An opening degree control system and control method of an intelligent temperature control valve

By using the intelligent temperature control valve's opening control system to dynamically calculate adaptive thresholds and generate composite drive signals, the problems of jamming, misjudgment, and hydraulic oscillation in the intelligent temperature control valve during small opening adjustments are solved, enabling accurate discrimination and stable adjustment under different temperature environments.

CN122411641APending Publication Date: 2026-07-17CANGZHOU CHANGYUAN PIPE FITTINGS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CANGZHOU CHANGYUAN PIPE FITTINGS CO LTD
Filing Date
2026-05-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing intelligent temperature control valves suffer from problems such as jamming and misjudgment when adjusting small openings, high system complexity, and hydraulic oscillations caused by sudden changes in opening. In particular, traditional methods cannot adapt to environmental changes caused by viscosity drift due to fluid temperature changes and thermal expansion of the valve body.

Method used

The opening control system of the intelligent temperature control valve includes a reference calibration module, a status acquisition module, a threshold calculation module, a friction determination module, and an envelope generation module. By acquiring the phase current sequence and temperature parameters, it dynamically calculates the adaptive threshold and generates a composite drive signal to overcome static friction and suppress thermal oscillation.

Benefits of technology

It enables accurate identification and smooth adjustment of the transmission mechanism state under different temperature environments, improves system adaptability and response speed, avoids abrupt changes in valve opening and hydraulic oscillation, and enhances the stability of flow regulation.

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Abstract

The present application relates to the technical fields of fluid pipe network control, and discloses an opening control system and control method of an intelligent temperature control valve, comprising a reference calibration module for controlling a driving motor to perform a reciprocating stroke to generate a static friction reference value; a state acquisition module for acquiring a target opening instruction, fluid temperature and phase current sequence; a threshold calculation module for purifying a current signal and combining a water supply temperature and the static friction reference value to reconstruct a dynamic critical threshold value; a friction determination module for comparing a real-time distortion rate with the dynamic critical threshold value to generate a locking or sliding state; an envelope generation module for identifying a thermal time constant and calculating a flutter amplitude reference; and a composite driving module for outputting a composite driving signal of a conventional PWM or a superimposed flutter waveform according to the corresponding state. Through adaptive dynamic threshold reconstruction and flutter waveform intervention, the present application overcomes the dead zone sticking error caused by temperature drift, eliminates the step mutation and hydraulic overshoot during fine tuning, and realizes smooth and accurate flow regulation.
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