39results about How to "Help improve" patented technology

The invention discloses intelligent teaching demonstration equipment for art teaching. The intelligent teaching demonstration equipment comprises four supporting legs and a circular plate, wherein the tops of the four supporting legs are fixedly connected with a mounting cylinder; the mounting cylinder is internally provided with an adjusting mechanism enabling the circular plate to ascend or descend; the adjusting mechanism comprises a screw rod, and the screw rod is rotatably connected to the inner bottom of the mounting cylinder; the outer wall of the screw rod is in threaded connection with a screw rod sleeve; the outer wall of the screw rod sleeve is fixedly connected with two mounting frames; the tops of the two mounting frames are fixedly connected with the bottom of the circular plate; the outer wall, located below the two mounting frames, of the screw rod sleeve is fixedly connected with a limiting block; a plurality of limiting grooves are formed in the inner wall of the mounting cylinder in a circumferential array mode; and the limiting block is connected with the inner walls of the limiting grooves in an up-down sliding mode. Through the cooperation of the above structures, a diversified and rich light environment can be constructed for teachers and students, demonstration and explanation of the teachers and observation of the students are facilitated, and the students can conveniently cultivate the sense of space and the sense of light.

The invention relates to the technical field of air bearings, and discloses an ultrasonic-based air foil bearing air film thickness measurement system and method, including an eddy current displacement sensor, an ultrasonic transmitting and receiving device, a hydrogel layer and signal processing equipment, and the air foil Real-time non-destructive monitoring of the air film thickness of the disc bearing. The eddy current displacement sensor measures the displacement of the rotor in two vertical directions, and calculates the axis trajectory of the rotor; the ultrasonic transmitting and receiving device transmits and receives the ultrasonic signal reflected by the hydrogel layer, and transmits to the The signal processing equipment transmits data; the signal processing equipment analyzes and stores the signal data to obtain the elastic deformation of the air foil bearing support layer measurement point; according to the rotor axis track and the elastic deformation of the support layer measurement point, the measurement point is obtained. Air film thickness. The invention realizes the non-intervention measurement of the air film thickness of the air foil bearing by introducing ultrasonic measurement and combining the hydrogel and the air foil bearing.

The invention discloses an establishment method and a solving method of an optimization design model on the basis of a principle of uniform accuracy life. The establishment method is carried out according to the following steps: 1. adopting a dynamic error decomposition and traceability method to obtain a dynamic measurement system and a respective accuracy loss function of n error units; 2. according to n+1 accuracy loss extremities and n+1 accuracy loss functions set for the dynamic measurement system and the n error units of the dynamic measurement system, obtaining the respective accuracy life of the dynamic measurement system and the error units of the dynamic measurement system; 3. utilizing an unhomogeneity definition in the establishment method to obtain the unhomogeneity of the dynamic measurement system; 4. utilizing a total-system dynamic error model to obtain the average accuracy loss speed weight of the n error units; and 5. establishing a life uniform optimization design model of the dynamic measurement system. The optimization design of the uniform accuracy life of the measurement system can be realized, so that each unit in the system can be subjected to accuracy failure in the roughly same time so as to perform the maximum efficiency of resources.