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1. 发明申请

US20030010026A1 Hydrostatic transmission control system having aggressive and non-aggressive modes 审中-公开
标题翻译：具有侵略性和非侵略性模式的静液压传动控制系统
公开(公告)号：US20030010026A1
公开(公告)日：2003-01-16
申请号：US09905260
申请日：2001-07-13
申请人： Deere & Company
发明人： Mark D. Evans , Joseph G. Burgart
IPC分类号： F16D031/02
CPC分类号： F16H61/47 , B60K17/10 , B60Y2200/22 , B60Y2200/221 , F16H39/14 , F16H59/18 , F16H61/435 , F16H61/46 , F16H2059/0226 , F16H2061/6611 , F16H2061/66213 , F16H2302/04
摘要： A control system for a utility vehicle transmission provides for operator selection of vehicle nullaggressiveness,null or rates of acceleration in response to operator command. The aggressiveness of a vehicle's performance can be controlled by modulating control signals to proportional control valves, which determine the transmission acceleration, according to two or more electrical ramp-up (or ramp-down) profiles, in response to an operator's acceleration command (or deceleration command). The transmission control system includes a controller, directional switches and electro-hydraulic valves which control hydraulic pressure in the servo control system of a hydrostatic transmission. The operator is provided with a two-position set switch. With the set switch in the less aggressive position, in response to an operator's command, the software in the controller provides a relatively slow current ramp to energize the control valves. With the switch in the more aggressive position, the current ramps and resultant pressure ramps are faster, thus causing more aggressive transmission operation for the hydrostatic transmission.
摘要翻译：用于多用途车辆变速器的控制系统提供操作员选择车辆“积极性”或响应操作者指令的加速度。通过根据两个或更多个电斜坡（或斜坡下降）曲线来响应于操作者的加速指令（或者），控制信号到比例控制阀来控制车辆性能的侵略性，比例控制阀确定传动加速度减速指令）。传动控制系统包括控制器，定向开关和电动液压阀，其控制伺服控制系统中液压传动的液压。操作员设置有两位置开关。随着设定开关处于不太积极的位置，响应于操作员的指令，控制器中的软件提供相对较慢的电流斜坡以激励控制阀。随着开关处于更积极的位置，电流斜坡和合成压力斜坡更快，从而为静液压变速器带来更积极的传动操作。

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