5results about How to "Flexible speed control" patented technology

The utility model discloses a filter device of circulating backwash, including filter casing, install a set of bearing seat in the inner chamber of filter casing upper end, bearing seat is sealed with a set of filter core rotation connection, and the rotation action can be realized to filter core through drive assembly, and cooperate transmission assembly and drive cleaning brush rotation, the utility model centrifugal force throws out high -speed water flow, and the impact force of impurity is greatly promoted, and the mechanical cleaning of cooperation cleaning brush, under double effect, can more efficiently remove strong viscosity, firmly attached contaminant and deep pore small impurity, and backwash efficiency improves obviously, and high -efficient backwash reduces backwash frequency and time, and water flow energy consumption is reduced, simultaneously, the filter core is because clean thoroughly, and the service life is extended, and the frequency of replacement is reduced, and the overall operation cost is reduced.

The application belongs to the technical field of server heat dissipation, and particularly relates to a server risk control heat dissipation method and device, a terminal and a medium. The method comprises the following steps: executing a first speed regulation strategy: acquiring a temperature parameter of a central processing unit, performing a differential calculation based on the temperature parameter, a preset target temperature and a preset fan duty cycle at a moment to obtain a first fan duty cycle; executing a second speed regulation strategy: acquiring an ambient temperature at a server air inlet, comparing the ambient temperature with a first speed regulation curve to obtain a second fan duty cycle; determining a high numerical value duty cycle between the first fan duty cycle and the second fan duty cycle, and determining the high numerical value duty cycle as a target fan duty cycle; and controlling the fan of the server to operate based on the target fan duty cycle. In this way, the PID closed-loop speed regulation strategy and the openloop open-loop speed regulation strategy are synchronously executed, the fan duty cycle with a higher numerical value is selected to control the fan to operate, and the purpose of flexibly controlling the rotating speed of the server fan is achieved.

The invention relates to the technical field of washing lines, in particular to a full-automatic dry tea washing line. In order to solve the problems that pollutants are easily attached to the surfaces of dry tea leaves in the production, processing, storage and transportation processes, so that tea customers need to soak and wash the tea leaves at the head before drinking, the operation steps are increased, and the drinking convenience is reduced, the following technical scheme is provided: the device comprises a first electric conveying belt which is obliquely arranged; the mesh surface conveying belt is arranged in the output direction of the first electric conveying belt, and the conveying surface of the mesh surface conveying belt is a fine mesh surface; the cleaning mechanism is positioned between the first electric conveying belt and the mesh surface conveying belt and is used for cleaning the dry tea leaves; the vibration conveying assembly is arranged on the side, away from the first electric conveying belt, of the net face conveying belt. According to the invention, the step of head brewing before drinking by a teacup can be omitted, the drinking convenience is improved, meanwhile, slight loss of tea flavor caused by pouring of the head brewing is avoided, and the drinking experience is optimized.

The utility model discloses a small-sized pneumatic water-milling belt sander for polishing narrow parts, which comprises a shell, an inlet end of the shell is fixedly connected with an air inlet joint, an inlet end of the air inlet joint is communicated with an external air source, a silencer is fixedly connected between the outer side wall of the air inlet joint and the inner side wall of the shell, and the air inlet joint is communicated with the silencer. The outlet end of the air inlet connector is fixedly communicated with an air filter, an air flow adjusting valve is fixedly connected to the inner side wall of the shell, the inlet end of the air flow adjusting valve is communicated with the outlet end of the air filter, an opening and closing pin is slidably connected into the air flow adjusting valve, one end of the opening and closing pin extends out of the shell, and a trigger is hinged to the outer side wall of the shell and abuts against the opening and closing pin. A pneumatic motor is fixedly connected into the shell, and the inlet end of the pneumatic motor communicates with the outlet end of the air flow adjusting valve. According to the belt sander, a series of technical problems that a traditional belt sander is prone to vibration at a high rotating speed, noise is too large, and operation is unstable are effectively solved, and the polishing quality and the working efficiency are remarkably improved.

The utility model discloses a kind of control systems of soft ground cleaning robot, including main control module, CAN bus drive unit, motor drive unit and power module;The CAN bus drive unit is connected by CAN transceiver chip CAN communication interface of the main control module;The motor drive unit is composed of opto-coupler isolation circuit and H bridge drive circuit;The opto-coupler isolation circuit includes opto-coupler chip, and the input end of opto-coupler chip is connected with the PWM signal end output by main control module;The H bridge drive circuit includes half bridge drive chip and two power MOSFET tubes;The output end of opto-coupler chip is connected with the input end of half bridge drive chip, and the output end of half bridge drive chip is connected with the gate of power MOSFET tube, and the source and drain of two power MOSFET tubes constitute H bridge upper and lower bridge arms, and the midpoint of bridge arm is connected direct current brush motor.The utility model can realize multi-motor precision control, and have the advantages of low complexity, high integration.