50results about How to "Quick maneuver" patented technology

The invention belongs to the technical field of designing and manufacturing of agricultural mechanical equipment, and particularly relates to a novel multifunctional weeding machine. The novel multifunctional weeding machine comprises a machine wheel and a main rack, wherein the main rack is composed of two transverse rods, the machine wheel is arranged at the front end of the main rack, a pedal is fixedly connected to the rear end of the main rack, part of the pedal protrudes out of the main rack, and a main bent rod is arranged below the protruding part and connected with blades; an auxiliary rack is a frame formed by two longitudinal rods, the lower end of the auxiliary rack is arranged outside the transverse rods of the main rack in a wrapping and clamping mode, and two symmetrical auxiliary bent rods are arranged at the upper end of the auxiliary rack and connected with blades; the lower end and the upper end of an inclined rod are connected with the main rack and the auxiliary rack; a push rod is connected between the two transverse rods and wrapped and clamped by the upper end of the inclined rod, and the lower end of the inclined rod is connected with the transverse rods. By means of the novel multifunctional weeding machine, in use, an operator can turn the weeding machine by 180 degrees with the machine wheel as the axis at any time, in other words, tool bits on the main rack or tool bits on the auxiliary rack can be used for weeding, and fast moving is achieved; when plowing is needed, the tool bits can be changed, and the weeding machine is fast and convenient to use.

A novel mast mechanical equipment vertical assembling foundation is a regular polygon prism, cylinder or polygon prism concrete independent foundation structure which is obtained by vertically assembling the concrete prefabricated part. The invention is widely suitable for the mast mechanical equipment which periodically moves or is fixedly used in fields of building, electric power, information, geological industry and military industry. The invention is mainly characterized in that the horizontal side pressure and the friction of the foundation soil are fully utilized for increasing the dumping resistance of the foundation. The invention has the advantages of small accommodation area, high installing and detaching velocity, no water operation on the construction side, providing new condition for the foundation installing at the high-cold and dry areas, predominant resource-saving and energy-saving and environment-protecting benefits, and evident economic benefit.

The invention discloses a saturated sliding mode variable structure control method for rapidly maneuvering attitudes of satellites. The saturated sliding mode variable structure control method includes steps of 1, acquiring current attitudes of the satellites and acquiring attitude errors of the current attitudes of the satellites relative to target attitudes; 2, determining bandwidths, damping coefficients, the maximum torque of actuating mechanisms, torque regulation coefficients and fundamental frequencies of flexible accessories, and computing control parameters for rapidly maneuvering the attitudes of the satellites; 3, computing saturated sliding mode surfaces of the satellites in rolling directions and computing linear sliding mode surfaces of the satellites in pitching and yawing directions; 4, acquiring control torque by means of computation; 5, acquiring corresponding control instructions for the actuating mechanisms by the aid of the control torque acquired in the step 4, transmitting the instructions to the corresponding actuating mechanisms and controlling the actuating mechanisms to rapidly maneuver the attitudes of the satellites. The saturated sliding mode variable structure control method has the advantages that the method is simple and reliable and is low in computational complexity, the satellites can be rapidly maneuvered and stabilized by the aid of the saturated sliding mode variable structure control method, accordingly, the attitude maneuvering time can be shortened, and the saturated sliding mode variable structure control method is obviously superior to other methods.