CEB Press/Research Development/Controller Design

Operating Cycle

The values on this cycle chart are for illustration and do not represent actual performance

(Plot generated from this Octave plotting script.)

The left of the cycle chart starts with a completed block having just been raised from the chamber, and the drawer already filled with fresh dirt. Subsequently, in sequence,

1. The secondary cylinder extends to eject the block
2. The main cylinder retracts downward, receiving dirt from the drawer
3. The shaker motor operates
4. The secondary cylinder retracts to mid-position, closing the chamber
5. The main cylinder rises to compress the block; simultaneously dirt is falling from the hopper, refilling the drawer
6. The main cylinder retracts slightly
7. The secondary cylinder retracts fully, allowing clearance for the block to be ejected
8. The main cylinder raises the completed block

The progress of the cycle is controlled on the basis of

• position feedback from the main cylinder travel
• position feedback from the secondary cylinder/drawer travel
• preset time delays