15results about How to "Precise and reliable control" patented technology

The invention belongs to the technical field of water treatment, and particularly relates to a control method for use of a fine treatment system filter. And slowly opening a valve of the standby filter, and connecting the cation bed filter and the mixed bed filter into a fine treatment system. And controlling the flow of the filter put into operation through the drop value of the flow of the filter in operation. When the flow values of the other four running filters are respectively reduced by 2 kg / s, namely the total flow is reduced by 8 kg / s, the valve adjusting operation of the filter is suspended, waiting is carried out for 1 h, then the adjusting valves are continuously opened until the flows of the five filters are equal, and then the failed filter is withdrawn. The slow feeding process eliminates the influence of the switching operation of the cation bed filter and the mixed bed filter of the condensate polishing system on the water quality of the secondary loop of the unit; and the slow casting operation parameters are accurately and reliably controlled.

The invention discloses a foldable multifunctional coarse cereal cultivation all-in-one machine which comprises a Z handrail and a machine body frame. The left end of the Z-shaped handrail is connected with the handrail connector, and the Z-shaped handrail is connected with the long vertical rod through the inclined supporting rod connecting block. The Z handrail connector is connected with the upper U-shaped fork through a rotating shaft and is fixed at the top end of the long vertical rod through an inner hexagon bolt; a rotary tillage head, a plowshare, a throttling block, a seed flow control shaft, a water tank, a ball valve, a water pipe, a burying head and the like are installed on the machine body frame. The rotary tillage head is driven by the stepping motor and the belt pulley to rotate, the rotary tillage head, the plowshare, the seed flow control shaft, the water pipe and the burying head sequentially perform corresponding operation along with advancing of the cultivator, and the cultivation process of coarse cereals is achieved. According to the device, five steps of rotary tillage, ditching, seeding, watering and burying are achieved at a time, the cultivation efficiency is greatly improved, and the labor intensity of farmers is reduced. In addition, the device can be stored in a folding mode, space is saved, and carrying and transferring are convenient.

The invention provides a pneumatic suspension system for simulating a zero-gravity environment and a control method. The pneumatic suspension system comprises a supporting assembly, a suspension assembly and a control system. The supporting assembly comprises a box, a top plate and a spindle, the top plate is arranged in the box, vertical guide rails are arranged on two sides of the box, the spindle penetrates through the top plate and the box bottom, and the top is used for hanging a tested object. The suspension assembly comprises a beam, a cylinder barrel, an air floatation piston, a piston rod and an air source, the beam slides along the guide rail, an airflow channel is arranged in the beam and connected with the air floatation bearing, the air floatation piston is arranged in the cylinder barrel, the cylinder barrel is divided into an upper cavity and a lower cavity, the upper cavity is communicated with the atmosphere, the air source supplies air to the lower cavity, and the two ends of the piston rod are connected with the air floatation piston and the beam respectively. And the control system controls the gas transmission work of the gas source. According to the pneumatic suspension system, friction of the system is effectively reduced, dynamic self-adaptive balance is achieved through the control system, and therefore the more accurate and stable suspension effect is provided.

The present application belongs to the technical field of ocean wave power generation, and particularly relates to a quick detachable and mounted OWC pneumatic structure, which comprises a bottom-opened rectangular air chamber, the side wall of the air chamber is provided with an embedded sliding groove matched with the wharf track, the top is provided with a valve structure, the valve structure realizes three working modes of complete closure, bidirectional conduction and only downward conduction through the cooperative action of the fixed valve piece, the moving valve piece stator and the moving valve piece flap, the air chamber can realize self-adaptive adjustment of the tidal level and quick disassembly preparation through controlling the valve mode and matching the sliding groove sliding along the track combined with the locking mechanism. The present application solves the problems of inconvenient disassembly and inability to adapt to the change of tidal level of the existing mounted OWC device, has the advantages of flexible deployment, convenient maintenance and stable energy efficiency, and is suitable for the green transformation of the existing port.

The application discloses an audio playing system, method, driving device and storage medium, and relates to the technical field of audio playing systems. The audio playing system comprises an audio playing platform, which comprises a receiving module, an arbitration module and a first sending module. The receiving module is used for receiving a focus request. The arbitration module is used for performing focus arbitration processing in response to the focus request and obtaining a focus arbitration result. The first sending module is used for sending the focus arbitration result to at least a sound source object corresponding to the focus request, so that the sound source object sends audio data to a shared sound card according to the focus arbitration result. The second sending module is used for sending the focus arbitration result to a control module, so that the control module controls the shared sound card to play the audio data according to the focus arbitration result. The application provides a dedicated audio playing platform to perform focus arbitration, which can effectively coordinate the sound emission sequence in the audio playing system, control the shared sound card to play the audio data, avoid simultaneous sound emission, and improve driving safety.

