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To a quantum mechanic the whole universe is one godawful big interacting wavefunction ?
but to the rest of us, it’s a world full of separate and distinguishable objects that hurt us
when we kick them. At a few months of age, human children recognize objects, expect
them to be permanent and move continuously, and display surprise when they aren’t or
don’t. We associate visual, tactile, and in some cases audible and olfactory sensations with
identifiable physical things. We’re hardwired to understand our environment as being
composed of separable things with specific properties and locations. We understand the
world in terms of what was where when.
標(biāo)簽：
RFID
The
RF
in
上傳時間：
2020-06-08
上傳用戶：shancjb
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This book was written by Michael Margolis with Nick Weldin to help you explore the
amazing things you can do with Arduino.
Arduino is a family of microcontrollers (tiny computers) and a software creation envi-
ronment that makes it easy for you to create programs (called sketches) that can interact
with the physical world. Things you make with Arduino can sense and respond to
touch, sound, position, heat, and light. This type of technology, often referred to as
physical computing, is used in all kinds of things, from the iPhone to automobile elec-
tronics systems. Arduino makes it possible for anyone—even people with no program-
ming or electronics experience—to use this rich and complex technology.
標(biāo)簽：
Cookbook
Arduino
上傳時間：
2020-06-09
上傳用戶：shancjb
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The chief objective of Electric Machinery continues to be to build a strong
foundation in the basic principles of electromechanics and electric machinery.
Through all of its editions, the emphasis of Electric Machinery has been
on both physical insight and analytical techniques. Mastery of the material covered
will provide both the basis for understanding many real-world electric-machinery
applications as well as the foundation for proceeding on to more advanced courses in
electric machinery design and control.
標(biāo)簽：
Machinery
Electric
6th
ed
上傳時間：
2020-06-10
上傳用戶：shancjb
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This introductory chapter is devoted to reviewing the fundamental ideas of
control from a multivariable point of view. In some cases, the mathematics
and operations on systems (modelling, pole placement, etc.), as previously
treated in introductory courses and textbooks, convey to the readers an un-
realistic image of systems engineering. The simplifying assumptions, simple
examples and “perfect” model set-up usually used in these scenarios present
the control problem as a pure mathematical problem, sometimes losing the
physical meaning of the involved concepts and operations. We try to empha-
sise the engineering implication of some of these concepts and, before entering
into a detailed treatment of the different topics, a general qualitative overview
is provided in this chapter.
標(biāo)簽：
MultivariableControlSystems
上傳時間：
2020-06-10
上傳用戶：shancjb
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Control systems are used to regulate an enormous variety of machines, products, and
processes. They control quantities such as motion, temperature, heat flow, fluid flow,
fluid pressure, tension, voltage, and current. Most concepts in control theory are based
on having sensors to measure the quantity under control. In fact, control theory is
often taught assuming the availability of near-perfect feedback signals. Unfortunately,
such an assumption is often invalid. Physical sensors have shortcomings that can
degrade a control system.
標(biāo)簽：
Observers
Control
Systems
in
上傳時間：
2020-06-10
上傳用戶：shancjb
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Signals convey information. Systems transform signals. This book introduces the mathe-
matical models used to design and understand both. It is intended for students interested
in developing a deep understanding of how to digitally create and manipulate signals to
measure and control the physical world and to enhance human experience and communi-
cation.
