34 results about "Motor time" patented technology

The invention discloses a networked brushless direct current motor time-delay compensation and control method using the active-disturbance-rejection control technology. The method comprises the steps of (1) establishing a brushless direct current motor control system model containing time-varying network-induced delay, wherein the brushless direct current motor control system is described as a discrete time linear time-varying system containing single-step input time lag, and then the uncertain dynamic state, caused by time-varying delay, of the system is partially described as the additive noise of the system; (2) designing an extended state observer which is used for estimating the uncertain dynamic state caused by time-varying delay as a part of total disturbance; (3) conducting compensation on the time-varying delay item in the brushless direct current motor control system. The method can be used for effectively conducting real-time estimation and compensation on the uncertain dynamic state caused by time-varying network-induced delay by means of the extended state observer, and can well restrain the uncertainty caused by time delay, internal and external disturbance of the system and model uncertainty.

The invention provides a method and device for controlling uninterruptible operation of a wind generator system in case of faulted power grid voltage. An existing doubly-fed motor rotor-side frequency converter and a CROWBAR circuit are utilized to realize the uninterruptible operation of a DFIG (doubly-fed induction generator) wind generator system when the power grid generates the serious voltage faults. The method at least comprises the following steps: 1) detecting the voltage of the power grid; 2) triggering CROWBAR protection; 3) waiting a voltage of the power grid to recover; 4) cutting off the CROWBAR protection; 5) starting a grid-side current transformer; and 6) starting a motor-side current transformer. In the invention, motor time sequences of corresponding states of the current transformer are given when the power grid voltage is seriously asymmetrical and when the motor is in a non-voltage state; the CROWBAR protection circuit of the current transformer is used to finishthe protection for the wind generator system and the current transformer; and the method and device provided by the invention are suitable for various faults of the power grid such as a symmetric voltage fault of the power grid, an asymmetric fault of a small voltage value of the power grid, a seriously asymmetric voltage fault of the power grid and a non-voltage fault of the power grid, and meets grid-connected requirements of the wind generator system formulated by a power grid corporation. Mechanical installation of equipment is simple and the installation is convenient and quick.

The invention discloses a method and a system for driving a vehicle-mounted purifier to periodically purify the air. The method comprises the following steps: presetting the purification starting time and purifying duration of the vehicle-mounted purifier; when the purification starting time is reached, starting a purifying unit of the vehicle-mounted purifier to purify the air; counting the working time of the vehicle-mounted purifier to obtain the working duration; judging whether the working duration is equal to the preset purification purifying duration or not, if so, controlling the vehicle-mounted purifier to stop purifying. The purification starting time is set by a user or set according to counted user driving time, so that the air in the vehicle can be purified before the user starts driving, the user does not feel the peculiar smell of the air after entering the vehicle, and the health of the user is not influenced by the air quality.

The invention discloses a multifunctional communication method for an integrated variable frequency motor and relates to a variable frequency motor communication method. For monitoring and control on a common motor, fault feedback is realized only through a relay, real-time monitoring on each motor state in a group can not be realized, and reasonable distribution of the motor time and a rotation speed on the basis of external factors can not be realized. According to the multifunctional communication method, a communication protocol for data transmission between an integrated variable frequency motor system and a host computer is set to realize monitoring and control on the integrated variable frequency motor, monitoring and control authorities are divided, and monitoring and control in corresponding grades are respectively carried out by the host computer according to different authorities. According to the method, polling for each motor state in the group can be realized through communication monitoring, during communication abnormity, the motor automatically shuts down to protect the system, so safety and reliability are realized.

The invention provides a multi-motor time-sharing control system and an imaging device. The system comprises a plurality of motors; a controller which selects one motor from the plurality of motors as a working motor; a motor driver which is connected with the controller and comprises a plurality of registers, wherein the registers are used for storing motor control parameters corresponding to the motors, and selecting the motor control parameter corresponding to the working motor as the control parameter of the working motor; and a switching mechanism which is disposed between the motor driver and the plurality of motors, and enables the motor driver to be switched to be connected with the working motor of the plurality of motors according to the working motor selected by the controller. The plurality of motors can be driven by a single-shaft motor driver in a time-sharing manner, thereby reducing the number of motor drivers.

