37results about How to "Improve work quality" patented technology

The invention provides a single side soft absorption type automatic drilling robot which is applicable to operation such as hold drilling, reaming, dimpling and the like at wings and fuselage parts, and the machining for materials which are hard to machine such as titanium alloy (Ti) and composite materials (CPRF) is realized. The robot is fixed at an expected machining area by using a gas source provided by a vacuum generator and by using a vacuum chuck; and a soft track can adapt to different machining curves according to different curvature. The positioning of a drilled hole and the adjustment of the verticality of a drill bit are realized according to a drill plate. A pneumatic main shaft is adopted as the main shaft of the robot; and in combination of an ultrasonic vibration machining technology, the quality and efficiency of the machining are improved; the machining difficulty is reduced; the current detection at a feeding direction can be carried out in real time during the hole making process; and the protection and precise control for the machining process are realized.

The invention discloses a heat radiating fan and a power supply device. The heat radiating fan comprises a frame body, a fan circuit board, a fan motor, a plurality of motors and a thermosensitive element, wherein the frame body is provided with an air inlet side and an air outlet side and a substrate is formed at the center of the air outlet side. The fan circuit board is arranged on the substrate of the frame body; the fan motor is arranged on the substrate of the frame body and is electrically connected to the fan circuit board; the fan blades are arranged on the fan motor; and the thermosensitive element is arranged on the fan circuit board or frame body, so that the heat radiating fan disclosed by the invention has a function of sensing the temperature. The heat radiating fan is applied to the power supply device, so that an internal space of the power supply device can be saved; and reliable temperature information can be provided for the power supply device so as to improve the work quality of the power supply device.

The invention relates to a printing circuit board, which comprises an analog area and a digital area, wherein the analog area comprises an analog formation, an analog wiring layer and an analog bearing layer, wherein the analog wiring layer and the analog bearing layer are electrically stacked on the analog formation sequentially and an analog element which is adhered to the analog bearing layer and electrically connected with the analog wiring layer through analog grounding pins; the digital area comprises a digital formation, a digital wiring layer and a digital bearing layer, wherein the digital wiring layer and the digital bearing layer are electrically stacked on the digital formation sequentially and a digital element which is adhered to the digital bearing layer and electrically connected with the digital wiring layer through digital grounding pins; the analog formation is connected with the digital formation to form a main formation with a larger area; the analog wiring layer and the digital wiring layer are separated mutually; and the analog bearing layer and the digital bearing layer are separated mutually. The printing circuit board can make an electromagnetic interference signal absorbed quickly by the main formation with the larger area and prevent the electromagnetic interference signal generated by the digital element from transmitting to the analog element.

The invention discloses an adaptive compensation method for out-of-control failure of an actuator of a satellite attitude control system, comprising: (1) modeling the out-of-control failure according to the working status of the actuator of the satellite attitude control system, and generating the actuator of the satellite attitude control system Runaway failure model. (2) Based on the out-of-control failure model of the satellite attitude control system actuator established in the described step 1, the assembly matrix of the satellite attitude control system actuator is used to construct the inverse matrix of the new control gain matrix, and the satellite attitude control system is parameterized change. (3) Design an adaptive law to directly estimate the inverse matrix of the new control gain matrix constructed in the second step and the uncertainty of the satellite attitude control system. (4) Use the estimated value obtained in step 3 to construct an adaptive controller. The present invention can directly deal with the system uncertainty brought by the fault without multi-model switching. It not only solves the singularity problem of the estimation matrix, but also can effectively reduce the amount of calculation required for control, and can ensure good asymptotic tracking performance of the satellite attitude angular velocity.

The invention discloses a horizontal high-back-pressure centrifugal pumping set. The horizontal high-back-pressure centrifugal pumping set comprises an impeller, a pump body, a pump cover, a sealing seat, a motor, a base, a bracket, an elastic shaft end ejector and a nut. A flow path of the pump body has a double-layered volute structure; a valve-controlled discharging structure is arranged on the pump cover; and a mechanical seal and a packing seal are respectively arranged at two ends of the sealing seat. An outwards convex hub is arranged in the middle of the right end of the impeller and is in clearance fit with an inner hole of the left end of the pump cover; and because threads of which the screwing direction is opposite to that of the impeller are arranged on the outer wall of the hub, the reverse threads rotate in the inner hole of the pump cover so that a reverse-screw pressure releasing structure is formed. In order to counteract rightward thrust of back pressure on the impeller, the elastic shaft end ejector is arranged between a suction opening of the pump body and the impeller. By the pointed structure design, the horizontal high-back-pressure centrifugal pumping set can normally run for a long time after diving to an environment with pressure of 5.0MPa.