シミュレーションの世界に引きこもる部屋

【入門】回帰分析の代表的な利用シーン【数値計算】

最小二乗法を代表とした回帰分析の代表的な利用シーンを説明 自動車業界だと、制御対象の内部パラメータの推定で使われることもある。 経年劣化で内部パラメータが変動しても回帰である程度特定可能。 これにより事前交渉検知や劣化状況に合わせた制御ポリシーの変更が可能。

2023/02/28 19:21

MATLAB,Python,Scilab,Julia比較 第2章 その1【概要偏】

本シリーズは最小二乗法を代表とした回帰アルゴリズムメイン 自動車業界だと、制御対象の内部パラメータの推定で使われることもある。 経年劣化で内部パラメータが変動しても回帰である程度特定可能。 これにより事前交渉検知や劣化状況に合わせた制御ポリシーの変更が可能。

2023/02/27 19:30

【これも見直し戦略が重要】データサイエンティスト検定試験画面解説【DS検定】

出題画面と解答状況確認画面を確認。 それほど複雑な画面ではない。 電卓画面が用意されているが、さほど機能は無い。 メモ用紙と筆記用具が渡されるので、それと併用して計算。 見直し戦略が重要。 計算問題含め、ケアレスミスしやすい問題をメモって優先的に見直す。

2023/02/25 20:02

Vehicle Diagnostic Communication back issue

IntroductionThis is a back-issue of a series that discusses various aspects of vehicle diagnostic communications.The fol

2023/02/24 19:42

[Probably the last article] Vehicle Diagnostic Communication Part 99 [Looking Back]

Brief look back. The vehicle diagnostic communication has a wide range of use cases, which makes it a broad topic. This series is now over.

2023/02/24 19:40

[CAN-FD] Vehicle Diagnostic Communication Part 98 [AUTOSAR 3]

Simulation of AUTOSAR-Dcm was executed. Simulation of AUTOSAR-Dcm, the basic principle is the same, except for the maximum message length. Simulation of AUTOSAR-CanTp. Both request and response behaved according to CAN-FD rules.

2023/02/23 19:17

[CAN-FD] Vehicle Diagnostic Communication Part 97 [AUTOSAR 2]

Fixed the configuration of AUTOSAR-CanTp for CAN-FD. Fix configuration of AUTOSAR-Dcm for CAN-FD.

2023/02/22 19:35

[CAN-FD] Vehicle Diagnostic Communication Part 96 [AUTOSAR 1]

Click here for back issues.Introduction.The policy for simulation of CAN-FD in AUTOSAR will be explained.Simulation Poli

2023/02/21 20:08

[CAN-FD] Vehicle Diagnostic Communication Part 95 [ISO-TP 3]

CAN line logged. Checked SingleFrame. SingleFrame of 7 bytes or less. SingleFrame with more than 8 bytes. FirstFrame check. FirstFrame of 4095 bytes or less. FirstFrame with 4096 bytes or more.

2023/02/20 19:18

[CAN-FD] Vehicle Diagnostic Communication Part 94 [ISO-TP 2]

I wrote the Python code for the request. SingleFrame with 8 bytes or more. MultiFrame of 4096 or more. Wrote Python code for response. Extended the size of the received frame by changing the max_frame_size parameter.

2023/02/19 19:22

[CAN-FD] Vehicle Diagnostic Communication Part 93 [ISO-TP 1]

can-isotp can probably do CAN-FD. Extended SingleFrame and Extended FirstFrame configurations were explained.

2023/02/18 19:39

【巧妙な罠】データサイエンティスト検定(リテラシーレベル) まとめ【DS検定対策】

データサイエンティスト検定リテラシーレベルを受けてきた。 受験直後の結果レポートで正答率が分かる。 合格時にさらに詳細なスコアシートが確認できる。 白本、黒本での対策で十分。 ただし、問題集に慣らす方式だとギリギリ不合格になるようなラインに難易度設定されてる可能性がある。

2023/02/17 21:30

[CAN-FD] Vehicle Diagnostic Communication Part 92 [python-can 6]

Simulation configuration review. Simulation execution of CAN-FD transmission and reception.

2023/02/16 19:30

[CAN-FD] Vehicle Diagnostic Communication Part 91 [python-can 5]

Click here for back issues.Introduction.Explanation of CAN-FD simulation in python-can.This article is about creating a

2023/02/15 19:59

[CAN-FD] Vehicle Diagnostic Communication Part 90 [python-can 4]

Click here for back issues.Introduction.Explanation of CAN-FD simulation in python-can.This is the time to replay with c

2023/02/14 19:34

[CAN-FD] Vehicle Diagnostic Communication Part 89 [python-can 3]

It was discovered that can.player and can.logger do not support CAN-FD. I immediately modified them to support CAN-FD. can.logger has a little different problem.

