Title:
THERMAL GAS FLOW RATE ESTIMATING DEVICE
Document Type and Number:
Japanese Patent JP2019090618
Kind Code:
A
Abstract:
To provide a thermal gas flow rate estimating device that can accurately compensate a response delay of a detection value of a device even when noises are included in the detection value.SOLUTION: A thermal gas flow rate estimating device estimates a flow rate of gas in which a response delay is compensated. The device comprises: a detection unit (62) that detects a detection value of a flow rate of gas using a heat transfer; a delay model (86) that represents a response delay with respect to a flow rate change of the gas using a time constant; a calculation unit (87) that calculates an estimated value of the flow rate based on the delay model; and a state observer (88) that estimates the flow rate in which the response delay is compensated based on the estimated value calculated by the calculation unit and the detection value detected by the detection unit.SELECTED DRAWING: Figure 9
Inventors:
NITTA NOBUHIRO
Application Number:
JP2017217529A
Publication Date:
June 13, 2019
Filing Date:
November 10, 2017
Export Citation:
Assignee:
DENSO CORP
International Classes:
G01F1/696
Attorney, Agent or Firm:
Tsuyoshi Yamada
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita