JP2022034681A - 電流検出装置 - Google Patents
電流検出装置 Download PDFInfo
- Publication number
- JP2022034681A JP2022034681A JP2020138493A JP2020138493A JP2022034681A JP 2022034681 A JP2022034681 A JP 2022034681A JP 2020138493 A JP2020138493 A JP 2020138493A JP 2020138493 A JP2020138493 A JP 2020138493A JP 2022034681 A JP2022034681 A JP 2022034681A
- Authority
- JP
- Japan
- Prior art keywords
- timing
- current value
- current
- time
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 230000004044 response Effects 0.000 claims description 5
- 238000005070 sampling Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F7/1844—Monitoring or fail-safe circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/2017—Output circuits, e.g. for controlling currents in command coils using means for creating a boost current or using reference switching
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2024—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control switching a load after time-on and time-off pulses
- F02D2041/2027—Control of the current by pulse width modulation or duty cycle control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2829—Testing of circuits in sensor or actuator systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F7/1844—Monitoring or fail-safe circuits
- H01F2007/1866—Monitoring or fail-safe circuits with regulation loop
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
- Electronic Switches (AREA)
Abstract
Description
これにより、制御部5がPWM制御により通電されるソレノイド2の電流の電流値を適切に検出し、ソレノイド2の駆動を適切に制御することが可能となる。
上記実施形態では、スイッチ10がn型MOS-FETであるとして説明したが、p型MOS-FETであっても良いし、その他のスイッチであっても良い。
2:ソレノイド
10:スイッチ
20:電流値検出部
22:増幅器
30:第2電流値算定部
T1:第1時間
T2:第2時間
Claims (4)
- PWM制御で通電されるソレノイドに流れる電流を検出する電流検出装置であって、
前記PWM制御により開状態及び閉状態のいずれか一方から他方に切り替えられるスイッチと、
前記スイッチが閉状態から開状態へ移行するタイミングである第1タイミングにおける前記電流の電流値を第1電流値として検出し、前記第1タイミングの直前の前記スイッチが開状態から閉状態へ移行するタイミングである第2タイミングから前記第1タイミングまでの間における前記第2タイミングから予め設定された第1時間経過後の第3タイミングにおける前記電流の電流値を第3電流値として検出する電流値検出部と、
前記第1電流値と前記第3電流値とに基づいて、前記第2タイミングにおける前記電流の電流値を第2電流値として算定する第2電流値算定部と、
を備える電流検出装置。 - 前記電流値検出部は、前記第1タイミングの直前の前記スイッチが閉状態から開状態へ移行するタイミングである第4タイミングから前記第1タイミングまでの間において、予め設定された第2時間毎に前記電流の電流値を検出する請求項1に記載の電流検出装置。
- 前記第1電流値は、前記PWM制御の1周期内における電流のピーク値である請求項1又は2に記載の電流検出装置。
- 前記電流値検出部が増幅器を有して構成され、
前記第2タイミングから次の前記第3タイミングまでの間の時間は、前記増幅器における入力応答出力の遅れ時間よりも長く設定されている請求項1から3のいずれか一項に記載の電流検出装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020138493A JP7501220B2 (ja) | 2020-08-19 | 2020-08-19 | 電流検出装置 |
US17/385,274 US11852092B2 (en) | 2020-08-19 | 2021-07-26 | Electric current detection apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020138493A JP7501220B2 (ja) | 2020-08-19 | 2020-08-19 | 電流検出装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2022034681A true JP2022034681A (ja) | 2022-03-04 |
JP7501220B2 JP7501220B2 (ja) | 2024-06-18 |
Family
ID=80270548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020138493A Active JP7501220B2 (ja) | 2020-08-19 | 2020-08-19 | 電流検出装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US11852092B2 (ja) |
JP (1) | JP7501220B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230036325A1 (en) * | 2021-07-21 | 2023-02-02 | Hioki E.E. Corporation | Testing instrument and test method |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4729056A (en) * | 1986-10-02 | 1988-03-01 | Motorola, Inc. | Solenoid driver control circuit with initial boost voltage |
