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1. 发明申请

WO1988001407A1 VEHICLE DOCKING APPARATUS AND METHOD 审中-公开
标题翻译：车辆锁定装置和方法
公开(公告)号：WO1988001407A1
公开(公告)日：1988-02-25
申请号：PCT/US1986002210
申请日：1986-10-20
申请人： CATERPILLAR INDUSTRIAL INC.
发明人： CATERPILLAR INDUSTRIAL INC. , MELOCIK, Grant, C.
IPC分类号： G05D01/02
CPC分类号： G05D1/0225 , G05D1/0223
摘要： Automatic guided vehicles are commonly used in industrial material handling operations. Such vehicles must be accurately docked at predetermined stop locations without the guidance or assistance of human operators. The subject apparatus (10) is used in conjunction with a vehicle (12) having a vehicle drive circuit (14) for controllably propelling the vehicle (12) at a velocity responsive to a velocity command signal. At least one ground engaging wheel (22, 22') is equipped with a vehicle brake (28, 28') for controllably stopping the vehicle (12) in response to a brake actuation signal. A position determining element (74) produces a controlled stop signal in response to the vehicle (12) being positioned a predetermined distance from the desired stop location, and an absolute stop signal in response to the vehicle (12) being positioned at the desired stop location. A logic control circuit (16) receives the stop signals and produces a brake actuation signal having a value sufficient to partially engage the vehicle brake (28, 28') and a velocity command signal having a value sufficient to continue to propel the vehicle (12) at a predetermined low velocity in response to receiving the controlled stop signal. The logic control circuit (16) produces a velocity command signal having a minimum value in response to receiving the absolute stop signal.

2. 发明申请

WO1986005453A1 APPARATUS AND METHOD FOR TESTING VEHICLE BRAKES 审中-公开
标题翻译：用于测试车辆制动器的装置和方法
公开(公告)号：WO1986005453A1
公开(公告)日：1986-09-25
申请号：PCT/US1985001199
申请日：1985-06-24
申请人： CATERPILLAR INDUSTRIAL INC.
发明人： CATERPILLAR INDUSTRIAL INC. , MELOCIK, Grant, C. , WIBLE, John, E.
IPC分类号： B60T17/22
CPC分类号： B60T17/221 , G01L5/28
摘要： The brake test apparatus (10) operates in conjunction with a vehicle having a source of power (46), a traction motor (52) controllably connected to the power source (46) and to at least one vehicle wheel, and a vehicle brake (12) associated with at least one vehicle wheel. An actuator (18) controllably engages and disengages the vehicle brake (12) in response to receiving respective brake control signals, and a transducer (40) produces wheel rotation signals in response to rotation of at least one of the vehicle wheels. A processor (54) controllably delivers a brake engaging signal to the actuator (18) and engages the vehicle brake (12). A predetermined amount of power from the power source (46) is delivered to the traction motor (52) for a predetermined period of time. In response to receiving wheel rotation signals from the transducer (40), the processor (54) determines the degree of rotation of the vehicle wheels during at least a predetermined portion of the period of time that the traction motor (52) is energized, and produces a brake status signal in response to amount of rotation of the vehicle wheels. The brake test apparatus (10) advantageously produces an objective result, and is fully automatic in operation. Therefore, it is particularly well suited to use on unmanned vehicles.
摘要翻译：制动试验装置（10）与具有动力源（46）的车辆，可控地连接到动力源（46）和至少一个车轮的牵引电动机（52）和车辆制动器 12）与至少一个车轮相关联。响应于接收到相应的制动控制信号，致动器（18）可控制地接合和分离车辆制动器（12），并且换能器（40）响应于至少一个车辆车轮的旋转产生车轮旋转信号。处理器（54）可控制地将致动器接合信号传送到致动器（18）并接合车辆制动器（12）。来自电源（46）的预定量的动力被输送到牵引电动机（52）一段预定的时间。响应于来自换能器（40）的接收轮旋转信号，处理器（54）在牵引电动机（52）被通电的时间段的至少预定部分期间确定车轮的旋转程度，以及响应于车轮的旋转量而产生制动状态信号。制动器测试装置（10）有利地产生目标结果，并且在操作中是全自动的。因此，特别适用于无人驾驶车辆。