The invention relates to a variable-step-length dynamic compression method for real-time monitored data in a mine environment, belonging to a time sequence data compression method. The method is a variable-step-length data compression method, which is designed for the real-time performance, the timeliness, the multi-source performance and the massive performance of monitored data of a mine hydrological sensor; sample characteristics of monitored data of the mine environment are analyzed, so that an real-time early warning level dividing point of the mine environment is calculated; the event early warning level of the mine environment is comprehensively calculated; compression step lengths of real-time and historical monitored data are respectively calculated; and a compression algorithm of the historical and real-time monitored data is designed. By means of the variable-step-length dynamic compression method for the real-time monitored data in the mine environment disclosed by the invention, a monitored data sample of the mine environment can be dynamically adjusted; the event early warning level of the mine environment is calculated; a monitored data compression function having the variable compression step length can be realized; by means of the method, the change tendency of the monitored data can be reflected as much as possible; while motored time sequence data characteristics are reserved, the data storage space and the time can be simplified; and the monitored data inquiry and display efficiency can be increased.

The invention discloses a rail vehicle door sub-health state recognition method based on time series data mining. A multi-scale sliding window discrete character algorithm is used to carry out data mining on rotation speed, torque and current of a rail vehicle door motor. Through calculating a distance from a template curve in a normal state as a characteristic and using principal component analysis to reduce a dimension, redundant information is removed, and a low dimensional characteristic with good classification performance is obtained. Then, a hierarchical sub-health state recognition model is used to identify a variety of sub-health data layer by layer from coarse to fine, finally the identification of a sub-health state in the process of opening and closing a door is realized, the characteristic of vehicle door motor time series data can be effectively extracted, common sub health in the process of opening and closing the door is accurately identified, and the method has a good application prospect.

The invention relates to a GPS monitoring communication system for preventing fatigue driving through fingerprint identification. The system comprises a remote service center and an automobile receiving terminal, wherein the remote service center is provided with a monitoring center; the monitoring center is connected with a communication module, a data processing module, a storage module and input equipment; the communication module is connected with a wireless signal transceiver, and the data processing module is connected with a database; the automobile receiving terminal is provided with a controller; the controller is connected with the communication module, a power module, a fingerprint identification module, a voice module, a GPS monitoring system and a serial interface; the communication module is connected with the wireless signal transceiver; the GPS monitoring system comprises a GPS positioning module and a GPS speed measurement module; and the serial interface is connected with a timer, an alarm, a speaker and a fingerprint machine. According to the GPS monitoring communication system, a driver is identified through the fingerprint machine, and the driving time is effectively monitored; and when the driving time of the driver exceeds the set time, the remote service center reminds the driver to stop fatigue driving in due time.

The invention belongs to the field of a dual-salient-pole permanent magnet motor, and discloses a dual-salient-pole motor with permanent magnets positioned between stator poles and rotor poles. The dual-salient-pole motor comprises a stator, a rotor, a rotary shaft, the permanent magnets and armature windings; multiple salient-pole-structured stator poles are arranged on the stator; the armature windings are wound around a group of stator poles; uniformly distributed salient-pole-structured rotor poles are arranged on the rotor; the permanent magnets are arranged on the stator poles and positioned between the stator poles and the rotor poles for improving air gap flux density between the stator and the rotor; the rotary shaft is arranged in the rotor; and when the armature windings are input with current, the magnetic field generated by the armature windings and the electric field generated by the permanent magnets are in interaction, so as to enable the rotor and the rotary shaft to be in rotational motion relative to the stator. By virtue of the dual-salient-pole motor, the air gap flux density between the stator poles and the rotor poles can be improved; and meanwhile, the magnetic resistance of the magnetic paths of the armature windings is improved, the winding inductance, the motor time constant and the current reversing time are lowered, the current reversing performance and the torque output performance are improved, and torque pulsation is lowered.

