This 4½ day course is designed to introduce participants to the fundamentals of motion control and the role of Electrohydraulics in achieving this control.

Major topics include motion profile development, valve control of cylinder motion (VCCM) calculations, feedback systems, frequency response analysis, optimal system designs, and effects of valve characteristics on cylinder positions error. A 25% of the course is spent in the lab where operational amplifiers and two-stage proportional valves are addressed.

Suggested pre-requisite for this course is Industrial Hydraulic Technology.

MAJOR TOPICS COVERED

• Motion profiles
• Feedback systems
• PID loops
• Pneumatic proportional pressure systems and applications
• Hydraulic proportional pressure systems and applications
• Hydraulic proportional position systems and applications
• Electronic driver boards and their adjustments
• Hands-on workshop using a proportional DCV and appropriate control board

WHO SHOULD ATTEND?

This course is beneficial to application engineers, systems designers, and maintenance personnel charged with the design and/or maintenance of motion control systems as well as engineers who are going through the process of assessing the implementation of motion control for their production systems.

FEES & SCHEDULES

Classes are limited to 9 people per class. Tuition fee is Cdn $1,200.00 plus GST per attendee per course.

Normal Class Time: Monday to Thursday 8:30 a.m. — 4:30 p.m.; Friday 8:30 a.m. — 12:00 noon. (4 1/2 days)

For c urrent year schedule, please click here.

Please call our Training Assistant at 905-568-1700 ext. 2275 or send us an e-mail should you have further query.

COURSE OUTLINE

Day One

1. Introduction
2. Outline of the scope of the course
3. The evolution of Electro-Hydraulic motion and control from it's more traditional roots
4. Introduction of Motion Profiles
5. A discussion of Valve control vs Pump control
6. Overshoot, lag and other factors effecting profile response
7. Design criteria and Acceleration, Velocity and Position Profiles
8. Open and closed loop systems
9. Constant pressure systems and the effects of Flow Restriction
10. Electro-Hydraulic sizing problems

Day Two

1. Discussion and problems concerning Slew Speed and it's effect on motion profiles and cycle times
2. Application problems involving acceleration force and pressure.
3. "Electricity 101" -A discussion and workshop involving electrical and electronic principals
4. Proportional and Servo valve design and construction
   • Bernoulli forces
   • Valve metering
   • Torque motors and servo construction
   • Force Motors
   • Proportional Solenoids
5. Direct acting and pilot operated proportional valves

Day Three

1. A discussion of crossover conditions, deadband eliminators, Pulse width modulation, hysterisis, Velocity limiters, and dither
2. Servo and proportional valve comparisons including deadzone, linearity, pressure gain and flow and spool position curves
3. Velocity control of cylinder movement (VCCM)
4. Zero lapped spools and the use of LVTD's for spool position feedback
5. Hands on workshop

Day Four

1. Analogue Position Sensors including impedence matching and the zeroing of scaling and phasing signals
   • Incremental encoders and quadriture counting
   • Absolute encoders
   • Linear potentiometers
   • Magnetorestrictive position sensors
   • LVTD's
   • Joy sticks
2. PLC's and the use of analogue signals
3. PID Loops
4. Hands on workshop

Day Five (class adjourns at noon)

1. Proportional Throttle Valves
2. Proportional Pressure Relief Valves
3. Pressure Compensating Modules
4. Pneumatic Servo Directional Control Valves
5. Rules of thumb and installation tips