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    • 3. 发明公开
    • DAMPING FORCE CONTROLLER
    • DÄMPFUNGSKRAFT-STEUERGERÄT
    • EP2415621A1
    • 2012-02-08
    • EP09825630.8
    • 2009-03-31
    • Toyota Jidosha Kabushiki Kaisha
    • HAYASHI, TaisukeMIZUTA, YuichiLIU, Yanqing
    • B60G17/015B60G17/018F16F9/50
    • F16F15/002B60G17/018B60G17/08B60G2400/202B60G2500/10B60G2600/1875
    • A control mode for a damping force characteristic is set to be a variable control when a product of the sum x b ' of sprung member speeds and a sprung-member-unsprung-member-relative-speed x s ' is positive. Accordingly, when the vibration in a middle/high frequency range is not being input to a suspension apparatus SP, an operation of a variable throttle mechanism 30 is controlled in such a manner that a step number representing the damping force characteristic of a damper 20 varies in accordance with a vibration state of a sprung member HA based on a Nonlinear H ∞ control theory. Further, when the product of the sum x b ' of sprung member speeds and the sprung-member-unsprung-member-relative-speed x s ' is negative, the control mode is set to be an operation prohibiting control. Consequently, when the vibration in the middle/high frequency range is being input to the suspension apparatus SP, the operation of the variable throttle mechanism 30 is prohibited, and an increase in the operation frequency of or in the operation amount of the variable throttle mechanism 30 is therefore suppressed. Accordingly, the durability of the variable throttle mechanism 30 is improved.
    • 当弹簧构件速度和x b'和簧上构件 - 簧下构件相对速度x s'的乘积为正时,将阻尼力特性的控制模式设定为可变控制。 因此,当中间/高频范围的振动未被输入到悬挂装置SP时,可变节流机构30的操作被控制为使得表示阻尼器20的阻尼力​​特性的步数变化 根据非线性Hž控制理论的簧上部件HA的振动状态。 此外,当弹簧构件的和x b'的乘积和弹簧构件 - 簧下构件相对速度x s'为负时,控制模式被设定为操作禁止控制。 因此,当中间/高频范围的振动被输入到悬挂装置SP时,可变节流机构30的操作被禁止,并且可变节流机构的操作频率或操作量的增加 30因此被抑制。 因此,可变节流机构30的耐久性提高。
    • 6. 发明公开
    • DAMPING FORCE CONTROLLER
    • 阻尼力控制器
    • EP2399766A1
    • 2011-12-28
    • EP09840382.7
    • 2009-02-23
    • Toyota Jidosha Kabushiki Kaisha
    • OGAWA, AtsushiHONMA, MotohikoOKIMURA, KoutaroHAYASHI, TaisukeWATANABE, Takahito
    • B60G17/018B60G17/015B60G17/016
    • B60G17/016B60G17/018B60G17/08B60G2202/24B60G2400/102B60G2400/202B60G2400/206B60G2400/252B60G2400/91B60G2500/102B60G2600/184B60G2600/187B60G2800/162B60G2800/916
    • The magnitude of a linear damping coefficient C s is set so as to decrease the greater a maximum amplitude value α of an intermediate frequency sprung acceleration is. In the case where a damping force control apparatus carries out control for dampening vibrations of a sprung member using a nonlinear H-infinity control theory, the linear damping coefficient C s is set to a high value when the maximum amplitude value α of the intermediate frequency sprung acceleration inputted to a suspension apparatus is low. Accordingly, a requested damping force F req also increases, which makes it possible to quickly dampen vibrations in the sprung member. Meanwhile, in the case where the maximum amplitude value α of the intermediate frequency sprung acceleration is high, the linear damping coefficient C s is set to a low value. Accordingly, the requested damping force F req also decreases, which makes it possible to suppress degradation in the riding quality when intermediate frequency vibrations are inputted, and particularly makes it possible to suppress riding quality degradation when the vibration speed is high.
    • 线性阻尼系数Cs的大小被设定为减小中频簧上加速度的最大振幅值α越大。 在衰减力控制装置使用非线性H-无穷大控制理论对簧上部件的衰减振动进行控制的情况下,当中频的最大振幅值α弹出时,线性衰减系数Cs被设定为高值 输入到悬架装置的加速度低。 因此,要求衰减力Freq也增大,能够迅速抑制簧上部件的振动。 同时,在中频簧上加速度的最大幅值α高的情况下,线性阻尼系数Cs被设置为低值。 因此,所要求的阻尼力Freq也减小,这使得可以在输入中频振动时抑制乘坐舒适度的降低,并且特别地可以在振动速度高时抑制乘坐舒适性劣化。