the following steps that: 1, a rotary potentiometer is arranged on a rotary shaft, which is used for controlling the pointer of the automobile instrument, of a stepping motor, wherein the rotary potentiometer is electrically connected with an instrument control system and comprises a resistor body and a movable contact which is arranged on the resistor body and is linked with a rotation shaft of the stepping motor; 2, voltage is applied to two ends of the resistor body; and 3, when a vehicle is just ignited and the speed is zero, the instrument control system acquires a voltage signal of the movable contact, acquires the slip angle of the pointer relative to the zero point according to the acquired voltage signal of the movable contact, and controls the stepping motor to drive the pointer to rotate a corresponding angle to zero. By the method, the problem of lock during automobile ignition and resetting of instrument can be solved, and defects of vibration and noise of the instrument pointer during resetting of the instrument and shortening of service life of the stepping motor are eliminated.

The invention discloses anti-jamming electric pruning scissors, which comprise a motor, blades, a motor control circuit and a detection device. The motor control circuit is used for supplying drive current to the motor. The detection device electrically connected with the motor control circuit is used for detecting rotation speed of the motor or detecting current flowing through the motor in operation. When the detected rotation speed of the motor is not matched with a preset value or the current flowing through the motor in operation exceeds a preset value, the detection device starts the motor control circuit to control the motor to rotate reversely and periodically, so that the blades are drawn back and freed from jamming. The anti-jamming electric pruning scissors can be used for simply, quickly and effectively solving the problem of jamming of the pruning scissors.

The invention relates to an automatic control system for a thermal testing infrared radiation heater of a spatial camera and a method, belonging to the field of industrial automation. A closed-loop control system of the infrared radiation heater is formed by a controller (1), a motor drive circuit (2), a location sensing and processing circuit (3), an implementation circuit (4), a power supply (5), a stepper motor (6) and a signal conditioning circuit (7), and is connected with the spatial camera and the infrared radiation heater for automatic control of opening and closing of the heater. Thecost of the original method is reduced, the workload of the testing personnel is decreased, the defects caused by motor locking are avoided, and the reliability of the control system is improved.

The invention discloses a magnetic coupling driving numerical control plug. The magnetic coupling driving numerical control plug comprises a lower plug, a plug main body, a titanium alloy plug, a permanent magnet sheet fixing sleeve, a coupling, a valve sleeve, a valve core, a rubber ring, a driving shaft, permanent magnet sheets, a speed reducer, an absolute value encoder and a permanent magnet shaft, the plug main body achieves static sealing by using a first O-shaped ring group, one permanent magnet sheet is arranged in each permanent magnet sheet mounting hole of the permanent magnet sheetfixing sleeve, and one end of the permanent magnet sheet fixing sleeve is connected to the output shaft of the speed reducer through the coupling; and the titanium alloy plug is placed in the hole ofthe permanent magnet sheet fixing sleeve in a sleeved mode, the titanium alloy plug is in clearance fit with the permanent magnet sheet fixing sleeve, the permanent magnet shaft and the driving shaftare connected by adopting a mortise and tenon structure, the permanent magnet shaft rotates under the action the high magnetic field in the permanent magnet sheet fixing sleeve, a driving thread is arranged on the upper part of the driving shaft and matched with the thread of the plug main body, the output end of a high torque DC motor is connected to the speed reducer, and the absolute value encoder is mounted at the tail of the high torque DC motor and used for recording the rotating ring number of the high torque DC motor so as to indirectly determine the position of the valve core.

The invention provides an electric actuator locked-rotor fault control method. The electric actuator locked-rotor fault control method comprises the steps that actual rotation angle information of a valve is obtained; whether the absolute value of the difference value between an actual valve rotation angle alpha 1 and a valve rotation instruction angle alpha 2 is larger than a preset difference value beta or not is judged; when it is judged that the absolute value of the difference value between the actual rotation angle alpha 1 of the valve and the rotation instruction angle alpha 2 of the valve is larger than the preset difference value beta, it is judged that the electric actuator is locked, and the rotation direction of the valve is recorded; and when it is judged that the absolute value of the difference value between the actual valve rotation angle alpha 1 and the valve rotation instruction angle alpha 2 is smaller than or equal to the preset difference value beta, it is judged that the electric actuator is normal. The electric actuator locked-rotor fault control method is used for improving the accuracy of detecting whether the electric actuator is in the locked-rotor state or not.

