基于接触力控制的抛光轮磨损在线补偿策略研究  

Study on online wearing compensation strategy for polishing wheel based on contacting force control

作　　者：俞红祥[1,2] 徐洪[1] 袁巨龙[2] 

机构地区：[1]浙江师范大学交通学院,金华310004 [2]国家精密高效磨削工程技术中心湖南大学,长沙410082

出　　处：《仪器仪表学报》2010年第5期991-997,共7页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(50535040);浙江省重大科技专项(2008C01026-2)资助项目

摘　　要：提出了一种用于玻璃多面体磨削成形加工设备的抛光轮磨损在线补偿策略,由抛光接触力实时估算、抛光轮磨损预测算法和前馈-反馈混合方式接触力控制模块构成。该补偿策略无需采用精密测距传感器即可解决抛光轮长期运行磨损所导致的半径参数持续漂移。文中详细论述了抛光轮磨损在线补偿策略的原理和实现方式,并在实验室构建了玻璃多面体精密高效磨削加工原型机,对该补偿策略进行了应用测试。从加工样本采集的测试数据与理论分析呈现了良好的一致性,验证了所提出方法的正确性和有效性,及其在玻璃多面体磨削成形加工应用中的广泛应用前景。A novel online wearing compensation strategy for polishing wheel in a polyhedral glass grinding shaping machine is proposed, which consists of real-time polishing contacting force estimation, polishing wheel wearing prediction algorithms and hybrid feed-forward feed-backward contacting force control module. The compensation strategy has the advantage of eliminating the radius excursion of the polishing wheel during long term running, while the adoption of high accuracy displacement sensor is unnecessary. The principle and realization method of the new compensation strategy are discussed in detail. To verify the validity and practical feasibility, a polyhedral glass grinding prototype was built to test the presented compensation strategy in laboratory. Experiment result obtained from the manufactured samples shows good agreement with theoretical analysis data, which indicates that the proposed scheme emerges wide prospect in polyhedral glass grinding shaping applications.

关 键 词：磨削成形 抛光轮 磨损补偿 预测算法 

分 类 号：TG580.692[金属学及工艺—金属切削加工及机床]