公开(公告)号：US5040119A

公开(公告)日：1991-08-13

申请号：US505284

申请日：1990-04-05

申请人： Gerald D. Hardy ,  John P. Hoffman ,  Larry E. Kendrick ,  Stephen W. Rector

发明人： Gerald D. Hardy ,  John P. Hoffman ,  Larry E. Kendrick ,  Stephen W. Rector

IPC分类号： A01B63/112 ,  E02F9/20

CPC分类号： E02F9/2029

摘要： Implement draft control devices are typically utilized on agricultural vehicles such as tractors and on other earthworking type vehicles. Advantageously, such control systems should respond quickly to changing soil conditions, while remaining stable so that the hitch and implement systems do not oscillate or are not changed in a rapid or erratic fashion. The instant embodiment of a draft control system includes a control system that receives hitch position control signals and engine acceleration signals, and controllably modifies the hitch position control signals in response to the rate of acceleration and deceleration of the engine. By utilizing engine acceleration and deceleration rates as opposed to mere changes in engine speed, the system is able to respond quickly to needed changes in implement depth while remaining stable during operation.

摘要翻译： 实施牵引控制装置通常用于农用车辆，例如拖拉机和其他土方工程车辆上。 有利地，这样的控制系统应当对变化的土壤条件作出快速响应，同时保持稳定，使得连接和实施系统不会以快速或不稳定的方式振荡或不改变。 牵引控制系统的本实施例包括控制系统，其接收牵引位置控制信号和发动机加速度信号，并且可响应于发动机的加速和减速速率可控地地修改牵引位置控制信号。 通过利用发动机加速和减速率与发动机转速的变化相反，系统能够快速响应实施深度所需的变化，同时在运行期间保持稳定。

公开(公告)号：US4852657A

公开(公告)日：1989-08-01

申请号：US881412

申请日：1986-07-02

申请人： Gerald D. Hardy ,  John P. Hoffman ,  Larry E. Kendrick

发明人： Gerald D. Hardy ,  John P. Hoffman ,  Larry E. Kendrick

IPC分类号： A01B63/00 ,  A01B63/111 ,  G05D3/12 ,  G05D3/20

CPC分类号： G05D3/20 ,  A01B63/1117

摘要： Agricultural vehicles have heretofore lacked an adaptive implement hitch control and have correspondingly suffered from poor controllability of the hitch when the mass of the implement is varied significantly. The apparatus employs a sensor connected to and movable with the hitch such that a variable magnitude electrical signal is delivered which corresponds to the instantaneous hitch position. This signal is electronically differentiated to produce a signal indicative of actual hitch velocity. The hitch position and velocity signals are both used as feedback signals to close the control loop of the control and thereby provide an adaptive hitch velocity control.

摘要翻译： 迄今为止，农用车辆缺乏适应性的实施牵引力控制，当车辆的质量发生显着变化时，相应地受到较差的牵引力的控制。 该装置采用传感器连接并可与牵引件一起移动，使得传递对应于瞬时牵引位置的可变幅度电信号。 该信号被电子差分以产生指示实际牵引速度的信号。 牵引位置和速度信号都用作反馈信号，以关闭控制的控制回路，从而提供自适应牵引速度控制。