86results about How to "Reliable control method" patented technology

The invention relates to the field of smart cars, in particular to an automatic car tracking system, comprising a processing module and a control module. The processing module comprises a decision controller, an image acquisition unit and a radar acquisition unit. The image acquisition unit is used for obtaining video or image information in front of a car and performing processing to obtain the relative position information of the car on the lane, the radar acquisition unit is used for detecting distance, position and speed information of an obstacle in front of the car, the decision controller is used for outputting car speed, angle and angular velocity control commands to the control module after receiving and processing the information, and the control module is used for controlling the car speed and direction according to the control commands. The invention also discloses a control method of the system. The image and the radar technology are combined, the car is detected and tracked more accurately, the safety issue under multiple weather conditions is better solved, traffic accidents caused by urban road congestion are reduced, safety is improved and the mental pressure of drivers is alleviated.

The invention provides a washing machine, a power failure memory control method thereof and a power failure memory control device of the washing machine. The power failure memory control method comprises the following steps of (S1) acquiring step marks corresponding to current running steps of the washing machine and preset parameters by using a controller; (S2) writing the step marks and the preset parameters into a preset storage unit by using the controller; (S3) acquiring the step marks and the preset parameters in the preset storage unit by using the controller after the washing machine is restarted; and (S4) acquiring running steps corresponding to the step marks according to the step marks and starting the washing machine according to the running steps and the preset parameters. By a step-by-step memorizing method, relevant information of the current running steps of the washing machine is stored in real time, the working state of the washing machine can be accurately recovered to a working state before power failure when the washing machine is restarted, and a power failure memory function is fulfilled; and circuits are simple in structure, the cost of the circuits is reduced, and the power failure memory control method is easy to implement.

The invention aims to provide an electronic parking brake system which can be controlled simply and reliably and has a control method of an assistant hill starting function. The electronic parking brake system comprises a control unit and a brake motor which is controlled by the control unit and the signal input end of the control unit is connected with a throttle opening sensor, a clutch sensor, an engine rotating speed sensor, a current sensor of the brake motor, a hand brake switch and a hill start switch; the brake motor drives a turbine worm to rotate through a driving mechanism; the turbine worm is sleeved with a screw rod, and the end part of the screw rod is fixed with a friction plate. The electronic parking brake system has the advantages of greatly reducing the operational difficulty of a driver and improving the driving and operating comfort and convenience, along with low cost, simple structure, reliable control method, basic function of the traditional hand brake and assistant hill start function.

The invention discloses an intelligent cell charging system and a control method thereof, and an intelligent cell device. The intelligent cell charging system comprises an intelligent cell, a charger and a protection apparatus. The protection apparatus is connected between the intelligent cell and the charger. The protection apparatus is communicated with the intelligent cell so as to acquire state information of the intelligent cell, monitors work state information of the charger, determines that the intelligent cell generates an abnormity during a charging process according to the state information of the intelligent cell and/or determines that the charger generates an abnormity during the charging process according to the state information of the intelligent cell and the work state information of the charger and then disconnects charging connection between the intelligent cell and the charger. By using the intelligent cell charging system of embodiments in the invention, through arranging the protection apparatus, charging states of the intelligent cell and the charger can be monitored in real time and charging safety of the intelligent cell is ensured.

The invention discloses a terminal in dual modes, and control and comm. method for between inner chips. The mobile comm. terminal in dual modes includes first chip and second chip with serial port of comm. transceiver respectively. First chip is in use for first comm. mode and runs man-machine interface. Second chip is in use for second comm. mode. POWERON, IRQP, GREADY as output signals in first chip are realized by using GPIO. IRQG, PREADY, WORKINGDET are output signals. IRQG is realized by using falling edge to trigger interrupt. PREADY, WORKINGDET are realized by using GPIO. IRQG, PREADY, WORKINGDET as output signal in second chip are realized through GPIO. POWERON, IRQP, GREADY are as input signals. IRQP is realized by using falling edge to trigger interrupt.

