To suppress occurrence of overshoot and hunting in temperature control when an environmental temperature is relatively high.SOLUTION: Until a temperature T detected by a thermister provided in a seat body reaches a set control switching temperature CT1, on/off control is performed to set an energization ratio for a heater, provided in the seat body, to a predetermined value or larger; and after the detected temperature T reaches the control switching temperature CT1, PID control is performed to control energization of the heater so that the detected temperature T coincides with a target temperature CT2. A calculation unit calculates a slope a of a change in the detected temperature T during a period in which the control unit performs the on/off control. A setting unit sets the control switching temperature CT1 when the inclination a of the change in the detected temperature T calculated by the calculation unit is larger than a threshold value, to be lower than the control switching temperature CT1 when the inclination a of the change in the detected temperature T is equal to or smaller than the threshold value.SELECTED DRAWING: Figure 7

    【課題】環境温度が比較的高い場合の温度制御にオーバシュートやハンチングが発生することを抑制する。【解決手段】制御部は、シート本体に設けられたサーミスタによる検出温度Tが設定された制御切替温度CT1に達する迄は、シート本体に設けられたヒータの通電割合を所定値以上にするオンオフ制御を行い、検出温度Tが制御切替温度CT1に達した後は、検出温度Tが目標温度CT2に一致するようにヒータの通電を制御するPID制御を行う。算出部は、制御部がオンオフ制御を行っている期間における検出温度Tの変化の傾きaを算出し、設定部は、算出部によって算出された検出温度Tの変化の傾きaが閾値よりも大きい場合の制御切替温度CT1を、検出温度Tの変化の傾きaが前記閾値以下の場合の制御切替温度CT1よりも低く設定する。【選択図】図7


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    Title :

    SEAT HEATER AND MOVING BODY SEAT


    Additional title:

    シートヒータおよび移動体用シート


    Contributors:
    KIM DONG-HYUN (author) / TAKATSUKI RYOTA (author) / AKITA MARINO (author) / TOKUSHIGE JUN (author) / TSUDA YUTO (author)

    Publication date :

    2023-09-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES , Systeme zum Steuern oder Regeln nichtelektrischer veränderlicher Größen / B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet



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