A centrifugal compressor of a hydrogen circulating pump comprises a volute, an impeller and an adapter, wherein the impeller comprises blades, a blade bearing disc and a sealing disc, and the blades are evenly arranged at the end, facing an axial air inlet, of the blade bearing disc around the rotating axis of the impeller; and the sealing disc is coaxially arranged at the other end of the blade bearing disc; and sealing teeth are arranged on the circumferential surface of the sealing disc, and the sealing teeth are in clearance fit with the adapter to form serrated sealing. The centrifugal compressor is compact in overall structure, light in weight, high in reliability, low in noise, and the working condition requirements of high pressure ratio and large flow can be met. On the basis that the defects of hydrogen circulating pumps in other forms are overcome, non-contact pressurization is achieved, and a deicing heating device is designed while the pressurization pneumatic efficiency is considered; the locked-rotor problem due to icing of the hydrogen circulating pump is solved, and the control difficulty of the hydrogen circulating pump is reduced; and the service life of the hydrogen circulating pump is prolonged.

The invention provides a juicer. The juicer comprises a machine body, a cutting assembly, a juicing assembly and a drive assembly, wherein a first feeding channel and a second feeding channel are formed in the machine body; the cutting assembly is mounted in the second feeding channel; the juicing assembly is mounted in the machine body, and is positioned below the first feeding channel and the second feeding channel; the drive assembly is connected with the cutting assembly and the juicing assembly, and drives the cutting assembly and the juicing assembly to work. According to the juicer provided by the invention, common fruits and vegetables, such as apples can be fed into the juicer from the first feeding channel, and are juiced directly through the juicing assembly, so that the function the same as that of the traditional juicer is realized; while the food materials having thick and long fibers and high hardness, such as sugarcane, are fed into the juicer from the second feeding channel and are cut up through the cutting assembly first, the cut up food materials are then juiced through the juicing assembly, therefore, the pressure caused by the cut up food materials to the juicing assembly is greatly reduced, further, the problems of stuck motor, juicer rotation blockage and the like are solved, and finally, the purpose of smoothly squeezing the food materials such as sugarcane is realized.

The invention discloses a through shaft type remote control pressing plate and a remote control method thereof, and belongs to the technical field of hard pressing plates of electric power secondary equipment. The pressing plate comprises a pressing plate body and an intelligent control part, the pressing plate body comprises a pressing plate base, a pressing plate handle and a pressing plate connecting rod, and the intelligent control part comprises a through shaft type stepping motor, a control circuit, a switching-on state detection circuit and a switching-off state detection circuit. A through hole is formed in the center of the pressing plate base, the lower end of the pressing plate connecting rod penetrates through the through hole and is connected with the through shaft type stepping motor through a lead screw structure, and the pressing plate handle is arranged at the upper end of the pressing plate connecting rod. The control circuit controls the through shaft type stepping motor to rotate according to a remote control signal, the pressing plate connecting rod is driven to move up and down to carry out switching-on and switching-off operation of the pressing plate; and the switching-on state detection circuit and the switching-off state detection circuit detect the switching-on and switching-off state of the pressing plate according to the up-down moving position of the pressing plate connecting rod. The through shaft type stepping motor is adopted, the control precision is high, and the remote control pressing plate switching reliability is high.