The invention discloses an air type motor time relay. The air type motor time relay comprises a shell, an air outlet, an air inlet, a regulating screw, a rubber membrane, a piston rod, a release spring, a baffle block, a support plate, a restoring spring, a movable iron core and coils, wherein the air outlet, the air inlet and the regulating screw penetrate through the shell, the rubber membrane is arranged in the shell, the piston rod is connected with the rubber membrane, the release spring is connected with the piston rod, the baffle block is connected with the release spring, the support plate is arranged below the piston rod, the restoring spring is connected with the support plate, the movable iron core is arranged below the support plate, and the coils are arranged in the movable iron. The air type motor time relay can be used for carrying out relay delaying through the air, is simple in structure, reasonable in product price and good in delaying effect and can be applied to various motors more and more to play a good protection role.

The present invention relates to metal pipe processing equipment, in particular to a copper pipe chipless blanking device, which includes a frame and a feeding mechanism, a chipless cutting mechanism and a breaking mechanism arranged on the frame in sequence. The feeding mechanism It consists of a vertically symmetrical stepping motor driving a transmission wheel connected to it and interlocking with each other. The chipless cutting mechanism is composed of a motor driving a cutter head through a synchronous pulley; the breaking mechanism includes a first cylinder, a second Two cylinders, clamps and sliders, the sliders are arranged on the frame, the first cylinder is connected to the sliders, the clamps are fixed on the sliders, and the second cylinder is connected to the sliders on the fixture. The present invention is a chip-free blanking equipment for copper tubes. Through the combination of the feeding mechanism, the chip-free cutting mechanism and the breaking mechanism, the copper tube is first rotary-cut and then broken through the breaking mechanism, so as to truly realize chip-free cutting.

A three-phase AC asynchronous motor time-sharing start-up method is a start-up method of controlling the voltage. When the three-phase asynchronous motor starts, we control the alternating current sine voltage of the three-phase power supply time-sharingly and input it into the carry-in terminal of the motor. When the instantaneous voltage difference of any two phases in the three phases, A, B and C, is zero, we turn on the two phases' voltage and impose them on the two corresponding carry-in terminal of the motor. We don't turn on the other phase's voltage until its instantaneous voltage is zero after a short time. The invention decreases the start-up current greatly on the foundation of guaranteeing that the three-phase asynchronous motor has enough start-up torsion.

The invention relates to the technical field of electrical equipment detection and diagnosis, and particularly relates to method for asynchronous motor parameter and fault information mapping process.The method comprises the following steps: extracting a mapping relationship between asynchronous motor time axis voltage, random uncertainty of load in current signals and fault characterization characteristic parameters when multi-harmonic parameters are introduced into power supply dynamic adjustment based on static and dynamic mathematical models; proposing the relation between the distortionquantity in the time domain and the harmonic quantity in the frequency domain and the fault information is provided; and establishing an asynchronous motor operation process data mapping model capableof distinguishing motor body parameters, loads, power supply changes, fault parameters and fault conditions.

The present invention provides a system and method for informing public transport vehicle arrival information, the system comprising: a plurality of on-board devices installed on respective public transport vehicles, each of the on-board device having a transceiver for transmitting and receiving data from and to public transport vehicle stops along a public transport vehicle line, a first processing unit programmed to store and process the received data, and a first display module which is operatively coupled to the first processing unit and is for displaying the data, wherein the data includes identification of the vehicle, schedule time frame and next schedule departure time of a following vehicle, the schedule time frame being obtained by subtracting a current departure time at a vehicle terminus from a next schedule departure time,- and a plurality of public transport vehicle stop devices installed in the respective vehicle stops, each of the public transport vehicle stop device having a preset vehicle identification therein and having a transceiver for transmitting and receiving the data from and to the on-board device if the preset vehicle identification matches the vehicle identification of the on-board device, a second processing unit programmed to store and update the received data to count down a waiting time of the vehicle till zero and then, if necessary, switch to count up a delay time, and a second display module which is operatively coupled to the second processing unit and is for displaying the waiting time or the delay time and other information.

