30results about How to "Accurate control results" patented technology

The invention relates to the field of air conditioner control, particularly to an air conditioner control method and system based on a basal metabolic rate and an air conditioner. The method comprises the following steps: calculating the basal metabolic rate of a user according to the height and body weight of the user, calculating the hot sensation or cold sensation degree of the user, controlling an operation mode of the air conditioner according to the cold sensation degree and the hot sensation degree, for example, adjusting the air conditioner temperature, air conditioner humidity, air conditioner air volume, air conditioner on-off time, air conditioner continuous temperature variation curve and the like, so that the air conditioner can be most appropriately controlled according to the physique and figure of the user, the air conditioner requirements of people of different figures can be met, and the air conditioner is more comfortable to use in a multiple-people environment; meanwhile, the operation process is simple, the control result is accurate, the application range is wide, and the commercial value is high.

The invention provides a temperature control system for a CPS-based ring spinning intelligent workshop. The temperature control system for a CPS-based ring spinning intelligent workshop comprises a physical layer, a communication layer, an information layer and a control layer. The physical layer is each physical entity related to the temperature of the ring spinning intelligent workshop. The communication layer collects real-time temperature data of each physical entity of the physical layer and transmits the real-time temperature data to the information layer through the ring spinning industrial internet. The information layer receives the real-time temperature data and performs intelligent calculation to form a mirror image of the physical entity. And the control layer adjusts the air outlet volume, the air outlet direction and the air outlet temperature of the air conditioner of the ring spinning intelligent workshop according to the mirror image of the physical entity so as to realize the closed-loop accurate control on the temperature of the ring spinning intelligent workshop. The invention also provides a CPS-based ring spinning intelligent workshop temperature control method, and a control strategy is formed by analyzing large data of the ring spinning temperature to realize the closed-loop accurate control on ring spinning intelligent workshop temperature. The performance of the temperature control system is reliable and the control result is accurate, and the temperature control system is suitable for large-scale popularization and use.

The invention discloses a human body leg movement energy collection system and a collection method. The human body leg movement energy collection system comprises a human body leg movement energy collection device, an electric energy management module and an energy storage module, wherein the human body leg movement energy collection device comprises an outer shell, a generator and a potentiometer are fixed on the outer shell, a working gear is fixed on a rotor of the generator, the bottom of the inner side of the outer shell is rotatably connected with a first rotary shaft, an oscillating bar and a sector gear are fixed on the first rotary shaft, the free end of the oscillating bar is located on the outer side of the outer shell, the sector gear is located on the inner side of the outer shell, an angle slider of the potentiometer is fixedly connected with the oscillating bar, and a gear box used for accelerating is arranged between the sector gear and the working gear. The human body leg movement energy collection device collects movement energy selectively; the energy is collected in a stage that a shank falls; if not being collected, the energy can be wasted; during electric energy collection, additional working of a human body is not needed, and the comfort of the human body is improved; the human body leg movement energy collection device is relatively compact in overall structure and relatively long in service life.

The invention discloses a pressure and flow electronic control system for a sample inlet of a chromatograph, comprising: an air inlet passage, a sample inlet, a purge passage, a split flow passage, a chromatographic column passage; an air inlet passage, a sample inlet and a purge The channel forms a T-shaped channel structure. The sample inlet includes a vaporization chamber, a split channel connecting the split channel, and a septum installed on the top of the vaporization chamber. The passage is provided with an electronic air intake control device, the purge passage is provided with an electronic purge control device, and the split flow passage is provided with an electronic split flow control device; the present invention discloses controlling the corresponding ratio by using the electronic mode respectively in the split flow and splitless sample injection modes. The control part can quickly balance the pressure and flow rate in the injection port, improve the stability of the gas chromatograph sampling system, and avoid many shortcomings of manual adjustment.

The invention discloses a controller task switching method, which comprises the following steps of: after receiving a switching instruction, obtaining context data of a current task, and storing the context data into a task stack memory and a data backup area; after a signal for re-executing the current task is received, judging whether the context data in the task stack memory is changed or not;if not, reading the context data in the task stack memory and executing the current task; and if yes, performing fault recording and alarming, obtaining context data from the data backup area, and executing a current task. According to the method, when context data of a current task in a task stack memory is changed, the context data is read from a data backup area and the current task is executed, so that the context data of the current task before and after task switching is ensured to be unchanged, and the running safety of a controller is further ensured. In addition, the invention furtherprovides a controller task switching device, controller task switching equipment and a computer readable storage medium, which also have the above beneficial effects.

