Control Theory Of Active Balancing Technique Applied On Cantilever Rotor And Its Experiment Research

Modern rotating machinery developed on the trend of high speed,heavy load and intelligence. The high speed rotary device are the key equipment in the process industry, such as turbomachinery,pan,compressor and so on. Resonance vibration caused by unbalance influences the ordinary operation of equipments, so rotor's balancing is the critical factor for solving this problem. In order to complete the balancing process on line, the active balancing technique is studied in this paper. This skill avoids the broken down of the equipment on tradition balancing method, which decreases the company's loss. The main works could be summarized as follow:(1) The state of the art and tendency of the auto-balancing technology are reviewed and the significance is discussed.(2) The dynamics principle and basic theory of dynamic balance and auto-balance are studied.(3) Single-plane self-correction controlling algorithm based on the influencecoefficient method for electromagnetic active balancing device is also studied in this paper. Aiming atcorrect and false initial value of the influence coefficient, contrast simulations among balancing process rates of conventional influence coefficient method,fixed parameter and time-varying parameter influence coefficient method arecarried out on the Jeffcott rotor system. Simulation results indicate superiority of time-varying parameter influence coefficient method.(4)Used the simple model, which designs the control algorithm of continuously-dripping balancing head is also studied in this paper.