3. 发明申请

WO1986004317A1 OPTICAL POSITION CONTROLLER 审中-公开
标题翻译：光学位置控制器
公开(公告)号：WO1986004317A1
公开(公告)日：1986-07-31
申请号：PCT/US1985000543
申请日：1985-04-01
申请人： CATERPILLAR INDUSTRIAL INC.,
发明人： CATERPILLAR INDUSTRIAL INC., , MELOCIK, Grant, C. , WIBLE, John, E.
IPC分类号： B66F09/24
CPC分类号： B66F9/0755
摘要： Controlling arrangements of the type used for aligning a load engaging assembly with a load to be lifted tend to be bulky, costly, unable to accurately position the load engaging assembly with the load to be lifted, and unable to accommodate different types of load supporting structures. A controlling arrangement (48) having a signal assembly (50) having first and second spaced apart portions (52, 54) is provided. The first portion (52) is adapted to deliver a first signal (60) and receive a reflection of the first signal (62) and the second portion (54) is adapted to deliver a second signal (64) and to receive a reflection of the first signal (66). A single sensing device (56) is adapted to receive the reflected signals (62, 66) and a selecting device (58) controls the operation of the first and second signal assembly portions (52, 54). Therefore, the problems of bulk, cost, inaccuracy and flexibility are eliminated. The controlling arrangement (48) is particularly suited for use on a material handling vehicle (10).

4. 发明申请

WO1987007451A1 FAULT PROTECTION APPARATUS 审中-公开
标题翻译：故障保护装置
公开(公告)号：WO1987007451A1
公开(公告)日：1987-12-03
申请号：PCT/US1986001453
申请日：1986-07-14
申请人： CATERPILLAR INDUSTRIAL INC.
发明人： CATERPILLAR INDUSTRIAL INC. , MELOCIK, Grant, C.
IPC分类号： H02H07/08
CPC分类号： H02H7/0844
摘要： Motor control circuits having fault protection devices are in commercial use today. Such devices typically include logic elements requiring a conditioned power supply, and are incapable of operation directly from the main motor power supply. The subject apparatus (10) includes a timing circuit (42) for monitoring the electrical conduction of a power switching element (16) associated with an electrical motor (18). The apparatus (10) produces a fault signal in rsponse to the power switching element (16) continuing to conduct for longer than a predetermined continuous period of time. A latch (66) receives the fault signal and responsively produces a blocking signal. An interrupt circuit (74) receives the blocking signal and responsively controllably blocks power from the motor power supply (12) to the electrical motor (18). Each of the timing, latch, and interrupt circuits (42, 66, 74) is adapted to operate directly from the motor power supply (12) and independent of any intermediate logic power supplies or associated logic devices.

5. 发明申请

WO1987004670A1 CONTACT SENSING APPARATUS AND METHOD USING ACOUSTIC SIGNAL 审中-公开
标题翻译：接触感应器和使用声学信号的方法
公开(公告)号：WO1987004670A1
公开(公告)日：1987-08-13
申请号：PCT/US1986000877
申请日：1986-04-25
申请人： CATERPILLAR INDUSTRIAL INC.
发明人： CATERPILLAR INDUSTRIAL INC. , MELOCIK, Grant, C. , WIBLE, John, E.
IPC分类号： B60K28/14
CPC分类号： B60T7/22 , B60K31/0008 , B60Y2200/15
摘要： A sensing apparatus capable of delivering a control signal in response to contact between an element of the apparatus and an external object should respond readily to a predetermined level of contact, and should be sensitive along all portions of the contact sensing surface. The instant invention provides a contact sensing apparatus (10) including a conduit (20) having a generally hollow tubular construction and being formed from a resilient deformable material. A sonic generator (14) is connected to one end of the conduit (20) and a sonic detector (18) is connected to the other end of the conduit (20). An electrical circuit (32) is connected to the sonic generator (14) and sonic detector (18), and is adapted to controllably produce a control signal in response to contact between the conduit (20) and an external object. The instant invention is advantageously free from electro-mechanical switches and optical devices likely to be contaminated when used in an industrial environment, and requires no seals or other precautions necessary to contain pressure or fluid within the conduit (20).

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