The invention discloses a single-core low-speed four-wheel little mouse full-digital navigation servo controller comprising a chassis. A battery device, a sensor device, a gyroscope device, a vacuum suction device and a control unit module are arranged on the chassis. Two pairs of moving wheels are connected at the two sides of the chassis. One pair of the moving wheels are arranged at the middle part of the chassis, and the other pair of the moving wheels are arranged at the tail part of the chassis. The gyroscope device comprises a gyroscope G1 and an accelerometer A1. The gyroscope G1 is a triaxial gyroscope which is used for measuring movement of three rotating directions. The accelerometer A1 is a triaxial accelerometer which is used for measuring acceleration of three translational movements. The phenomenon of slipping of the little mouse in navigation can be solved by the vacuum suction device arranged below the chassis. Meanwhile, servo control of a vacuum suction DC motor M can be automatically adjusted according to advancing speed of the little mouse and the ground conditions so that the little mouse is enabled not to be limited by the ground conditions of a maze.

The invention discloses a double-core high-speed two-wheeled picomouse full digital navigation servo controller, comprising a chassis provided with a cell device, a sensor device, a gyroscope device G, a vacuum suction device and a control unit module; two sides of the chassis are in connection with motion wheels. The controller solves the problem of skidding of a picomouse in walking through the vacuum suction device arranged under the chassis, and meanwhile automatically regulates the servo control of a vacuum suction direct current motor M according to the walking speed of the picomouse and ground conditions, thereby preventing the picomouse from being bound to labyrinth ground road conditions.

A deep-well pump control method and a deep-well pump control device are disclosed. The deep-well pump control method comprises the steps of controlling a motor of a deep-well pump to operate at a rated rotating speed and obtaining torque current and output power of the motor, and if the torque current of the motor is less than a predetermined torque current lower limit and the output power of themotor is less than a predetermined first power threshold, controlling the motor to operate; if yes, controlling the motor to be stopped, otherwise, judging whether the output power of the motor is smaller than a preset second power threshold value Pmin2 or not, if not, executing the previous step again, if yes, executing the next step, and recording the outlet pressure of the deep-well pump to serve as a pressure threshold value; reducing the rotating speed of the motor, obtaining an outlet pressure change value of the deep-well pump, and judging whether the deep-well pump leaks or not according to the outlet pressure change value. Water-free protection of the deep water pump can be automatically achieved, the pressure threshold value generated when the deep water pump is shut down is automatically recognized, and whether the deep water pump leaks or not is detected.

The invention relates to the technical field of intelligent door locks, in particular to a motor stalling processing method and device, a storage medium and electronic equipment, and solves the problems of door lock loss and service life reduction caused by relatively long consumed time when motor stalling is judged in a mode of detecting that the power of a motor is obviously increased in related technologies. The motor stalling processing method comprises the following steps of: measuring a pressure value generated by a lock cylinder thumb wheel when a motor drives the lock cylinder thumb wheel to unlock; judging whether the pressure value is greater than a first preset threshold value or not; and if the pressure value is larger than the first preset threshold value, determining that the motor stalls, and enabling the motor to stop working. According to the motor stalling processing method and the device, whether motor stalling occurs or not is determined by measuring the pressure value of the lock cylinder thumb wheel during unlocking, the pressure value can be immediately transmitted to a main core board, the motor stops working, the motor stalling problem is solved, meanwhile, losses of the motor and a control mainboard are reduced, and the service life of the intelligent door lock is prolonged.

The invention discloses a control system for a medical electric drill controller. The control system for the medical electric drill controller comprises a micro processor, a switching power supply and a motor. The output end of the micro processor is connected with a switching power supply voltage regulating circuit. The output end of the switching power supply voltage regulating circuit is connected with the switching power supply. The output end of the micro processor is further connected with a photoelectric isolator. The output end of the photoelectric isolator is connected with a motor driving control and protection circuit. The motor driving control and protection circuit is connected with the motor. The micro processor controls the start-up, the shut-down and the positive and reverse rotations of the motor through the photoelectric isolator. Due to the fact that the micro processor controls the start-up, the shut-down and the positive and reverse rotations of the motor through the photoelectric isolator, the multi-layer protection is adopted on the motor.