JPH0360480U

JPH0360480U -

Info

Publication number: JPH0360480U
Application number: JP7645389U
Authority: JP
Priority date: 1989-06-28
Filing date: 1989-06-28
Publication date: 1991-06-13

Description

[Brief explanation of drawings]

第１図は本考案のパワーステアリング装置の主
要部を示すブロツク図、第２図は本実施例のパワ
ーステアリング装置の全体構成を示すブロツク図
、第３図ａ、第３図ｂは夫々トルク入力のメンバ
ーシツプ関数、第３図ｂは運転時間のメンバーシ
ツプ関数、第３図ｄはアシストトルクのメンバー
シツプ関数、第３図ｅは遮断出力のメンバーシツ
プ関数を示す図である。１，２……トルクセンサ、３……フアジーコン
トローラ、４……運転時間測定器、５……増幅器
、６……駆動機構、８……アシストトルク遮断手
段、９……操作部、１１−１〜１１−１５，１２
−１〜１２−７……フアジー推論部、１３，１４
……確定部。 Fig. 1 is a block diagram showing the main parts of the power steering device of the present invention, Fig. 2 is a block diagram showing the overall configuration of the power steering device of the present embodiment, and Figs. 3a and 3b are torque inputs, respectively. FIG. 3b shows the membership function of operating time, FIG. 3d shows the membership function of assist torque, and FIG. 3e shows the membership function of cutoff output. DESCRIPTION OF SYMBOLS 1, 2...Torque sensor, 3...Fuzzy controller, 4...Operation time measuring device, 5...Amplifier, 6...Drive mechanism, 8...Assist torque cutoff means, 9...Operation unit, 11- 1-11-15,12
-1 to 12-7... Fuzzy reasoning section, 13, 14
...Determined part.

補正平２．１１．２０図面の簡単な説明を次のように補正する。明細書第１４頁第１３行の「第３図ｂ」の記載
を「第３図ｃ」と訂正します。Amendment 11/20/1999 The brief description of the drawing is amended as follows. The description of "Figure 3 b" on page 14, line 13 of the specification is corrected to "Figure 3 c."

Claims

[Scope of Claim for Utility Model Registration] A power steering device that operates the steering of a vehicle based on an input signal, which includes a plurality of torque sensors that output torque signals in the direction of operation of the steering wheel of the vehicle, and a vehicle operating time. a first group of fuzzy inferences that perform fuzzy inference such that as the driving time obtained by the driving time measuring means increases, the amount of assist increases when the outputs from the torque sensor match; a first determining unit that obtains a non-fuzzy determined value based on the parallel outputs of the fuzzy inference units of the first group; and an assist unit that operates the steering wheel in a predetermined direction based on the output of the first determining unit. an operation unit that outputs the amount; a second group of fuzzy inference units that provides an output to stop the assist amount when the outputs of the plurality of torque sensors differ by a predetermined level or more; and an output of the second group of fuzzy inference units; A power steering device comprising: a second determining section that obtains a non-fuzzy determined value based on the output of the second determining section; and an assist torque cutoff means that stops assisting by power steering based on the output of the second determining section.