The utility model discloses a deformed steel bar clapper type brake which comprises a clapper brake block, a leveling spring, a driving lever and a brake cylinder, the brake cylinder is hinged to an apron board protection platform through a pin shaft, the end of a piston rod of the brake cylinder is hinged to the tail end of the driving lever, and the middle of the driving lever is hinged to the front end of the apron board protection platform. The front end of the driving lever is bent and hinged with a beating plate brake block; the leveling spring is arranged between the back surface of the beating plate brake block and the front part of the driving lever; an apron board roller way supporting wall plate is arranged below the apron board protection platform, and an apron board roller way driven by a roller way motor is arranged on the wall plate.

The present application provides a VR video playback control method and system. Since what are determined are the video recording subjects of the target scene and the video recording subjects with defects in the target scene, based on the video recording subjects of the target scene and the video recording subjects with defects in the target scene, the video recording subjects without defects in the target scene are determined to be the distribution in sequence order. In this way, the distribution without defects can be determined more accurately, so that the confidence of the sample data obtained by performing the optimization operation on the subjects without defects is high. In addition, since the video recording subjects without defects in the target scene are determined first, and then the optimization operation is performed on the subjects without defects, a video optimization result is generated according to the optimization operation, and a video playback instruction is determined in combination with the video optimization result. Therefore, accurate and reliable control of video playback can be achieved.

The utility model discloses an automatic blanking device and food processor relates to life electric appliance field, including the charging barrel and set up the switch piece below the charging barrel, the charging barrel and switch piece enclose and form the material holding chamber, the one end of switch piece with the charging barrel spacing cooperation, the other end with the charging barrel through the articulated shaft, the articulated shaft is horizontally set up, and the articulated shaft is equipped with the material holding chamber. The switch piece comprises a bottom plate forming the bottom wall of the material containing cavity and a side plate arranged on the edge of the bottom plate and extending upwards, the side plate and the material barrel define the peripheral wall of the material containing cavity, the peripheral wall, formed by the side plate, of the material containing cavity moves, and therefore the materials which are squeezed mutually do not squeeze each other and fall into the pulping cavity under the action of gravity, and the pulping efficiency is improved. And in the process that the side plates rotate along with the bottom plate, the materials adhered to the side plates can be thrown into the pulping cavity under the action of centrifugal force in the overturning process, so that the materials adhered to the side plates fall off, sufficient discharging is guaranteed, and no residues exist in discharging.

The invention belongs to the field of new energy battery performance testing, and discloses a charging and discharging control method between charging and discharging equipment and a battery and related equipment.The method comprises the steps that firstly, sensor information of the battery is obtained in real time, and the sensor information of the battery is updated in real time; generating a charge-discharge control signal according to a judgment result that the sensor information of the battery meets a preset condition, and finally transmitting the charge-discharge control signal to charge-discharge equipment, so that the charge-discharge equipment completes charge-discharge operation on the battery according to the charge-discharge control signal; by adopting the method, reliable and accurate control between the charging and discharging equipment and the battery can be realized on the premise of not depending on the operation skills of testers, so that the control problem caused by different protocols between the charging and discharging equipment and the battery is solved, the test precision and safety are improved, and the test cost is reduced. And resource waste and environmental protection problems caused by comprehensive replacement of new equipment are reduced, and high difficulty and economic cost of hardware upgrading are avoided at the same time.

The invention provides a vapor-liquid two-phase flow generation system for reactor core heat exchange research, comprising: a vapor-water mixer having a first inlet, a second inlet and a first outlet; the steam generator is used for producing steam; the saturated water heater is used for producing saturated water, the saturated water heater is provided with a saturated water inlet and a saturated water outlet, the saturated water outlet is communicated with an inlet of the second pipeline, and an outlet of the second pipeline is communicated with the saturated water inlet through a water return pipeline; an outlet of the second pipeline is communicated with a second inlet of the steam-water mixer through a third pipeline, a water pump is arranged on the second pipeline, a water return on-off valve is arranged on the water return pipeline, and a third on-off valve is arranged on the third pipeline. Therefore, the vapor-liquid two-phase flow generation system for the heat exchange research of the reactor core has the advantages of convenience in accurate and reliable control and long-term stable operation.