The present invention belongs to the field of separation technology, and is especially vacuum pumping unit for decompression distilling apparatus. The vacuum pumping unit includes condenser with hot medium inlet connected to the outlet pipe of the decompression distilling tower and Roots-water ring vacuum set or Roots-reciprocating vacuum set in the outlet pipeline of hot medium outlet of the condenser. Adopting vacuum set to provide negative pressure source for the decompression apparatus makes the present invention has high pumping rate, fast starting, powerful adaptability, shortened operation time, stable operation state and other advantages. The present invention may be used widely in atmospherical and vacuum unit of petrochemical industry.

The invention provides a fatigue driving monitoring device and method and a storage medium. An automobile starting detection module is used for detecting an ignition device of an automobile, and controlling camera equipment disposed at the front end of a driver to be started to obtain initial face image information when the automobile is started; a wheel rotation detection module is used for detecting wheels of the automobile, and when the wheels rotate, comparison face image information is obtained from the camera equipment; and an image information verification module is used for verifying the initial face image information according to the comparison face image information, and if the verification succeeds, timing processing is carried out on the current time to obtain the driving time.The fatigue driving of the driver can be effectively monitored, the accuracy of identifying the fatigue driving is improved, the life safety of the driver and others is guaranteed, and the public order is maintained.

The invention discloses a networked brushless direct current motor time-delay compensation and control method using the active-disturbance-rejection control technology. The method comprises the steps of (1) establishing a brushless direct current motor control system model containing time-varying network-induced delay, wherein the brushless direct current motor control system is described as a discrete time linear time-varying system containing single-step input time lag, and then the uncertain dynamic state, caused by time-varying delay, of the system is partially described as the additive noise of the system; (2) designing an extended state observer which is used for estimating the uncertain dynamic state caused by time-varying delay as a part of total disturbance; (3) conducting compensation on the time-varying delay item in the brushless direct current motor control system. The method can be used for effectively conducting real-time estimation and compensation on the uncertain dynamic state caused by time-varying network-induced delay by means of the extended state observer, and can well restrain the uncertainty caused by time delay, internal and external disturbance of the system and model uncertainty.

Provided is a high-voltage breaker energy-storing motor time testing apparatus which comprises an energy-storing motor power control switch for controlling the energy storage of the high-voltage breaker energy-storing motor. The energy-storing motor power control switch is connected with an energy-storing signal output port which is connected with a high-voltage breaker aviation plug via a secondary adapter. A current transformer connected between the energy-storing motor power control switch and the energy-storing signal output port is connected with a CPU module used for achieving calculation of energy-storing time of the energy-storing motor, outputting calculated results, and driving a liquid crystal display screen. A signal processing and analog-to-digital converting module is connected between the current transformer and the CPU module and capable of performing signal processing and analog-to-digital conversion on a converted signal of motor energy-storing power current flowing through the current transformer. The CPU module is connected with a liquid crystal display screen used for displaying testing results such as breaker energy-storing time or the like and formed by a color liquid crystal display module. The high-voltage breaker energy-storing motor time testing apparatus has characteristics of simple structure, easy manipulation, and good universality.

The invention discloses grinding equipment for a circular nose hair trimming cutter head. The grinding equipment comprises a grinding equipment body, wherein a support is arranged on the outer wall of the lower end of the grinding equipment body, and a working supporting rod is arranged on the outer wall of the upper end of the grinding equipment body. According to the grinding equipment for the circular nose hair trimming cutter head, a gear oil feeder can inject oil into a gear box and a transmission shaft through an oil distributor, the operation efficiency of the gear box and the transmission shaft is improved, and then high operation efficiency of the grinding equipment body is improved; under the action of a product locating plate, the stability of a product is kept, damage caused by product falling is reduced, the safety performance of the grinding equipment body is further improved, the grinding equipment body stops operating, the operating safety of the grinding equipment body is kept, and damage to the grinding equipment body is reduced; and a motor time regulator and a cylinder time regulator can regulate the grinding duration to improve the grinding quality, so that a better use prospect is brought.

