EP0218120A2
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EP
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Suspension controller
Assignee: Toyota Motor Corp
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Filing: 1986-09-15
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Granted: —
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Expires: 2006-09-15
Abstract
Abstract A suspension controller of a vehicle having a suspension between a body and a wheel, includes: a vehicle height detection means (M1) for detecting a vehicle height at a front wheel and for generating a vehicle height signal according to the detected height; a determination means (M2) for receiving the vehicle height signal, and for generating height data responsive to the vehicle height signal, for determining whether the difference between the maximum and the minimum value of the height data during a predetermined period is greater than a reference value, the period being determined within a cycle time of sprung mass vibration, and for generating a suspension control signal, and a suspension characteristic alteration means (M3) for altering characteristics of the suspension in response to the suspension control signal.
Inventors
- 👤 Shuuichi Buma
- 👤 Toshio Onuma
- 👤 Kaoru Ohashi
- 👤 Masami Itou
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 09:59
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/015; B60G17/016; B60G17/0165; B60G21/00; B60G21/02; B60G21/04; B60G21/05; B60G21/055; B60G21/0551; B60G21/0553; B60G21/0556; B60G21/0558; B60G2400/00; B60G2400/20; B60G2400/206; B60G2400/60; B60G2400/80; B60G2400/82; B60G2400/821; B60G2400/90; B60G2400/91; B60G2500/00; B60G2500/30; B60G2600/00; B60G2600/02; B60G2800/00; B60G2800/16; B60G2800/162; B60G2800/90; B60G2800/91; B60G2800/916
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
139 words
A suspension controller for a vehicle having a suspension between a body and a wheel, comprising: vehicle height detection means for detecting a vehicle height at a front wheel and for generating a vehicle height signal according to said detected height; determination means having means for receiving said vehicle height signal, means for generating height data responsive to said vehicle height signal, means for determining whether the difference between a maximum and a minimum value of said height data during a predetermined period is greater than a reference value, said period being smaller than a cycle time of sprung mass vibration of said vehicle, and means for generating a suspension control signal in response to said height data; and a suspension characteristic alteration means for altering at least characteristic of the suspension in response to said suspension control signal.
Claim 2
Dependent Claim
139 words
A suspension controller for a vehicle having a suspension between a body and a wheel, comprising: vehicle height detection means for detecting a vehicle height at a front wheel and for generating a vehicle height signal according to said detected height; determination means having means for receiving said vehicle height signal, means for generating height data responsive to said vehicle height signal, means for determining whether the difference between a maximum and a minimum value of said height data during a predetermined period is greater than a reference value, said period being smaller than a cycle time of sprung mass vibration of said vehicle, and means for generating a suspension control signal in response to said height data; and a suspension characteristic alteration means for altering at least characteristic of the suspension in response to said suspension control signal.
Claim 3
Dependent Claim
27 words
A suspension controller as claimed in claim 1, wherein said period has a value between a half cycle and a full cycle of said sprung mass vibration.
Claim 4
Dependent Claim
29 words
A suspension controller as claimed in claim 1 or claim 2, wherein said height data is a function of a displacement of said distance from an average value thereof.
Claim 5
Dependent Claim
26 words
A suspension controller as claimed in claim 1 or claim 2, wherein said height data is a function of a speed of change of said distance.
Claim 6
Dependent Claim
26 words
A suspension controller as claimed in claim 1 or claim 2, wherein said height data is a function of an acceleration of change of the distance.
Claim 7
Dependent Claim
28 words
A suspension controller as claimed in claim 1 or claim 2, wherein the determination means generates an amplitude of a vibration of the distance as the height data.
Claim 8
Dependent Claim
42 words
The suspension controller as claimed in Claim 3 including means for detecting a speed of said vehicle, wherein said means for generating a suspension control signal includes means for generating said suspension control signal as a function of said detected vehicle speed.
Claim 9
Dependent Claim
50 words
The suspension controller as claimed in Claim 7 including means for detecting a state of one of acceleration and deceleration of said vehicle, wherein said means for generating said suspension control signal includes means for generating said suspension control signal as a function of said detected acceleration and deceleration conditions.
Claim 10
Dependent Claim
49 words
The suspension controller as claimed in Claim 8 including means for setting said predetermined period as one of an alteration determination period T1 and a subsequent returning determination period T2, wherein: T1 < T2 and said reference value is greater during determination period T1 than during determination period T2.
Claim 11
Dependent Claim
50 words
The suspension controller as claimed in Claim 9 wherein said means for generating a suspension control signal includes means for generating said suspension control signal during a determination period T2 only upon said height data being greater than said reference value for three consecutive ones of said determination period T2.
References Cited (Backward Citations)
No citation records indexed.
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