The present invention provides an automatic lubrication system in a mold guide assembly, which relates to the field of mold lubrication technology, including a guide column and a guide sleeve connected to the upper part of the guide column, an oil storage tank is arranged inside the guide column, a central liquid riser is arranged at the central axis inside the guide column, the upper end of the central liquid riser is connected to a first one-way valve, the upper end surface of the first one-way valve is flush with the upper end surface of the guide column, the bottom of the central liquid riser is connected to a second one-way valve, a piston is arranged below the second one-way valve, a communicating vessel is arranged outside the second one-way valve and the piston, the communicating vessel is threadedly sealed and tightened with the inner side of the guide column, and the lower end of the piston is connected to a servo motor. The present invention provides an automatic lubrication system in the guide column and the guide sleeve, fully and reasonably utilizes the internal space of the mold guide column, can accurately realize the quantitative control of lubricating oil, is easy to disassemble, simple to maintain, meets production needs, and improves the service life of the mold.

The invention relates to the technical field of bio-organic fertilizer fermentation, and discloses bio-organic fertilizer fermentation control equipment which comprises a fermentation tank, a stirring mechanism is arranged in the fermentation tank, a temperature and humidity adjusting mechanism is arranged on the outer side of the fermentation tank, and an intermittent feeding mechanism is arranged in the fermentation tank. A pressure adjusting mechanism is arranged on the outer side of the fermentation tank; the temperature and humidity adjusting mechanism comprises a water tank and a ventilation pipe, a supporting frame is installed on the outer side of the fermentation tank, the bottom of the water tank is fixedly connected to one side of the top of the supporting frame, a water pump is installed on the other side of the top of the water tank, and the input end of the water pump is fixedly connected with an input pipe. Water in the water tank can be conveyed into the fermentation tank through cooperation of the humidity sensor and the water pump, so that the humidity of the fermentation environment is controlled, and the specific requirement of microorganism growth on the humidity is met. And the sponge on the inner wall of the spray head realizes slow dripping of water, so that sudden humidity change caused by one-time excessive water adding is prevented.

The present invention discloses an engine closed-loop control method, system and medium for identifying the duration of injection, which relates to the field of engine closed-loop control. The method comprises: obtaining a pressure signal in a high-pressure gas pipe of a fuel injector, and determining the injection opening time and injection ending time of the fuel injector based on the pressure signal; determining the injection duration based on the injection opening time and the injection ending time; inputting the pressure signal and the injection duration into a neural network model to obtain injection amount prediction data; applying a fuzzy PID control algorithm based on the injection amount prediction data and a target injection amount to obtain an injection pulse width signal that meets the target injection amount; and controlling the fuel injector to perform injection operation based on the injection pulse width signal. Compared with the traditional open-loop control method, the present invention can realize online feedback of the injection amount, and the injection amount control is more accurate.

This application discloses an electronically controlled aging test unit, an aging test cabinet, and an electronically controlled aging test system, relating to the field of electronically controlled equipment testing technology. The electronically controlled aging test unit includes a power interface for receiving DC power; an analog handheld controller signal output circuit connected to a programmable controller to generate multiple analog control signals; a motor drive board connected to the power interface to receive power; the motor drive board is also connected to the analog handheld controller signal output circuit to receive control signals; and an energy recovery circuit connected to the motor drive board to recover energy. By integrating the energy recovery circuit, the electrical signals output by the motor drive board are reused, reducing overall energy consumption and energy waste, thus achieving high resource utilization.

The invention relates to a full-speed-domain efficient control method suitable for an electro-magnetic motor, and the method comprises the steps: collecting the current actual power of the electro-magnetic motor, judging the working state of the electro-magnetic motor and a current operation region in combination with a preset speed domain judgment condition, and calculating a corresponding weighting coefficient; and according to the operation area judgment result of the electro-magnetic motor, the optimal dq-axis current and excitation current under the base speed condition, the switching area condition and the high speed condition are correspondingly determined by utilizing an off-line torque-current distribution table, a pre-established current model and a pre-established voltage model in combination with a weighting coefficient and an air gap flux linkage control module, and the optimal dq-axis current and excitation current under the base speed condition, the switching area condition and the high speed condition are obtained. A current given non-impact switching mode is adopted, the optimal dq-axis current and excitation current under the base speed condition, the switching area condition or the high-speed condition are selected to be output according to the actual operation condition of the electro-magnetic motor to serve as control current reference values, and control over the electro-magnetic motor is achieved. Compared with the prior art, full-speed-domain efficient control over the electro-magnetic motor can be achieved.