Fundamentals of Engineering High-Performance Actuator Systems. Kenneth W. Hummel

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1 Fundamentals of Engineering High-Performance Actuator Systems Kenneth W. Hummel Author Name

2 Chapter 1: Introduction Fundamentals Performance Loads Constraints Design Margin Environment Component Strength Component Stiffness Reliability Maintainability Cost Summary References... 8 Chapter 2: Project Management Scope Requirements Schedule Cost Design Cost Prototype Cost Production Cost Operating Cost Decommissioning Cost Cost Estimating Techniques Risk Schedule Cost Technology Customer Acceptance Risk Management Project Close Out References v

3 vi Chapter 3: Requirements Analysis Performance Work Impulse Momentum Energy Power Equations of Motion Summary Velocity Acceleration Position Loads Component Stiffness Linear Stiffness Rotary Stiffness Materials Component Strength Yield Strength and Elastic Analysis Ultimate Strength and Plastic Analysis Fatigue Strength Constraints Mounting Configuration Pinned Joints Simply Supported Joints Fixed Support Joints Joint Combinations Environment Operation Storage Shipping and Transportation Pollution Safety Personnel Safety Machine Safety Environmental Safety Safety Summary Reliability Maintenance Preventative Maintenance Repair Verification and Validation Summary References... 73

4 Chapter 4: Design to Requirements Performance Allocations References Chapter 5: Power Sources Hydraulic Hydraulic Symbols Power Source Hydraulic Power Unit HPU Component Selection Fluids Tank or Reservoir Pumps Prime Mover Filters Accumulators Heat Exchangers General Hydraulic Power Unit Valves High-Performance Actuator Control Valves References Pneumatic Systems References Electric References Actuator Detailed Design Motor Selection Motor Shaft Loads Motor Torque Requirements Motor Speed Requirements Electric Motor Selection AC induction (synchronous) motors DC stepper motors DC brushless motors DC brushed permanent magnet motors Hydraulic Motor Selection Gear motors Vane motors Gerotor/Geroler motors Axial and bent axis piston motors Radial piston motors Pneumatic Motors References vii

5 5.5 Control Element Design and Selection Linear Actuator Design Cylinders Hydraulic Cylinders Pneumatic Cylinders Motor and Rack Screws Spring Rate for Power Screw Actuators Mounting Structure and Load Structure Stiffness Screw Stiffness Nut Stiffness Total Screw/Nut Stiffness Bearings Screw Critical Speed Electric Solenoids Electric Linear Motors References Rotary Actuator Design Direct Drive Motors Gear Boxes Mechanical Mechanisms Racks References Feedback Systems Sensor Type Rotary Sensors Linear Sensors Inertial Sensors Sensor Location Actuator Components to Stop/Hold a Load References Verification and Validation Chapter 6: Prototyping Fabrication Assembly Prototype Verification and Validation Chapter 7: Verification and Validation Engineering Judgment Comparison Analysis Testing viii

6 Chapter 8: Production Bibliography Appendix A: Hydraulic Symbols Training Supplement Problems by Chapter Chapter 1 Problems Chapter 2 Problems Chapter 3 Problems Chapter 4 Problems Chapter 5 Problems Problems Problems Problems Problems Problems Problems Chapter 7 Problems About the Author Index ix

Nomenclature... xi Hydraulic Laws, Theorems, and Equations...xii

Nomenclature... xi Hydraulic Laws, Theorems, and Equations...xii Nomenclature... xi Hydraulic Laws, Theorems, and Equations...xii 1 Introduction 1.1 Component Design Perspective...1 1.2 Hydraulic Power Evolution...2 1.3 Hydraulic Applications...6 1.4 Component Design

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