Signal transformation approach to fast nanopositioning
نویسندگان
چکیده
منابع مشابه
Signal transformation approach to fast nanopositioning.
High bandwidth, high resolution positioning is a significant enabling tool for nanotechnology. Unfortunately, in a typical nanopositioner operating in closed loop, higher bandwidth results in increased sensitivity to measurement noise and hence reduced resolution. In this article we present a technique that allows high-precision tracking of repetitive, jitter-free reference signals without bein...
متن کاملHigh-Speed, Ultra-High-Precision Nanopositioning: A Signal Transformation Approach
Signal transformation is a novel strategy employed in feedback control to reduce the impact of measurement noise on positioning accuracy. This chapter addresses robustness issues of the method with respect to output disturbance and uncertainty in plant low frequency gain. The robustness problems can be solved by an inner loop with integral action before incorporating the signal transformation m...
متن کاملnon-corrective approach to pronunciation
the aim of this study has been to find answers for the following questions: 1. what is the effect of immediate correction on students pronunciation errors? 2. what would be the effect of teaching the more rgular patterns of english pronunciation? 3. is there any significant difference between the two methods of dealing with pronuciation errore, i. e., correction and the teaching of the regular ...
15 صفحه اولNested Switching Control Design for Fast PZT Actuated Nanopositioning
This paper studies a new nested switching control (NSC) scheme for piezoelectric (PZT) actuators to achieve fast nanopositioning. Conventional PZT controllers typically neglect the actuator saturation nonlinearity for design simplicity but at the cost of reduced performance. By optimizing a quadratic performance cost function that explicitly involves the actuator saturation, the NSC can not onl...
متن کاملsignal specific successive approximation analog to digital converter
چکیده: در میان انواع متفاوتی از مبدل های آنالوگ به دیجیتال که تا کنون معرفی شده اند، مبدل های آنالوگ به دیجیتال تقاریب متوالی(sar ) به علت سادگی ساختار و همچنین توان مصرفی کم، همواره یکی از پرکاربرد ترین مبدل های آنالوگ به دیحیتال در کاربرد های بایومدیکال بوده اند. به همین دلیل تاکنون روش های متعددی برای کاهش هرچه بیشتر توان مصرفی در این مبدل ها ارائه شده است که در اکثر آنها توجهی به مشخصات سی...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2009
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.3160016