A three-phase AC asynchronous motor time-sharing start-up method is a start-up method of controlling the voltage. When the three-phase asynchronous motor starts, we control the alternating current sine voltage of the three-phase power supply time-sharingly and input it into the carry-in terminal of the motor. When the instantaneous voltage difference of any two phases in the three phases, A, B and C, is zero, we turn on the two phases' voltage and impose them on the two corresponding carry-in terminal of the motor. We don't turn on the other phase's voltage until its instantaneous voltage is zero after a short time. The invention decreases the start-up current greatly on the foundation of guaranteeing that the three-phase asynchronous motor has enough start-up torsion.

The invention relates to a variable-step-length dynamic compression method for real-time monitored data in a mine environment, belonging to a time sequence data compression method. The method is a variable-step-length data compression method, which is designed for the real-time performance, the timeliness, the multi-source performance and the massive performance of monitored data of a mine hydrological sensor; sample characteristics of monitored data of the mine environment are analyzed, so that an real-time early warning level dividing point of the mine environment is calculated; the event early warning level of the mine environment is comprehensively calculated; compression step lengths of real-time and historical monitored data are respectively calculated; and a compression algorithm of the historical and real-time monitored data is designed. By means of the variable-step-length dynamic compression method for the real-time monitored data in the mine environment disclosed by the invention, a monitored data sample of the mine environment can be dynamically adjusted; the event early warning level of the mine environment is calculated; a monitored data compression function having the variable compression step length can be realized; by means of the method, the change tendency of the monitored data can be reflected as much as possible; while motored time sequence data characteristics are reserved, the data storage space and the time can be simplified; and the monitored data inquiry and display efficiency can be increased.

The invention discloses an engineering vehicle safety running monitoring method. The engineering vehicle safety running monitoring method comprises the following steps that shape change sensor signalsare collected, and whether no load exists or not is judged; if no load exists, no control signals are output; if no load does not exist, the next step is conducted; the vehicle running state is detected, and whether running is conducted or not is judged; if running is not conducted, no control signals are output; if running is conducted, the next step is conducted; driver card information is read, and whether the driver card information is legal or not is judged; if the driver card information is illegal, refueling and gear increasing are stopped; if the driver card information is legal, no control signals are output, and the next step is conducted; the driver continuous driving time is detected, and whether fatigue driving exists or not is judged; if fatigue driving exists, refueling andgear increasing are stopped; if fatigue driving does not exist, no control signals are output, and the next step is conducted; the tilt angle sensor information is collected, and whether the tilt angle is smaller than 5 degrees or not is judged; if the tilt angle is smaller than 5 degrees, the vehicle speed is controlled to be smaller than 60 km / h; if the tilt angle is not smaller than 5 degrees,whether downhill exists or not is continuously conducted; if downhill does not exist, no control signals are output; and if downhill exists, gear increasing is stopped, and the vehicle speed is controlled to be smaller than 30 km / h.

The invention discloses a multivariable fitting-based parameter optimization modeling method for a generator speed regulating system. The method comprises the following steps: firstly, by a multivariable fitting method, fitting the relationship between three performance indexes, namely percent overshoot, rise time and regulating time, of primary frequency modulation of a generator and four control parameters, namely unit regulation power, a hydraulic servo-motor time constant, a turbine steam time constant and a generator inertia time constant; with the obtained multivariable fitting formula of the primary frequency modulation as an equality constraint, control parameter value ranges and other conditions as inequality constraints and the optimal primary frequency modulation performance of the fine speed regulating system as a final target, searching the speed regulating system parameter with the optimal primary frequency modulation performance by a multi-target and multi-constraint nonlinear optimization method; and building an optimized generator speed regulating system model.

