Proportional Flow Control vs. Proportional Pressure Control ValvesCompare proportional flow and pressure control valves using an SMC 85-to-40 L/min example, feedback architecture, load behavior, and acceptance tests.→Blog Author
Eric Zhou
Hello, I'm Eric, a Bepto Pneumatic control systems engineer. I help connect valve, FRL, CAD, and machine-control requirements with practical pneumatic component choices.
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Articles by Eric Zhou
164 articles sorted newest first for readers who want one author's pneumatic selection notes in one place.
How to Tune a PID Loop for a Proportional Valve and Cylinder SystemTune a pneumatic PID loop with 10–90% rise-time traces, anti-windup, derivative filtering, valve-neutral checks, and load-range validation for cylinder motion.→
Understanding Hysteresis and Linearity in Proportional Valve SpecificationsCompare proportional-valve hysteresis and linearity using SMC's 0.5% and ±1% FS example, test curves, reference methods, conditions, and clear RFQ checks.→
The Impact of Deadband on Proportional Valve Control AccuracyLearn how proportional-valve deadband differs from hysteresis, how a 0.4% model rating affects control, and how to measure and compensate it in practice.→
A Technical Guide to Spool Position Feedback in Proportional ValvesUnderstand spool position feedback in proportional valves, including LVDT and Hall sensing, inner-loop limits, data-sheet checks, commissioning, and fault diagnosis.→
The Function of Sandwich Plates: Pressure Regulators and Flow ControlsLearn how 5-port pneumatic sandwich plates regulate common or individual ports, meter exhaust flow, preserve manifold compatibility, and verify stack order.→
A Comparison of Piezoelectric vs. Solenoid Actuation in Proportional ValvesOne solenoid example responds in under 10 ms. Compare piezoelectric and solenoid proportional valves by flow, power, pressure, hysteresis, and duty cycle.→
Understanding Valve Manifold IP Ratings (IP65, IP67, IP69K) for WashdownSpecify valve manifold IP ratings by the 2-digit code, cited test standard, connectors, washdown pressure, temperature, chemicals, installation, and inspection.→
The Physics of Quick Exhaust Valves and Their Impact on Cylinder SpeedUnderstand how a 3-port quick exhaust valve changes cylinder speed through choked flow, falling back pressure, and measured 55-cycle pressure tests for sizing.→