2results about How to "Improve reliable operation" patented technology

This invention discloses a machining process for precision screws, belonging to the field of mechanical manufacturing technology. It includes the following steps: S1, rough machining and forming: treating the surface of the bar stock and machining functional slot structures, followed by pre-deburring; S2, structural strengthening: heat-treating the workpiece for strengthening; S3, precision finishing: correcting the form and position tolerances of the heat-treated workpiece and precision grinding each surface; S4, quality assurance delivery: completing inspection, cleaning, and packaging. This process flow is clear, employing a logical arrangement of "forming first, then strengthening, and then fine-tuning," resulting in a workpiece with not only a high-hardness surface but also improved coaxiality of its stepped axis and thread trajectory accuracy. This significantly enhances the screw's operational stability at high speeds. Furthermore, through staged quality control and precision correction, it improves the first-pass yield of the workpiece and reduces the risk of scrap due to heat treatment deformation, possessing extremely high industrial application value.

This invention provides a fault-tolerant control system and method for a magnetic levitation motor based on virtual sensing technology, relating to the field of magnetic levitation motor technology. The system includes a magnetic levitation motor body, a turbine expander, a measurement and monitoring unit, a power amplification and power supply unit, and a digital controller. The digital controller receives multi-source signals synchronously acquired by the measurement and monitoring unit to obtain the physical measured displacement of the rotor. It performs a mechanism-data dual-drive composite aerodynamic disturbance estimation for the magnetic levitation motor to obtain the aerodynamic compensation force and calculate the virtual displacement of the magnetic levitation rotor. It performs orthogonal reconstruction of the physical measured displacement and the virtual displacement to obtain the reconstructed displacement feedback signal for the digital controller to control the rotor. The digital controller calculates the basic feedback control quantity based on the closed-loop error according to the reference levitation control law. The digital controller reassembles the feedback source, aerodynamic compensation force, and control parameters of the basic feedback control quantity online to form the final control output.