The invention provides an SO2 protective gas system with a transitional roll platform in online floating-process film coating of glass and an operation method. The protective gas system comprises an SO2 gas supplying system, a N2 auxiliary-gas supplying system and a gas-sealing gas supplying system. The operation method is characterized in that two gas seals are arranged at the positions of a transitional roll platform close to a tin groove and an annealing kiln, an SO2 gas pipe is positioned between the two gas seals, gas sealing is carried on the transitional roll platform and the tin grooveby a front-end gas sealing pipe, and gas sealing is carried out on the joint positions of the transitional roll platform and the annealing kiln by a tail-end ; meanwhile, the lower sides of a first roller and a final roller of the transitional roll platform are respectively provided with a gas seal. The protective gas system provided by the invention has the beneficial effects that the productionneeds are met to a greatest extent, the consumption of SO2 gas is greatly reduced, the operation is convenient, the operation risk of workers is reduced, the adjustment time is saved, the pollution and the hazard to the environment are reduced, and meanwhile, the influence of SO2 on the tin groove, the annealing kiln and the film coating is greatly reduced.

The invention provides an asynchronous-synchronous control method and system for the back-to-back flexible direct-current power transmission system. When the back-to-back flexible direct-current powertransmission system runs stably, parameter information corresponding to three-phase voltage of a power grid side is extracted according to an operation mode of the current power grid side, so that different parameter information is adjusted according to different operation modes, thus obtaining corresponding power instructions, and controlling the power flow direction of the back-to-back flexibleDC power transmission system according to different power instructions; thus, the asynchronously interconnected power grids at the two ends can achieve mutual power support; when the power of one endis insufficient, the energy of the power grid at the other end can be allocated to achieve power support, the control result is accurate, and the electric energy quality of the whole power grid is effectively improved.

The invention discloses a PID adjusting method of a stable oxygen flow adjusting valve and a control system thereof, and relates to the technical field of oxygen flow control. The method comprises thefollowing steps of: the step 1, setting a fixed opening degree of a regulating valve, and continuously calculating a difference value [Delta]F between a set target value and an actual value; the step2, dividing the difference value [Delta]F between the set target value and the actual value into an interval of more than or equal to 5%, an interval of more than or equal to 4%, an interval of morethan or equal to 3%, an interval of more than or equal to 2%, an interval of more than or equal to 1% and an interval less than 1% according to target requirements, respectively setting proportionality coefficients. The larger the [Delta]F is, and the larger the set proportionality coefficients are, so that the adjusting speed is accelerated; the smaller the [Delta]F is, and the smaller the set proportionality coefficients are, so that the higher the adjusting precision is, and the smaller the fluctuation is; and by means of the adjusting method, a converter with the oxygen supply intensity reaching 39000 cubic meters per hour can reach a target value, so that the adjusting speed is increased, the smaller the [Delta]F is, and the smaller the set proportionality coefficients are, so that the higher the adjusting precision is, and the smaller the fluctuation is. The control target is achieved, and the technological requirements are well met.

The invention provides an automobile air-conditioner control method, comprising the following steps that: firstly, a main control chip sends an instruction and transmits the instruction to an external application apparatus via a circuit; secondly, the external application apparatus acts and feeds an actual state back to the controller main chip after receiving the instruction; and finally, the main controller chip compares the received feedback signal with a standard, corrects a control signal, and sends a new instruction to the external application apparatus. In the method provided by the invention, the defect of the prior art is overcome; and the control signal is dynamically corrected through feedback, read and calculation of the external application apparatus to form a closed control system, so that the control result is more accurate and is not affected by the outside.

The invention discloses a plasma processing device and a gas supply method, the plasma processing device comprises a reaction cavity, a base is arranged in the reaction cavity, a gas supply device conveys reaction gas into the reaction cavity, and the gas supply device comprises a gas main pipeline and a plurality of gas shunting conveying pipelines; a flow control valve is arranged on each of the multiple gas shunting conveying pipelines, and the corresponding relation between the flow coefficients of the multiple flow control valves and the electric signals is stored in a controller; and the proportional relation of the target gas flow of the multiple gas flow dividing conveying pipelines is set, and the controller conveys corresponding electric signals to the flow control valves according to the flow proportion of the multiple gas flow dividing conveying pipelines so as to adjust the valve opening degree of each flow control valve. According to the invention, one-to-two-path, one-to-three-path or even one-to-more-path division can be realized, accurate division can still be realized when a flow feedback module is not arranged, less time is consumed, the response speed is high, a control result is basically not influenced by differences of all valves, and the practicability is high.