On the hysteresis characteristics and compensation control strategy of a pneumatic hydrodynamic retarder

W Wei, T Tao, H Jian, M Guo, N Hu, Q Yan - Physics of Fluids, 2024 - pubs.aip.org
As the core component of the hydrodynamic retarder braking system, pneumatic
proportional solenoid valve plays an important role in the process of braking torque control …

Self-Learning Backlash Inverse Control of Cooling or Heating Coil Valves Having Backlash Hysteresis

J Cai, JE Braun - 2016 - docs.lib.purdue.edu
Valves are widely used in HVAC systems to regulate liquid flow rate, such as hot-and chilled-
water valves utilized in cooling and heating coils. These valves are typically controlled with …