The invention discloses a single-tank fused salt heat storage type electric boiler capable of exchanging heat with a heat tube as well as a heat exchange method. The single-tank fused salt heat storage type electric boiler comprises a fused salt heat storage tank, an electric heater and a heat exchanger, wherein the electric heater and the heat exchanger are mounted on the top of the fused salt heat storage tank in a flange connecting mode; a stirrer is further mounted on the center position of the top of the fused salt heat storage tank; the electric heater and the heat exchanger are separately arranged at the two sides of the stirrer; and the fused salt heat storage tank and the heat exchanger are separated by a partition. According to the single-tank fused salt heat storage type electric boiler capable of exchanging heat with the heat tube, flow of heat exchange fluid and outlet temperature are stable by regulating rotation speed of a three-way mixing valve or a stirrer, and a control method is simple and reliable; a valley-electricity heating technology and a single-tank fused salt heat storage technology are adopted, a fused salt pump and a fused salt pipeline are cancelled, and the heat tube exchanger and the electric heater are internally arranged, so that a fused salt heat storage system is greatly simplified, and flow of the heat exchange fluid and the outlet temperature are stable; and the single-tank fused salt heat storage type electric boiler has the remarkable advantages of a compact structure, low cost, fused salt freezing-blocking resistance and the like, can replace various coal-fired boilers which output hot water, hot oil and steam, and relieves the increasingly serious environmental pollution problem.

The invention relates to the technical field of kitchen appliances, in particular to a gas stove with lifting type dry-boiling prevention temperature sensors and a control method thereof. The gas stove comprises the temperature sensors, a lifting mechanism connected with the corresponding temperature sensors and used for driving the temperature sensors to rise and all and a control system connected with the lifting mechanism and used for controlling the temperature sensors to rise and fall. The gas stove further comprises weight sensors used for acquiring weight information. The control systemis connected with the weight sensors. By means of the gas stove and the control method thereof provided by the invention, the weight information of cookware is collected through the weight sensors; the gas stove judges whether the lifting mechanism needs to rise or not according to the collected weight information of the cookware. Accordingly, intelligent rising and falling of the temperature sensors are achieved, and control is simple and reliable.

The invention belongs to the technical field of high-speed wind tunnel tests, and discloses a continuous variable speed pressure control method for a subsonic flutter test. According to the continuous variable speed pressure control method, the area of a second throat is changed by adjusting a second node of an adjusting sheet of a supersonic speed diffusion section, namely, the Mach number is controlled by dynamically adjusting the position of the second node of a super-expansion section, and the position adjustment of the second node of the super-expansion section is added into a wind tunnel test Mach number control program. The continuous variable-speed pressure control method for the sub-transonic-speed flutter test is stable, reliable and high in control precision, air sources are saved, the total pressure linear change rate is 0.5 kPa/se-2 kPa/se-2 kPa/se-2 under the continuous variable-speed pressure driving mode, the Mach number control precision is within the range of 0.002, and the continuous variable-speed pressure control method can be used for the sub-transonic-speed flutter test.

The invention discloses a temperature cascade control system of a casting holding furnace and a control method of the temperature cascade control system. The temperature cascade control system comprises the holding furnace, a furnace gas thermocouple, a metal liquid thermocouple, a combustion-supporting air adjusting valve, a wind-control air proportional valve, a combustion-supporting draught fan, a natural gas output port, a nozzle and a PLC. The nozzle is installed on the holding furnace and connected with the combustion-supporting draught fan through a pipe to form a first pipeline, and the nozzle is connected with the natural gas output port through a pipe to form a second pipeline. The wind-control air proportional valve is connected between the first pipeline and the second pipeline, and a combustion-supporting air adjusting valve is arranged between the wind-control air proportional valve and the combustion-supporting draught fan. The furnace gas thermocouple and the metal liquid thermocouple are connected with the input end of the PLC, and the output end of the PLC is connected with the combustion-supporting air adjusting valve. The temperature cascade control system is simple and reliable in control, collecting of the temperature of the furnace gas and the temperature of the metal liquid and controlling over the combustion-supporting air adjusting valve are automatically finished, the whole process is controlled in a closed-loop mode, the oxidation burning loss of the metal liquid in the furnace is effectively reduced, and the production cost is saved.