The invention discloses a system and method for detecting time sequence of a servo motor, and the system specifically comprises a first servo motor, a second servo motor and an oscilloscope, wherein the first servo motor is connected with the servo motor driver which is matched with the first servo motor in a time sequence and is preset with driving parameters, and the first servo motor is drivenby the servo motor driver to rotate; the second servo motor is connected with the motor of the first servo motor through a coupling shaft and rotates under the dragging of the first servo motor through the coaxial rotation of the coupling shaft and the first servo motor; and the oscilloscope is connected with the winding wire end and the encoder end of the second servo motor and is used for detecting the motor time sequence of the second servo motor. The beneficial effects of the above-mentioned technical scheme are that the first servo motor drags the second servo motor to rotate through thecoupling shaft, so that the working parameters of the motor can be directly measured by the oscilloscope, a corresponding servo motor driver does not need to be matched, the complexity of the operation process of the servo motor is reduced, and the economic cost of selecting the servo motor is reduced.

The invention relates to a method for controlling the time operation of a DC motor of a vehicle-mounted air conditioner controller. End open-circuit voltage position, feedback end short-circuit voltage position and the running distance of each cycle, read the current DC motor feedback end voltage position, (2) motor start judgment, (3) motor operation, (4) motor time learning, using the above The technical solution, the present invention provides a method for controlling the time operation of the DC motor of the vehicle-mounted air conditioner controller, regardless of whether the DC motor has a feedback terminal, and regardless of whether the feedback terminal fails, the DC motor can continue to run according to the time, thereby ensuring that the vehicle The air conditioning system can work normally, which improves the safety factor of driving.

The invention provides a multi-motor time control system and a control method therefor. The system comprises an event occurrence module, a control module, a signal selection module, a motor module, a drive module and a time delay module, wherein the event occurrence module is used for sending out information corresponding to a trigger event; the control module is used for analyzing event information corresponding to the event; the signal selection module is used for selecting vibration information required by the event; the motor module comprises a plurality of motors; the drive module is used for driving the motor module to vibrate; the control module is also used for judging whether the vibration information needs to be delayed or not; the time delay module is used for transmitting the vibration information to the drive module in a delaying manner when the vibration information needs to be delayed, so as to drive the motor module to vibrate in the delaying manner; and when the vibration information does not need to be delayed, the vibration information is transmitted to the drive module, so as to drive the motor module to vibrate. The multi-motor time control system provided by the invention can control the plurality of motors to vibrate in a right order according to specific event requirements.

The invention discloses a washing machine motor starting control method and belongs to the household electrical appliance product field. In the prior art, a washing machine motor can not intelligentlyselect a starting voltage according to a load condition. By using the method of the invention, the above problem is solved. The technical scheme is characterized by prefabricating the comparison table of a clothing weight G-the optimal starting voltage V of a washing machine motor-time T required by the washing machine motor to reach a rated rotation speed after being started with the optimal starting voltage; detecting the time required by the washing machine motor to reach the rated rotation speed after each start to be Tx; and adjusting the starting voltage of the washing machine motor atnext startup by comparing the difference values deltaTx between the Tx and T corresponding to each starting voltage, wherein the first starting voltage of the washing machine motor is determined according to the detected clothing weight in the washing machine. The method is mainly used for increasing the work efficiency of the washing machine motor.

The invention discloses a method and system for eliminating motor instability data based on electrical distortion analysis, including: setting motor operating state threshold data according to the magnitude of electromagnetic interference at the on-site signal acquisition end, and judging the current state of the motor; using limiting filtering and two-order Jump limit filtering algorithm, filter data and extract the characteristics of the motor running state; capture the characteristic points of the motor time, calculate the motor start start, start end, stop start, stop end time, judge the current sampling data stable operation data length and analyze and identify the current time Data, keep high-quality data. The present invention provides high-quality sampling data for motor fault diagnosis and prediction tasks, effectively improving motor fault diagnosis and prediction systems and other motor on-line monitoring systems in practical applications due to low data quality resulting in fault misjudgments and missed judgments, and fault evolution trends are not stable. Accuracy and other issues have improved the application value of this type of system in engineering practice.