The invention relates to the technical field of engineering machinery, and discloses a control system for a downhill working condition and an overhead working truck. The control system comprises an energy consumer; a first switching device; an energy storage device; a second switching device; the control device is used for controlling the second switch device to conduct the circuit of the energy storage device so as to pre-charge the energy storage device during power-on; when the direct-current bus voltage is equal to or greater than the first preset voltage, controlling the first switching device to conduct a circuit of the energy dissipater so as to capture the feedback current; and when the voltage is smaller than or equal to a second preset voltage, controlling the second switching device to conduct the circuit of the energy storage device so as to supply power to the driver. According to the method, a control strategy is involved, the energy storage device is pre-charged during power-on, the feedback current is captured to reduce the feedback voltage of the driver when the stall risk exists, and the pre-charged energy supplies power to the driver when the vehicle speed is reduced, so that the braking torque can be prevented from becoming small, the downhill stall risk is effectively restrained, and stable parking is achieved.
本发明涉及工程机械技术领域,公开一种用于下坡工况的控制系统及高空作业车。所述控制系统包括:耗能器;第一开关装置;储能器;第二开关装置;及控制装置,用于:在上电时,控制第二开关装置导通储能器的电路以对储能器进行预充;在直流母线电压等于或者大于第一预设电压时,控制第一开关装置导通耗能器的电路以捕获回馈电流;及在所述电压小于或等于第二预设电压时,控制第二开关装置导通储能器的电路以为驱动器供电。本发明介入控制策略,上电时预充储能器,存在失速风险时捕获回馈电流以降低驱动器的回馈电压,且车速降低时由预充能量对驱动器进行供电,由此可避免制动力矩变小,从而有效抑制下坡失速风险的出现,实现平稳停车。
Control system for downhill working condition and overhead working truck
用于下坡工况的控制系统及高空作业车
2023-07-21
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |
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