Vehicle
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United States of America Patent
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Dec 5, 2017
Grant Date -
Nov 17, 2016
app pub date -
Nov 19, 2014
filing date -
Feb 5, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A suspension characteristic is changed depending on a travel state by a simple structure. An ECU uses a vehicle speed-spring constant setting part to calculate a target spring constant depending on a vehicle speed, and uses a spring constant-frequency setting part to calculate a set frequency corresponding to the target spring constant. An oscillation input calculation part generates a signal representing an oscillation input oscillating at the set frequency. A superimposition part sets a value acquired by superimposing the oscillation input on a target driving force to a new target driving force. As a result, the wheel exhibits a minute oscillation in a longitudinal direction, resulting in an input of the minute oscillation to a suspension bush. The suspension bush changes in a spring constant and a damping coefficient depending on the frequency of the input minute oscillation. As a result, the suspension characteristic can be changed.
First Claim
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International Classification(s)
- B60K:ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF ....
- B60W:CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT....
- B60G:VEHICLE SUSPENSION ARRANGEMENTS
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- G05D:SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC....
- F16F:SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRAT....
- B60L:ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-P....
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