7results about How to "Simplify the control problem" patented technology

The invention provides a low-sulfur manganese-silicon alloy and a production method thereof.The method comprises the steps that silica, coke and manganese ore are crushed and then mixed with lime, and smelting raw materials are obtained; a closed electric furnace is filled with smelting raw materials for smelting, and alloy melt is obtained; the alloy melt is transferred into a ladle, a desulfurizing agent is added for the desulfurization process, and manganese-silicon alloy molten iron is obtained; and the manganese-silicon alloy molten iron is poured into a mold for ingot casting, and a manganese-silicon alloy finished product is obtained after cooling. According to the method, the method capable of effectively reducing the sulfur content in the manganese-silicon alloy is provided through the steps of raw material crushing and mixing, in-furnace power transmission refining, out-of-furnace desulfurization, casting molding and the like, the low-sulfur manganese-silicon alloy is produced, and therefore control over the sulfur element content in a steelmaking product is facilitated.

The utility model discloses a parallel tail end multi-degree-of-freedom mechanical arm which comprises two groups of branch chains which are symmetrically arranged and fixed at two ends of a platform, each group of branch chains comprises a base, a first motor and a second motor are respectively arranged on two sides of the base, the first motor is connected with a first short connecting rod through a rocker arm, and the second motor is connected with a middle supporting piece. One end of the supporting piece is hung below the base through a support, the other end of the supporting piece is movably connected with the middle of the first long connecting rod, one end of the first long connecting rod is connected with the first short connecting rod, and the other end of the first long connecting rod is movably connected with the tail end platform. The other end of the second long connecting rod is movably connected with the tail end platform. According to the mechanical arm, the multi-degree-of-freedom parallel mechanical arm of the end effector can be achieved, and the problems that an existing parallel mechanical arm is complex in structure and high in control coupling degree, the degree of freedom of the end effector is limited, and installation and maintenance are difficult are solved.

This application relates to the field of robotics, and more particularly to a limb assembly and a robot to address the problem of poor waist flexibility in robots. In this limb assembly, a waist spin drive assembly, a waist lateral swing drive assembly, a waist pitch drive assembly, and a folding assembly are connected in series, respectively realizing waist spin, waist lateral swing, waist pitch, and the raising and lowering of the torso assembly, thus improving the robot's waist flexibility. Furthermore, each action can be achieved independently by its corresponding drive assembly, simplifying the structure and control of the limb assembly. In addition, when the lateral swing and pitch angles of the waist spin drive assembly are both 0 degrees, the waist pitch drive assembly and the waist lateral swing drive assembly are both located on the downward-facing side of the waist spin drive assembly, which helps to lower the center of gravity of the limb assembly. The waist lateral swing drive assembly is located on the rearward-facing side of the waist pitch drive assembly, which helps to improve the anthropomorphic and aesthetic appearance of the robot.

A bus-type flow amplification valve includes a hydraulic pump connected to an actuator via a main valve. The main valve is connected to a steering gear, which is connected to a steering wheel. The main valve includes a main valve core connected to the hydraulic pump via a priority valve and to the actuator via a buffer suction valve. Two control terminals of the main valve core are connected to a bus-type pilot module and also to the steering gear. This bus-type flow amplification valve, combined with the steering gear, enables hydraulic steering via steering wheel operation. Simultaneously, the bus-type pilot module, integrating a displacement sensor and an electro-proportional pressure reducing valve, allows for unmanned, remote-controlled steering, improving control accuracy, simplifying system wiring and control. Hydraulic steering via steering wheel has higher priority than electro-hydraulic steering, ensuring greater safety and reliability. The inclusion of a check valve and a back pressure valve achieves emergency steering and reduces impact.

This invention relates to a multi-segment variable stiffness magnetically driven continuum conduit robot and its control method. The multi-segment variable stiffness magnetically driven continuum conduit robot includes a conduit body with at least one axially extending working channel inside; a multi-joint magnetic drive unit includes multiple magnetic units spaced apart along the axial direction of the conduit body; a reversible variable stiffness module is disposed within at least one functional segment of the conduit body; the reversible variable stiffness module includes a phase change material encapsulated within a flexible covering structure and a heating component for heating the phase change material; a stiffness control system controls the phase state of the phase change material in each reversible variable stiffness module. This invention, by combining a multi-joint magnetic drive structure with segmented integrated reversible variable stiffness modules, achieves precise controllability of the deformable segments of the continuum robot, on-demand provision of local stiffness, and flexible switching between multiple working modes, thereby improving its operational accuracy, stability, and adaptability in complex cavity environments.

The application discloses a cartridge switching valve for peritoneal dialysis, a flow channel switching method and a cartridge. The switching valve comprises a rotating valve body. Flow channels in the cartridge are uniformly arranged along the circumferential direction of the rotating valve body. A plurality of valve body flow channels are formed in the rotating valve body and are matched with the flow channels arranged in the cartridge. The number of the valve body flow channels is matched with the number of the connection mechanisms of the flow channels in the cartridge. The connection mechanisms are determined by the interval angle of two flow channels connected with each other in the cartridge. The connection of the two flow channels in the corresponding cartridges is realized by rotating the valve body flow channels to the corresponding positions. The application can realize the quick switching of the flow channels. During the switching process, only the rotation angle of the rotating valve body needs to be controlled, without the complicated control logic. The structure and the control process of the cartridge can be effectively simplified, and the failure rate is reduced.

This invention discloses a quantitative sampling device, including a quantitative sampling mechanism and a rotation-telescopic motion mechanism for driving the quantitative sampling mechanism to perform sampling. The quantitative sampling mechanism includes a sampling vial holder, on which a sampling vial cap is fixedly mounted. A circular groove is provided on one side of the sampling vial cap, and a small sampling hole communicating with the circular groove is provided on the upper part of the sampling vial cap. A small inlet hole communicating with the circular groove is provided on the lower part of the sampling vial cap. A plunger is provided within the circular groove, and the plunger can rotate relative to the circular groove and move along the axis of the circular groove. The rotation-telescopic motion mechanism includes a base plate, on which a bushing seat is mounted, and a power shaft is mounted within the bushing seat. The base plate also includes a drive assembly and a switching assembly. The drive assembly is used to drive the power shaft to rotate relative to the bushing seat or move axially relative to the bushing seat, and the switching assembly is used to switch between rotational and telescopic motion of the power shaft. This invention also discloses a drug sensitivity analyzer.