Masterarbeit, 2010
70 Seiten
CHAPTER 1: INTRODUCTION
1.1 Motion Control Classification
1.2 Kinds of Controlled Motion
PART 1 LITERATURE REVIEW
CHAPTER 2: POSITION/PROXIMITY SENSORS FOR MOTION CONTROL
2.1 Limit Switches
2.2 Proximity Sensors
2.2.1 Inductive proximity sensors
2.2.2 Capacitive proximity Sensors
2.2.3 Ultrasonic proximity sensors
2.2.4 Photoelectric proximity sensors
CHAPTER 3: FLUID POWER (PNEUMATIC/HYDRAULIC) ACTUATORS
3.1. Valves
3.1.1 Pressure control valves
3.1.2 Reducing/regulating valves
3.1.3 Sequence valves
3.1.4 Flow control valves
3.1.5 Direction control valves
3.1.6 Check valve
3.2 Cylinders
CHAPTER 4 ELECTRICAL ACTUATORS
4.1 Mechanical switches
4.2 Solid state switches
4.3 Solenoids
4.4 Relays
4.5 Electric motors
PART 2 DEVELOPMENTS, ADVANCES AND APPLICATIONS OF MOTION CONTROL TECHNOLOGY
CHAPTER 5: ADAPTING FIELDBUS TECHNOLOGY IN MOTION CONTROL SYSTEMS
5.1 Actuator Sensor Interface (AS-i)
5.2 PROFIBUS
5.3 Industrial Ethernet
CHAPTER 6: APPLICATIONS & DEVELOPMENTS IN MOTION CONTROL & AUTOMATION TECHNOLOGY
6.1 Applications and trends of motion control in robotics
6.2 Application of fluid power in motion control technology
6.3 Application of motion control technology in plant automation
CHAPTER 6: CONCLUSIONS & RECOMMENDATIONS
This thesis examines the core components and advancements in motion control systems, focusing on the integration of sensors, actuators, and fieldbus communication technologies to improve industrial efficiency and automation precision.
2.2 PROXIMITY SENSORS
Proximity sensors detect the presence of nearby objects without any physical contact. Proximity sensors often emits an electromagnetic or electrostatic field, or a beam of electromagnetic radiation (infrared, for instance), and looks for changes in the field or return signal. The object sensed is referred to as the proximity sensor target. Different proximity sensor targets demand different sensors. For example, a capacitive or photoelectric sensor might be suitable for a plastic target; an inductive proximity sensor requires a metal target. Proximity sensors can have a high reliability and long functional life because of the absence of mechanical parts and lack of physical contact between sensor and the sensed object.
The following sections describe in details the various types of proximity sensors commonly in use, their principle of operation and applications.
2.2.1 Inductive proximity sensors
Inductive proximity sensors only detect the presence of metallic objects with the use of its electromagnetic field. They operate under the electrical principle of inductance. Inductance is the phenomenon where a fluctuating current, which by definition has a magnetic component, induces an electromotive force (emf) in a target object.
CHAPTER 1: INTRODUCTION: Provides a fundamental overview of motion control systems, classifying them into open-loop and closed-loop architectures and defining the primary kinds of controlled motion.
CHAPTER 2: POSITION/PROXIMITY SENSORS FOR MOTION CONTROL: Details the various sensor technologies used in automation, including limit switches and inductive, capacitive, ultrasonic, and photoelectric proximity sensors.
CHAPTER 3: FLUID POWER (PNEUMATIC/HYDRAULIC) ACTUATORS: Explores the mechanics of hydraulic and pneumatic actuators, focusing on valve classification, functionality, and cylinder operation.
CHAPTER 4 ELECTRICAL ACTUATORS: Covers electrical actuation methods, including mechanical switches, solid-state devices like thyristors and transistors, solenoids, relays, and the classification and operation of electric motors.
CHAPTER 5: ADAPTING FIELDBUS TECHNOLOGY IN MOTION CONTROL SYSTEMS: Analyzes the role of industrial communication networks, specifically AS-i, PROFIBUS, and Industrial Ethernet, in modern automation environments.
CHAPTER 6: APPLICATIONS & DEVELOPMENTS IN MOTION CONTROL & AUTOMATION TECHNOLOGY: Discusses the practical application of motion control technology in robotics, fluid power systems, and plant automation, highlighting current trends and system integration challenges.
Motion control, Automation, Sensors, Actuators, Fluid power, Robotics, Fieldbus, PROFIBUS, Servomotors, Stepper motors, Plant automation, Industrial electronics, PLC, Proximity sensors, Industrial communication.
The work provides a comprehensive analysis of motion control technologies, ranging from basic theory and sensor/actuator components to complex applications in industrial automation and plant systems.
The central themes include industrial sensing technologies, fluid power and electrical actuation, industrial fieldbus networking, and the application of these technologies in robotics and plant automation.
The primary goal is to provide a technical foundation for understanding motion control systems, highlighting how sensors and actuators work together to improve speed, precision, and efficiency in manufacturing.
The thesis utilizes a literature review and systematic technical analysis to explain the operation, design characteristics, and application features of hardware and communication protocols used in motion control.
The main part covers the classification of motion, operational principles of proximity sensors, the construction and control of fluid power and electrical actuators, and the integration of fieldbus technology.
Key terms include Motion control, Automation, Sensors, Actuators, Fluid power, Robotics, Fieldbus, and Servomotors.
Inductive sensors rely on electromagnetic fields to detect metallic objects through the principle of inductance, whereas capacitive sensors measure changes in capacitance to detect both metallic and non-metallic objects.
Electric motors offer simpler system design, lower maintenance costs, and cleaner operation without the risk of hydraulic fluid leaks, although hydraulic systems maintain an advantage in high-force applications.
The SIS acts independently of the Basic Process Control System (BPCS) to monitor for unsafe boundaries and automatically initiate protective actions or shutdowns to prevent hazardous incidents.
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