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51. 发明授权

US4130322A Single gain skid control valve and skid control system 失效
标题翻译：单增益防滑控制阀和防滑控制系统
公开(公告)号：US4130322A
公开(公告)日：1978-12-19
申请号：US840417
申请日：1977-10-07
申请人： Robert D. Cook
发明人： Robert D. Cook
IPC分类号： B60T8/36 , B60T8/02
CPC分类号： B60T8/367 , B60T8/3615 , B60T8/3695
摘要： A vehicle skid control system including a wheel speed transducer, skid control circuitry responsive to the transducer for generating a control current output and a skid control valve responsive to the control current for providing single-gain control in a skid control mode. The skid control valve includes a first stage for generating a control pressure which is controlled exclusively by the current output of the valve driver, which control pressure is representative of the threshold pressure which an input metered pressure should not exceed if a skid condition is to be avoided. The control valve further includes a second stage pressure balancing system responsive to the pressure for allowing the metered supply pressure to be applied to a brake port as long as the metered pressure does not exceed the first stage control pressure. When the metered pressure exceeds the control pressure the second stage becomes operative to modulate the brake port pressure in accordance with the control pressure completely independently of variations in the metered pressure as long as the metered pressure remains above the control pressure from the first stage, thereby providing the single gain characteristic in the skid control mode.
摘要翻译：一种车辆滑行控制系统，包括轮速传感器，响应于换能器产生控制电流输出的滑移控制电路和响应于控制电流的滑动控制阀，以提供滑道控制模式中的单增益控制。滑动控制阀包括用于产生仅由阀驱动器的当前输出控制的控制压力的第一级，该控制压力表示如果滑动条件将为输入计量压力不应超过的阈值压力避免。控制阀还包括响应于压力的第二级压力平衡系统，只要计量压力不超过第一级控制压力，允许将计量供给压力施加到制动端口。当计量压力超过控制压力时，只要计量压力保持高于来自第一级的控制压力，第二级就可以根据控制压力完全独立于计量压力的变化来调节制动器端口压力，从而在滑移控制模式下提供单增益特性。

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