6results about How to "Precise and effective control" patented technology

The embodiment of the invention discloses a vehicle power takeoff control method, device and equipment and a medium, the control method is applied to a vehicle provided with a power takeoff, and the control method comprises the steps that firstly, whether the power takeoff of the vehicle enters a working mode or not is judged; the working mode comprises a driving mode or a parking mode; if the power takeoff enters the working mode, a clutch of the power takeoff is controlled to be combined with a driving shaft of the vehicle; the running speed of the vehicle is further obtained, and whether the running speed exceeds the power takeoff calibration speed or not is judged; and the running speed and the power takeoff calibration speed are judged, and if the running speed does not exceed the power takeoff calibration speed, a constant-speed cruise key of the vehicle is controlled to be used for adjusting the rotating speed of the power takeoff. By adopting the control method provided by the embodiment of the invention, the power takeoff can be subjected to adaptive working state adjustment under different conditions, the rotating speed of the power takeoff can be further adjusted better, and the power takeoff can be controlled more effectively and accurately.

The utility model discloses a chain tensioning device for a tape winder, and relates to the field of chain tensioning. The chain tensioning device for the tape winder comprises a first installation part and a second installation part, a movable tensioning wheel is arranged on the outer wall of the first installation part, a fixed tensioning wheel is arranged on the second installation part, a hydraulic cylinder is installed between the first installation part and the second installation part, and a pressure sensor is arranged below the movable tensioning wheel. According to the chain tensioning device for the tape winder, a hydraulic cylinder is started, a first mounting part is pushed to rotate, the distance between a movable tensioning wheel and a fixed tensioning wheel is increased, a chain is tensioned, at the moment, the movable tensioning wheel has the trend of moving downwards along a supporting shaft, pressure is transmitted to a pressure sensor through a spring, and the pressure sensor monitors the pressure value in real time; and when the pressure reaches a threshold value preset by a program, the hydraulic cylinder is controlled to stop stretching according to a feedback signal, so that the chain is kept in a reasonable tensioning state, the structure is simple, and control is accurate and effective.

The invention provides a shutdown method, device and system of a fuel cell system and a vehicle, the method is applied to the technical field of fuel cells, and the method comprises the following steps: receiving a shutdown instruction of the fuel cell system, and obtaining stack impedance of the fuel cell system based on the shutdown instruction; based on the stack impedance, judging whether the fuel cell system meets a preset shutdown condition or not; and if the fuel cell system does not meet the preset shutdown condition, purging a fuel cell cathode in the fuel cell system until the fuel cell system meets the preset shutdown condition, and controlling the fuel cell system to be shut down. According to the method, whether the water content of the fuel cell meets a certain requirement or not is judged through the electric pile impedance of the fuel cell system, and the problems that the water content control is inaccurate and the next start-up is influenced due to the fact that the water content is controlled through regular purging in the prior art are solved, so that the water content state of the fuel cell is more accurately and effectively controlled, and the efficiency is improved. And the next starting of the fuel cell system is facilitated.

The invention provides an intelligent bonding copper wire equipment cluster control method and system based on environment Internet of Things, and relates to the technical field of bonding copper wire production control. The method comprises the following steps: acquiring cluster production control historical data, and performing monitoring feature extraction based on a monitoring category to form cluster production control parameter feature data; and collecting cluster production control real-time data, and performing production state analysis in combination with the cluster production control feature data to form production state real-time monitoring result data. According to the method, a monitoring system aiming at the control form of the whole bonding copper wire production cluster is constructed by utilizing the environment internet of things, so that an intelligent regulation and control data basis is provided for fully meeting the high-precision and high-quality production control requirements of the bonding copper wires.

The invention provides a crankcase ventilation control method and a vehicle, the method is applied to a crankcase ventilation control system, and a crankcase in the system communicates with an air inlet unit through an air supplementing pipeline; an air supply valve is arranged on the air supply pipeline; the method comprises the steps that the hydrogen concentration in a crankcase is determined based on the obtained engine rotating speed and output torque; in response to the fact that the hydrogen concentration in the crankcase is larger than or equal to a preset concentration value, the gas supply opening degree of a gas supply valve is determined; and the opening degree of a gas supplementing valve is adjusted to the gas supplementing opening degree, so that the hydrogen concentration in the crankcase is reduced to be lower than a preset concentration value. By controlling the opening degree of the air supply valve, the air supply amount entering the crankcase is effectively controlled, namely, the hydrogen concentration in the crankcase can be rapidly controlled within a reasonable range, and the explosion risk is avoided.

The utility model discloses a kind of multi-channel intelligent temperature control box applied to flexible surface heating system, it is characterized by;Remote controller (1) is connected temperature control module (2), concentrator (3) respectively by wire, temperature control module (2) is connected concentrator (3), relay module (4), switching power supply (5), input-output module (9) respectively by wire, concentrator (3) is connected man-machine interface (13) by wire, relay module (4) is connected terminal (6), input-output module (9) respectively by wire, switching power supply (5) is connected terminal (6) respectively by wire, terminal (6) is connected power circuit breaker (8), input-output module (9) respectively by wire, load power switch (7) is connected power circuit breaker (8) by wire.The utility model modularization integration, visualization, and easy operation, convenient to use.