標(biāo)簽：
Interpretation
Structure
and
Signals
Systems
of
上傳時間：
2020-06-10
上傳用戶：shancjb
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This texts contemporary approach focuses on the concepts of linear control systems, rather than computational mechanics. Straightforward coverage includes an integrated treatment of both classical and modern control system methods. The text emphasizes design with discussions of problem formulation, design criteria, physical constraints, several design methods, and implementation of compensators.Discussions of topics not found in other texts--such as pole placement, model matching and robust tracking--add to the texts cutting-edge presentation. Students will appreciate the applications and discussions of practical aspects, including the leading problem in developing block diagrams, noise, disturbances, and plant perturbations. State feedback and state estimators are designed using state variable equations and transfer functions, offering a comparison of the two approaches. The incorporation of MATLAB throughout the text helps students to avoid time-consuming computation and concentrate on control system design and analysis
標(biāo)簽：
控制系統(tǒng)
上傳時間：
2021-12-15
上傳用戶：
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實驗教學(xué)一直是工科教學(xué)中不可或缺的組成部分,對培養(yǎng)學(xué)生的動手能力,獨立思考能力,創(chuàng)新思維與發(fā)散思維具有重要的作用。針對目前電路教學(xué)實驗中電路仿真實驗與實物電路實驗各自獨立,無法統(tǒng)一問題,提出將仿真電路實驗與實物電路實驗有機(jī)的結(jié)合同步操作,并使用Web發(fā)布實現(xiàn)遠(yuǎn)程實驗操作。采用Multisim作為電路實驗仿真平臺,NI Eiviss II作為實物電路實驗硬件平臺,運用LabVIEW整合Multisim電路仿真實驗與實物電路實驗,實現(xiàn)仿真與實物實驗有機(jī)結(jié)合,兩種實驗可同步進(jìn)行。學(xué)生在仿真實驗中先可探索實驗,然后做實物實驗。同時運用LabVIEW開發(fā)出實驗過程人機(jī)交互操作接口界面,使用過程中效果良好。Experimental teaching has always been an indispensable part of engineering education.And it always plays an important role in cultivating students'practical ability,independent thinking ability,innovative thinking and divergent thinking.But simulation experiment and physical experiment cannot be unified in the circuit teaching experiment at present.In order to solve this problem,this paper proposes to combine organically the simulation circuit experiment with physical circuit experiment,and synchronously operate them.This paper uses the WEB publishing to achieve remote experimental operation.Multisim is used as the circuit simulation platform,and NI Eiviss II is used as the physical circuit hardware platform.Multisim circuit simulation experiment and physical circuit experiment are implemented by LabVIEW to realize the combination of simulation experiment and physical experiment.Students do explore experiments in simulation experiment firstly,and then do physical experiment.And this paper uses LabVIEW to develop the experimental man-machine interface.
標(biāo)簽：
multisim
labview
上傳時間：
2022-04-05
上傳用戶：
-
為了實時檢測血氧量,能使缺氧特別敏感的腦組織或心臟類疾病患者得到及時治療,采用近紅外雙波長透射式光電脈搏血氧測定法,以H橋電路對發(fā)射光源進(jìn)行控制及通用運算放大器搭建濾波電路。運用參數(shù)理論計算和計算機(jī)仿真結(jié)果相對比的方法,通過Mu ltisim軟件對所設(shè)計電路進(jìn)行仿真,仿真結(jié)果與理論參數(shù)計算相吻合,證明了電路參數(shù)設(shè)計的可行性,為血氧儀的實物制作提供參考。For real-time detection of oxygen saturation for timely treatment of the brain or heart,which are very sensitive to oxygen inadequacy,the near-infrared wavelengths double photoelectric pulse oximeter transmission method is adopted.The illuminant is controlled with the H bridge circuit and the filter circuit is built with general op-amps.Parameters by theoretical calculation is compared with the computer simulation results in Multisim and satisfactory results are obtained.It is shown that the design of the circuit parameters is feasible and can be a help in making the physical blood-oxygen monitor.
標(biāo)簽：
multisim
光電二極管
濾波器
上傳時間：
2022-05-12
上傳用戶：
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This manual documents the Microcontroller profile of version 7 of the ARM? Architecture, the ARMv7-M architecture profile. For short definitions of all the ARMv7 profiles see About the ARMv7 architecture, and architecture profiles on page A1-20.ARMv7 is documented as a set of architecture profiles. The profiles are defined as follows: ARMv7-A The application profile for systems supporting the ARM and Thumb instruction sets, and requiring virtual address support in the memory management model. ARMv7-R The realtime profile for systems supporting the ARM and Thumb instruction sets, and requiring physical address only support in the memory management model ARMv7-M The microcontroller profile for systems supporting only the Thumb instruction set, and where overall size and deterministic operation for an implementation are more important than absolute performance. While profiles were formally introduced with the ARMv7 development, the A-profile and R-profile have implicitly existed in earlier versions, associated with the Virtual Memory System Architecture (VMSA) and Protected Memory System Architecture (PMSA) respectively.
標(biāo)簽：
arm
上傳時間：
2022-06-02
上傳用戶：
