53results about How to "Reduced drive requirements" patented technology

The invention discloses a low-power consumption oscillating circuit. The low-power consumption oscillating circuit comprises a start-up circuit, a controlled oscillation circuit, a reference current source circuit and a drive circuit, wherein the reference current source circuit comprises a constant current source and configurable current source group and a confluence circuit; the controlled oscillation circuit comprises multi-stage identical current-controlled inverter circuits arranged in a cascaded manner; the reference current source circuit generates a reference current which is irrelative to the power supply voltage, the temperature and the process; the size of output currents of the reference current source circuit is configured by external digital control signals; by adjusting the reference current output by the reference current source circuit, the control of oscillation frequency of the controlled oscillation circuit can be realized, while the adjusted reference current can be provided for the drive circuit to serve as the reference voltage; and the frequency generated by the controlled oscillating circuit is output by the drive circuit. The low-power consumption oscillating circuit can be flexibly used in wake-up circuits of various wireless transceiver radio frequency chips, and is particularly suitable for low-power consumption occasions where working voltage is wide in changing range, and the low-power circuit for battery power supply is required..

An internal high-pressure forming system for pipe fittings comprises a rack, a slider and molds. Three stages of clamping force-increasing mechanisms are arranged between the upper portion of the rack and the slider, and the first-stage force-increasing mechanism is formed by a clamping servo motor, a speed reducer and a roller screw; a connector and a group of bilaterally symmetrical upper connecting rods, small connecting rods and lower connecting rods form a secondary force-increasing mechanism and a ternary force-increasing mechanism; high-precision pressure sensors are mounted on the upper mold and form a pressure detection system with a control system; axial pipe billet feeding mechanisms disposed symmetrically are arranged between the slider and the lower portion of the rack. The clamping servo motor drives the three-stages of force-increasing mechanisms to perform clamping, clamping force is increased accurately in the forming process according to the size of increasing internal pipe forming pressure on inner cavities of the molds, the molds are kept closed constantly during forming while the molds are small in deformation under the force action, and accordingly service life of the molds is prolonged, and pipe fitting forming quality is improved; the internal high-pressure forming system is capable of controlling the clamping force in real time and has the advantages of convenience in control, simple structure and low cost.

The invention discloses a three-dimensional constant-force parallel flexible micro-positioning platform. The three-dimensional constant-force parallel flexible micro-positioning platform comprises a main frame, a force input mechanism, a force output mechanism, and a constant force mechanism, wherein the force input mechanism, the force output mechanism and the constant force mechanism are arranged in the main frame. The constant force mechanism comprises a parallel plate spring mechanism, an X-direction constant force mechanism, a Y-direction constant force mechanism and a Z-direction constant force mechanism, wherein the X-direction constant force mechanism, the Y-direction constant force mechanism and the Z-direction constant force mechanism are connected with the parallel plate springmechanism and are mutually orthogonal, the X-direction constant force mechanism comprises a first negative stiffness mechanism and a first plate spring flexible structure which are in series connection, the Y-direction constant force mechanism comprises a second negative stiffness mechanism and a second plate spring flexible structure which are in series connection, and the Z-direction constant force mechanism comprises a third negative stiffness mechanism and a third plate spring flexible structure which are in series connection. The parallel structure is adopted for achieving motion decoupling, the positioning platform is provided with three independent freedom degrees in three-dimensional XYZ directions, meanwhile, a flexible hinge is used for connection, traditional connection defectsare overcome, and high-precision positioning is achieved.

A method of integrating a top surface optical device having electrical contacts on the top surface with an electronic chip (324) having electrical contacts on a connection surface comprising forming a trench (308) bounded by walls, the trench Extending from the top surface of the wafer containing the top optics into the wafer substrate (304), making a portion of the wall conductive by applying a conductive material to the portion; and thinning the substrate to expose the conductive material.

The invention provides a torque assisting device and method and a mammary radiography machine. The torque assisting device comprises a rotary mechanism, a fixing drum and a force applying mechanism capable of axially telescoping. The rotary mechanism is provided with loads. A motion trail with an inclination angle is arranged on one end face of the fixing drum. The fixing drum is connected with the force applying mechanism. One end of the rotary mechanism abuts against the motion trail and rotates around a rotary shaft along the motion trail. The inclination of the motion trail is set according to torque generated by the gravity of the loads. According to the torque assisting device and method and the mammary radiography machine, by arranging the motion trail with a preset angle and the fixing drum, torque related to the load gravity rotary angle is output passively, torque generated by load gravity during rotation of the rotary mechanism around the shaft, is offset, and the load rotary balance is maintained.

The invention discloses a horizontal opening and closing roof structure. The horizontal opening and closing roof structure comprises a foldable roof bracket. The foldable roof bracket comprises more than two horizontal space shear type mechanisms, more than two longitudinal chain-shape shear type mechanisms and two full-length connecting rods, wherein the two full-length connecting rods are located on a roof frame and slide horizontally. Each horizontal space shear type mechanism is composed of upper chord arches, supports and an inhaul cable. Each support is composed of a plurality of secondshear mode hinge units, telescopic bars and flexible cables. The upper ends of the supports are arranged on cross hinged joints of an upper chord arch first shear type hinge units. The longitudinal chain-shape shear type mechanisms are connected to the upper chord arch and used for adjusting the distance between the two adjacent upper chord arches. Compared with the prior art, the horizontal opening and closing roof structure is simple in unfolding and folding type, convenient to drive and good in stress performance, the horizontal opening and closing roof structure has the advantages of convenient design and construction and the like, so as to well meet the requirements of different functions of a roof opening and closing of different buildings, the horizontal opening and closing roof structure can expanse and contract freely, has large ratio of expansion and contraction, and is specifically suitable for medium and small span buildings.

The invention provides a hinge detection device of an oil filling hole cover. An inner plate of the oil filling hole cover is used as the detection reference of a hinge of the oil filling hole cover;an inner plate locating support mechanism and a hinge detection mechanism are fixedly arranged on a bottom plate at the same time; the two perform working displacement through a sliding mechanism; working and non-working states are realized through a sliding mechanism locating mechanism; and, after the inner plate of the oil filling hole cover is located and fixed by the inner plate locating support mechanism, the hinge hole and the hinge surface of the hinge are detected by a detection pin on the hinge detection mechanism. According to the hinge detection device of the oil filling hole coverin the invention, integrated locating measurement is adopted; therefore, various parts are mutually matched and used as mutual references; the installation use performance of the whole oil filling hole cover is ensured; the parts are matched well; automobile driving requirements are satisfied; the inner plate of the oil filling hole cover itself is used as the locating detection reference for hinge detection; and the hinge detection performance of the oil filling hole cover is improved.

The invention discloses a smelting-casting aluminum bar smelting device for aluminum profile production and a smelting method thereof, and particularly relates to the technical field of aluminum profile production. Materials are crushed through a crushing structure, so that the size of the materials is reduced, and the subsequent smelting difficulty is lowered. Meanwhile, the feeding area of chemicals can be adjusted through the swinging of a feeding structure, so that the feeding uniformity is improved. Meanwhile, the crushing structure, the feeding structure and a heater can work at alternately changed positions smoothly under the action of an adjusting mechanism, so that the treatment operation of different processes is met. Meanwhile, the driving effect can be achieved through the same motor under the linkage action of multiple transmission structures, so that he driving requirements of multiple processes can be met, and the use cost is reduced. The purpose of stirring the materials in the smelting process can be achieved through the rotation of a stirring device, flowing gaps among the materials are increased, and thus the purpose of uniform mixing can be achieved. The device is convenient to operate and has greater application value.