Dual-Loop Control Strategies for Pneumatic Cylinder Synchronization
Dual-loop control strategies use two nested feedback loops to synchronize multiple pneumatic cylinders: an inner velocity loop that controls individual cylinder speed through proportional valve modulation, and an outer position loop that compares cylinder positions and adjusts velocity setpoints to minimize synchronization error. This architecture typically achieves ±0.5mm to ±2mm synchronization accuracy across stroke lengths up to 3 meters, compared to ±10-50mm with basic pneumatic systems.