Motion Control in Offshore and Dredging

دسته بندی: حمل و نقل: کشتی ها
ویرایش:  
نویسندگان: Albers Peter.  
سری:  
 
ناشر:  
سال نشر:  
تعداد صفحات: 319 
زبان: English 
فرمت فایل : PDF (درصورت درخواست کاربر به PDF، EPUB یا AZW3 تبدیل می شود) 
حجم فایل: 30 مگابایت 

قیمت کتاب (تومان) : 50,000

Springer, 2010. 316 p. ISBN:9048188024 English High loads with high dynamics in severe conditions can only be driven by fluid power mechanisms. Motion Control is often used as a description in various engineering disciplines to refer to a technological solution that is able to control motion, e.g. the movement of at least one part relative to another. This volume describes how drives, sometimes very large, are designed and realised. The book gives a practical explanation of the way in which the different mechanisms described work. A distinction is made between rotating and linear drives. In the case of rotating drives, the choice for an electrical drive is becoming more and more prevalent. Linear drives remain important, because of the large forces and highly dynamic behaviour in the domain of hydraulic drive technology. Both these important technologies are extensively discussed in this book, together with design rules and the many installation requirements for applications in the offshore and dredging industry. Content Chapter Hydraulic energy converters List of symbols .
Hydraulic pump types, constant output
External gear pumps .
Internal gear pumps
Vane pumps .
Radial piston pumps .
Hydraulic pump types, variable output
Swash plate pumps .
Proportional flow control
Pressure control .
Load sense control
Summary of pump characteristics .
Formulas .
Volumetric efficiency / mechanical efficiency
Actuators: cylinders .
Different types of cylinders
Formulas for a double action cylinder
Permissible speed
Cylinder friction
Application of the cylinder
Buckle calculation for cylinders
Rod layers .
Cylinder cushioning .
Cavitation .
Actuators: hydraulic motors
Motor with fixed displacement or stroke volume
Motor with variable stroke volume .
Formulas for a hydraulic motor Chapter Hydraulic energy control, conductive part Pressure control valves
Pressure reducing valve .
Pressure sequence valve .
Brake (counter balance) valve .
Directional valves .
Flow valves .
Non-return (check) valves .
Throttle valves
Proportional and servo valves .
General .
Proportional controls .
Higher pressure drop across the valve ports .
Performance curve for the proportional valve .
The asymmetrical spool
Slowing down of a load .
2-Way and 3-way pressure compensation, loadsensing .
Chapter Conductive part, piping and fluids List of symbols .
Piping
Fluid properties Chapter Fluid conditioners and hydraulic accumulators . List of symbols .
Reservoir .
Filtration .
Different filtration methods: .
Design considerations .
Accumulator .
Definition
Applications .
Types .
Working conditions, Law of Boyle-Gay-Lussac Chapter AC induction machines Construction and principle of operation
Speed and torque control
Details of the AC-DC-AC Chapter Control technology . List of symbols .
Block diagram and laplace transformation st
order system, step response .
Elasticity of hydraulic fluids .
Stiffness of a cylinder .
Stiffness of a hydraulic motor .
Results of stiffness calculations
Mass spring system .
Reduced mass and moment of inertia .
Dynamic behaviour
Complex numbers, polar diagram
Stability of 2nd and higher order systems
Control errors .
The integrating controller (i-controller)
The dynamics of the ac-induction motor . Chapter Linear drives, open-loop . List of symbols .
Mass loaded cylinder with counterbalance valve
Mass loaded cylinder with load control valve
Mass loaded cylinder with flow control valve
Pressure/force control .
Suspended force . Chapter Linear drives, closed loop systems List of symbols .
Proportional control
Static and dynamic parameters
Detailed hydraulic schema
Servo control, application .
Functional requirements .
Calculation of the drive system .
Details of the drive system
Commissioning
Servo control, application
Functional requirements .
Calculation of the control system .
Back-up accumulator .
Design detail Chapter Heave compensation . List of symbols .
Passive heave compensation, quasi-static behaviour .
Passive heave compensation dynamics .
Offshore applications
Type of gas
Combustion of a fluid .
Static electricity
Sparks caused by mechanical friction
Using nitrogen .
Active heave compensation
Method of construction
Deployment/retrieval of the load
Design of the gas system
Pressure equaliser function .
Pressure drop in the pipe work . Chapter Rotating drives List of symbols .
Primary and secondary hydraulic drives .
Comparison of a hydraulic and an electrical drive .
Hydraulic drive .
Electrical drive
Realisation of the drive
The high torque motor solution .
The high speed motor solution
The electric motor solution .
Design choice .
Hydraulic drive in open loop .
Dynamics of rotational drives .
Secondary drive for sawing mechanism . Chapter Subsea drives List of symbols .
Subsea hydraulic drives .
Subsea hammering
Salvage of the Kursk submarine .
A hydraulic drive for a subsea Grab
Subsea clamp systems
Subsea valve control
Subsea electrical drives . Chapter Safety design rules Legal requirements
Machinery Directive
Pressure Equipment Directive
Division into categories .
Requirements for the product .
Atmospheres explosive directive
Division into groups and categories
Division into zones and division into gas groups .
Methods of protection .
Classifications bureaus
Risk analysis .
Hazard Identification Study
Failure modes analysis
Examples of real life failures .
Free fall of a winch motor (1)
Free fall of a winch motor (2) Index