2023/02/13 19:38

[CAN-FD] Vehicle Diagnostic Communication Part 88 [python-can 2]

Review can.player and can.logger. Created asc file for CAN-FD and CAN mixed replay. Mixed CAN is for identifying the affected area in case of an anomaly.

2023/02/12 19:35

[CAN-FD] Vehicle Diagnostic Communication Part 87 [python-can 1]

BusMaster does not support CAN-FD. The asc format of CAN-FD is different from CAN. FDF bit and BSR bit parameters are added.

2023/02/11 19:29

[CAN-FD] Vehicle Diagnostic Communication Part 86 [Overview 2]

Simulation procedure and intuition explanation. CAN-FD control with python-can. CAN-FD diagnostic communication with can-isotp (ISO15765-2). CAN-FD diagnostic communication with AUTOSAR-CanTp (ISO15765-2). AUTOSAR-Dcm for CAN-FD diagnostic communication (ISO14229-1).

2023/02/10 19:31

[CAN-FD] Vehicle Diagnostic Communication Part 85 [Overview 1]

Switch from CAN to CAN-FD for the physical and data link layers. CAN-FD is described in Vector's "CAN/CAN-FD for Beginners".

2023/02/09 21:51

[Dcm] Vehicle Diagnostic Communication Part 84 [Simulation 23]

We saw a pattern of returning NRC$10 (generalReject) when NRC$78 (ResponsePending) exceeds a certain number of times. This specification is not specified in ISO 14229-1. However, it is likely to be a de facto standard. Therefore, it is assumed that it is incorporated as an AUTOSAR specification.

2023/02/08 20:01

[Dcm] Vehicle Diagnostic Communication Part 83 [Simulation 22]

Check the results of the WriteDataByIdentifier simulation. Confirmation of the message. Confirmation of CAN line. Often used in conjunction with ReadDataByIdentifier to check operation for reading after writing. NRC$78 returned atmosphere. In fact, NRC$78 is rarely followed three times.

2023/02/07 19:51

[Dcm] Vehicle Diagnostic Communication Part 82 [Simulation 21]

I wrote Python code to simulate WriteDataByIdentifier. WriteDataByIdentifier is often protected by session and security, so the main test is to test it.

2023/02/06 21:52

[Dcm] Vehicle Diagnostic Communication Part 81 [Simulation 20]

Check the results of the ReadDataByIdentifier simulation. Confirmation of the message. Check CAN line logs. Multi-DID specification is tricky. A request for a non-existent DID is an error. However, if the DID exists in the multi-DID, it is not an error. If the DID exists, it is not an error. However, an error may occur due to the response message length.

2023/02/05 20:25

[Dcm] Vehicle Diagnostic Communication Part 80 [Simulation 19]

I wrote Python code for simulation of ReadDataByIdentifier. Test pattern main related to ReadDataByIdentifier multi-DID. Multi-DID. Mix unsupported DIDs. Specify DIDs such that the response message length exceeds the maximum value.

2023/02/04 20:33

[Dcm] Vehicle Diagnostic Communication Part 79 [Simulation 18]

Check the results of the TesterPresents simulation. Verification of messages. Checking the CAN line log. TesterPresents with suppressPosRspMsgIndicationBit is a special AUTOSAR-Dcm specification. After S3 time extension in Dsl, the message is discarded and not passed to Dsd and Dsp. The result is different from ISO14229-1, but the practicality is more important.

2023/02/03 19:59

G検定 試験画面について解説【試験前の最低限の前準備】

対応ブラウザを用意。 一般的なブラウザであれば問題無い 回線、PCの安定化を図りましょう。 有線、再起動、サブの用意。 動作確認用チュートリアル画面で事前確認。 見直し戦略が重要。 見直し用のチェック機能に加えて、手元にメモ用紙があるといろいろ戦略が練れる。

2023/02/02 19:27

[Dcm] Vehicle Diagnostic Communication Part 78 [Simulation 17]

I wrote a Python code to simulate TesterPresents. Considering the main purpose of TesterPresents, SessionControl and SecurityAccess are also implemented. The main purpose is to suppress S3 timeouts.

2023/02/01 19:31