The invention discloses an interactive control method of double congruent central coordinators, which includes the following steps that: 1) two coordinators are arranged in an electrical system network of an automobile, wherein the two coordinators are congruent coordinators with identical structure, two vehicle-mounted communication ports are respectively arranged on the two coordinators, the two vehicle-mounted communication ports are connected to the electrical system network of the automobile, and each coordinator is provided with an automatic arbitration module inside; 2) after the electrical system network of the automobile is powered on, the automatic arbitration modules arranged inside the two coordinators start to work; 3)the automatic arbitration modules arbitrate the control rights of the two coordinators, that is to determine that the two coordinators are respectively at a main control coordinator mode or a standby coordinator mode; and 4) after the automatic arbitration modules finish the arbitration over the control rights of the two coordinators and show the working modes of the two coordinators, the two coordinators enter the periodic working flow. The invention is unique in structural design and the two coordinators have strong interactive control and monitoring abilities, so the method is widely applicable in electrical systems of automobiles.

The invention discloses a direct-driven wind power plant inductive weak power grid grid-connected subsynchronous oscillation suppression device and a control method thereof. The invention mainly comprises a subsynchronous oscillation suppression device and an improved virtual synchronous machine control method thereof, which are used for suppressing subsynchronous oscillation of a direct-driven wind power plant under a condition of grid connection of an inductive weak power grid. The subsynchronous oscillation suppression device comprises a static synchronous reactive power compensator and a battery energy storage system. A storage battery is connected to a direct current side of a static synchronous reactive power compensator, and the control method is improved virtual synchronous machinecontrol. By using the direct-driven wind power plant inductive weak power grid grid-connected subsynchronous oscillation suppression device and the control method thereof, subsynchronous oscillationcaused by interaction between a direct-driven wind power plant and an inductive weak power grid can be well suppressed, and a solution is provided for treatment of direct-driven wind power plant inductive weak power grid grid-connected subsynchronous oscillation.

The invention relates to the field of engineering bionic technology, in particular to bionic sharkskin making use of a shape memory alloy artificial muscle longitudinally-injected drag reducer. The bionic sharkskin making use of the shape memory alloy artificial muscle longitudinally-injected drag reducer comprises a supporting base, a hardened conductive layer I, artificial muscle flexible units, a hardened conductive layer II, a shark scale imitation skin layer and a drag reducer longitudinal injection device, wherein each artificial muscle flexible unit comprises a shape memory alloy artificial muscle spring, a pulling head, a two-section electric heating rod and a connection conductive wire, and each shape memory alloy artificial muscle spring has a certain amount of supporting strength. Compared with the prior art, the bionic sharkskin making use of the shape memory alloy artificial muscle longitudinally-injected drag reducer has the advantages that by the adoption of the design of shape memory alloy artificial muscle, a micro mucus secreting mechanism of the sharkskin is simulated by means of the unique material characteristic that the double-trip memory effect is presented under the driving of transformation temperature of the shape memory alloy artificial muscle, the working mode and control method of injecting a micro amount of the drag reducer are more sensitive, controllable and reliable compared with existing means, service life is guaranteed effectively, and a beneficial example is provided for the engineering bionic technology, especially the bionic drag reduction skin manufacturing technology, in the aspect of structure and function bionics.

The invention provides a control circuit for a working state of a vehicle-mounted wireless charger and a control method thereof. The control circuit for the working state of the vehicle-mounted wireless charger has the advantages of simple principle and low cost and comprises a transmitting unit and a receiving unit, wherein the transmitting unit comprises a power supply interface, a transmission control circuit and a transmission coil, and the receiving unit comprises a reception coil, a reception control circuit and a charging interface. A key point is that the transmitting unit also comprises a current detection circuit used for detecting the current of the transmission coil, and the output end of the current detection circuit is connected with the transmission control circuit. Real-time detection of the output current of the transmission coil is performed by the transmitting unit through the current detection circuit, and whether the receiving unit is located in a receiving area or not is judged according to the output current of the transmission coil, so as to change the frequency of output signals according to the position of the receiving unit. The control circuit for the working state of the vehicle-mounted wireless charger has the advantages of simple circuit structure, high reliability, low cost and the like, and the control method is accurate and reliable.

A method of controlling a wind turbine, where a control signal for a controllable parameter of the wind turbine is determined repeatedly at successive time steps, and a control history including respective control values derived from or included in past control signals is stored. These control values stored in the control history are then used to determine an alert parameter for the controllable parameter, the alert parameter being a function of the variations of the control signals over time. The wind turbine is then controlled according to the most recent control signal only if the alert parameter is below an alert threshold, and otherwise according to a modified control strategy. The control method may be performed on pitch reference signals for controlling the individual and/or collective pitch of the blades. The invention further relates to a control system configured to perform the above control method, and a wind turbine comprising such system.

The invention relates to a constant-current and constant-voltage composite type floating hydrostatic guide rail, which comprises a main guide rail (1), a reverse preloading guide rail (2), a base (3) and a worktable surface (4), wherein the main guide rail (1) and the reverse preloading guide rail (2) form a closed type hydrostatic guide rail to realize a supporting function, the main guide rail (1) is a constant-current hydrostatic guide rail, and consists of a movable guide rail and a fixed guide rail, the main guide rail (1) on the worktable surface (4) is the movable guide rail, the main guide rail (1) on the base (3) is the fixed guide rail, and the reverse preloading guide rail (2) is the constant-current and constant-voltage composite type floating hydrostatic guide rail. The constant-current and constant-voltage composite type floating hydrostatic guide rail has the advantages that a high-speed and low-speed indexing function of a rotary table is met, and an assembly process and a control method are simple and reliable.

The invention discloses a control system for automatically adjusting climate room temperature and humidity, and a control method thereof. The control system comprises a total control system, the totalcontrol system is connected with a signal collection system, the signal collection system is respectively connected with a water supply tank and a dew point water tank, the water supply tank is connected with a temperature control system, a water supply system and the dew point water tank, temperature sensors are respectively arranged in the water supply tank and the dew point water tank, and thecontrol system is further connected with the temperature control system and the water supply system respectively. The control system disclosed by the invention has the advantages of improving the stability of the control system and the accuracy of steady state response, and improving the response speed of the system.

The invention discloses a gas appliance, a pulse ignition device used for the same, and a pulse ignition control method, wherein the pulse ignition device used for the gas appliance comprises: a timer; an ignition switch; a solenoid valve thermocouple loop in parallel connection with the timer; and a pulse igniter respectively connected with the timer, the ignition switch, and the solenoid valve thermocouple loop. When the ignition switch is triggered, the pulse igniter controls a solenoid valve in the solenoid valve thermocouple loop to open; the timer is determined to start timing while the timing signal of the timer is detected; and the solenoid valve is controlled to close when timing ending of the timer is detected. According to the invention, through the parallel connection of the timer with the solenoid valve thermocouple loop, no automatic flame-out phenomenon occurs in the timing period when the solenoid valve thermocouple loop is normal, and thus the reliability of the timing function of the gas appliance is guaranteed.

The invention discloses a method for controlling the flow rate of freezing medium in a fixed-frequency ice accumulating air-conditioning unit and a device thereof. The method comprises: at least more than one temperature sensors are distributed in an ice accumulating groove along the horizontal direction and along the depth direction, and at least one in heat exchange pipes of a heat exchanger in the ice accumulating groove is provided with the temperature sensors; the temperature value in the ice accumulating groove is acquired within the preset time, the average water temperature is calculated, and the temperature at an outlet of the heat exchanger and the average temperature at the middle part of a heat exchange pipe are acquired; when the average water temperature is judged to be within the preset range of regulating the opening of a throttle valve, the difference value between the temperature at the outlet of the heat exchanger and the average temperature at the middle part of the heat exchange pipe is judged, and the opening of the throttle valve is regulated according to the preset method. The invention can accurately measure the temperature, avoid liquid accumulating in an evaporator, enlarge the heat exchange area and improve the cold accumulation COP.

The invention relates to a self-adaptive event triggering-based wheeled robot constant-speed linear formation control method. According to the method, wheeled robots comprise a leader robot and a plurality of follower robots. The method comprises the following steps that: 1) the expected relative positions of the follower robots and the leader robot during constant-speed linear formation are set, an event triggering mechanism-based external signal observer is constructed, and the observation values of each follower robot relative to the leader robot are acquired; 2) the position errors of the follower robots and the leader robot are calculated, and the standard positions and standard control input of the follower robots are obtained on the basis of a robot linearization model; and 3) a fully distributed self-adaptive controller is constructed on the basis of the standard positions and standard control input of the follower robots, and the real-time system control input of the follower robots is obtained. Compared with the prior art, the method has the advantages of high accuracy, high reliability, saving-energy performance and high stability.

The invention discloses a control method for a submerged-arc welding platform for an intersection-line seam of a thick-wall large-size cylindrical weld element. The control method includes that confirming the weld element size and welding speed, and confirming a proper discrete step length; discretizing the intersection line to obtain coordinate values of a discrete welding spot; gathering an actual pitch angle and an actual rotating angle of the weld element through a sensor and using as two feedback quantity, comparing with pitch angle and rotating angle control reference values to obtain errors, using as the input of pitch and rotating position PID controllers, and using the output of the two position PID controllers as the speed control reference values of a roller drive motor and a hydraulic pump drive motor; comparing the three degree of freedom position control reference value of the welding gun with an actual welding gun position value detected by the sensor to obtain an error, and using the output of position PID controllers in three directions of the welding gun as speed control reference values of servo drive motors corresponding to three directions of a mechanical arm of the welding gun to realize closed loop control. The control method for the submerged-arc welding platform for the intersection-line seam of the thick-wall large-size cylindrical weld element is capable of effectively and stably controlling the submerged-arc welding platform for the intersection-line seam of the thick-wall large-size cylindrical weld element and enables the high-quality weld joint welding to be guaranteed.

The invention discloses a process for preparing pyrogallol through coupled heating, which comprises using gallic acid as raw material, carrying out intermittent process flows including drying, sublimation, cooling down crystallization and vacuum decarboxylation with a totally coupled heating system and a semi-coupled cooling system, thus the pyrogallic acid can be crystallized and separated.

The invention relates to a method for realizing the gang control of three Z axes in a numerical control machine system, which is based on the principle that when the three Z axes are adjusted to have the same workpiece coordinate, the three Z axes are uniform in motion control for the same workpiece so as to obtain the effect that information calculated from one axis can simultaneously control the three axes, and the motion of the three axes is correct actually. The method comprises the following steps: taking one axis as an effective axis by the system and calculating the motion control information of the Z axis; storing the information whether each Z axis moves or not by the system according to external commands and mutually switching the three Z axes from a motion state to a non-motion state; sending the motion control information of one Z axis to other Z axes by the system. The control method can effectively control a plurality of Z axes to link together in the batch processing of a numerical control machine, enhance working efficiency and reduce processing time. The control method is effective and reliable.

The invention provides a water heater integrated system. The water heater integrated system comprises a water heater module, an air path, an air path control module and at least one air heat function module. The water heater module comprises a water heater water storage tank, an air heating interlayer and a water heater heat preservation layer. The air heating interlayer is arranged between the water heater water storage tank and the water heater heat preservation layer. The air heating interlayer conducts inflation through the air path, and the heated air enters the air heat function module through the air path under the action of the pressure difference. The air path control module is connected with the air heating interlayer, the air path and the air heat function module and used for controlling the running condition of the water heater integrated system. The invention further provides a control method of the water heater integrated system, and multiple functions such as bathing, air blowing and brush drying can be integrated.