CONTROL OF MULTIPLE ACTUATORS

1

• CONTROL OF MULTIPLE ACTUATORS
• using displacement step diagram describe motion
  of all actuator
• define abbreviated notation for the sequence of
  cylinders
• draw the circuit diagram design according to
  the guidelines
• avoid overlapping signal use roller lever
  valves, idle roller valves, time delay valves,
  reversing valves or sequencers

2

• SEQUENCE CONTROL
• Zero position, a0 position of rest
• 1 position, a1 opposite of rest position
• commands pressure signals to switch a
  directional control valve
• positive command, A moving cylinder from zero
  to 1 position
• negative command, A- return cylinder from 1
  position to zero

3

• COORDINATED MOTION
• Abbreviated Notation
• a1 b1 a0
  b0
• 1A 2A 1A- 2A-

where b0 2S1 b1 2S2 a1 1S3 a0 1S2

4
COORDINATED MOTION
5

• SIGNAL OVERLAP
• Abbreviated Notation
• a1 b1 b0
  a0
• 1A 2A 2A- 1A-

where b0 2S1 b1 2S2 a1 1S3 a0 1S2

6
SIGNAL OVERLAP