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    • 2. 发明公开
    • BRAKING DISTANCE SUPPRESSION DEVICE
    • 制动距离抑制装置
    • EP3173283A1
    • 2017-05-31
    • EP15824212.3
    • 2015-07-02
    • Hitachi Construction Machinery Co., Ltd.
    • TAKEDA KoeiSAITO Shinjiro
    • B60L7/24B60L11/12B60T7/12B60T8/17B60W10/04B60W10/08B60W10/18B60W10/184
    • B60T8/72B60L7/24B60L7/26B60L50/13B60L50/15B60T7/12B60T8/17B60T8/172B60T8/18B60T8/245B60T8/52B60T2210/12B60T2220/04B60W10/04B60W10/08B60W10/18B60W10/184B60W30/18127
    • A braking distance control device employed for an electrically driven work vehicle includes a safety vehicle speed calculation unit 9 that calculates a safety vehicle speed at which a braking distance provided by use of an electric brake device becomes less than or equal to a threshold value, based on gradient information, payload information, road surface friction information, vehicle speed information, and a braking torque characteristic of electric motors. Preferably, the braking distance control device includes: a critical vehicle speed for deceleration calculation unit 5 that calculates a critical vehicle speed for deceleration at which deceleration provided by use of the electric brake device becomes less than or equal to a threshold value; a vehicle speed judgment unit 8 that judges whether the work vehicle can be stopped within a set distance by the electric brake device, based on result of comparing the vehicle speed information with the safety vehicle speed and the critical vehicle speed for deceleration; a notification command unit 17 that calls the operator's attention or prompts a brake operation, based on the result of the judgment; an operation judgment unit 14 that judges a setting of notification, based on pedal operation amounts; and a logical product calculation unit 15 that outputs a setting of a notification operation, based on result of the judgments by the vehicle speed judgment unit 8 and the operation judgment unit 14.
    • 本发明的电动式作业车辆的制动距离控制装置具有:安全车速计算部9,其基于由电动制动装置提供的制动距离成为阈值以下的安全车速 根据梯度信息,有效载荷信息,路面摩擦信息,车辆速度信息和电动机的制动转矩特性。 优选的是,制动距离控制装置包括:减速度临界车速计算部5,其计算使用电动制动装置所提供的减速度成为阈值以下的减速临界车速; 车速判定部8,根据车速信息与安全车速和减速用临界车速的比较结果,判定电动制动装置是否能够在设定距离内停止作业车辆; 基于判定结果,通知驾驶员注意或提示制动操作的通知指令部17; 操作判断单元14,其基于踏板操作量来判断通知的设定; 以及逻辑积计算单元15,其基于车速判断单元8和操作判断单元14的判断结果输出通知操作的设置。