JP2623242B2 (ja) | 1987-01-16 | 1997-06-25 | 本田技研工業株式会社 | 電磁作動器駆動回路の電流検出装置 |
JP2504769B2 (ja) | 1987-04-21 | 1996-06-05 | 日本電気株式会社 | 電磁コイルの電流値処理装置 |
JPH03164912A (ja) * | 1989-11-24 | 1991-07-16 | Mitsubishi Electric Corp | デューティソレノイドバルブの駆動装置 |
JP2000114038A (ja) | 1998-10-08 | 2000-04-21 | Denso Corp | 誘導性負荷の電流検出装置 |
JP2001351813A (ja) | 2000-06-05 | 2001-12-21 | Daihatsu Motor Co Ltd | ソレノイド制御装置 |
WO2010139358A1 (en) | 2009-06-03 | 2010-12-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Current measurement in switched mode power supply |
JP2011004103A (ja) | 2009-06-18 | 2011-01-06 | Hitachi Automotive Systems Ltd | ソレノイドの電流推定方法,自動変速機制御装置およびブレーキ制御装置 |
JP6339043B2 (ja) | 2015-04-21 | 2018-06-06 | 三菱電機株式会社 | 負荷電流検出装置および負荷電流検出方法 |
JP6354671B2 (ja) | 2015-06-10 | 2018-07-11 | 株式会社デンソー | 電子制御装置 |
-
2020
- 2020-08-19 JP JP2020138493A patent/JP7501220B2/ja active Active
-
2021
- 2021-07-26 US US17/385,274 patent/US11852092B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US11852092B2 (en) | 2023-12-26 |
JP7501220B2 (ja) | 2024-06-18 |
US20220056863A1 (en) | 2022-02-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7994762B2 (en) | DC to DC converter | |
EP1886153B1 (en) | Bi-directional mos current sense circuit | |
US9093836B2 (en) | Method for controlling a transistor and control circuit | |
US9912277B2 (en) | Method of forming a semiconductor device and structure therefor | |
JP4991936B2 (ja) | プルインコイルおよび/またはホールドコイルを備えた切換装置のための制御装置、および、コイルを流れる電流を制御する方法 | |
JP6246347B2 (ja) | 電磁石駆動装置 | |
JP6726737B2 (ja) | スイッチング電力変換器のための短絡保護 | |
CN110488140B (zh) | 一种电磁铁故障检测电路装置及其检测方法 | |
US20080048630A1 (en) | Switching power supply circuit | |
US10784810B1 (en) | Motor controller with accurate current measurement | |
EP2933645A1 (en) | Duty cycle independent comparator | |
JP2022034681A (ja) | 電流検出装置 | |
JP2005150550A (ja) | ソレノイド駆動装置 | |
US7839616B2 (en) | Load current sensing technique | |
US10924052B1 (en) | Motor control system with phase current polarity detection | |
JP2004247834A (ja) | Mosトランジスタによりpwm電圧制御する単相負荷の過電流検出回路 | |
JP5297408B2 (ja) | 電磁弁の制御装置 | |
EP2015086A1 (en) | Method for measuring an on-resistance of a load-path of a transistor | |
CN114123150B (zh) | 消除反电动势的电路、方法及电子设备 | |
US9740260B2 (en) | Electronic control apparatus | |
JP2006093410A (ja) | ソレノイド駆動装置 | |
US10177644B1 (en) | Input current extraction from inductor current in a voltage converter | |
US7948194B2 (en) | Waveform current monitor using RDSon of low-side bridge FET | |
US9667243B2 (en) | High speed tracking current sense system | |
CN110876216A (zh) | 半导体发光元件驱动装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20230608 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20240213 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20240220 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20240417 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20240507 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20240520 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7501220 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |