公开(公告)号：WO1991019176A1

公开(公告)日：1991-12-12

申请号：PCT/US1991003936

申请日：1991-06-04

Applicant: HUNTER ENGINEERING COMPANY

Inventor： HUNTER ENGINEERING COMPANY

IPC: G01L05/28

CPC classification number: G01L5/288

Abstract: The brakes of a two-axle vehicle (3) are tested by weighing the vehicle and measuring the braking forces for both axles to determine the actual ratio of front axle braking force to total braking force. The deceleration (63) applied to the vehicle is determined from the weight of the vehicle and the applied braking forces. A nominal preferred value (67) of the ratio of front axle braking force to total braking force is calculated from the determined deceleration and the measured weight of the vehicle (60). For each test, upper (69) and lower limits (65) for the acceptability of the actual ratio of front axle braking force to total braking force are set based upon the computed nominal preferred value. The nominal preferred value, the movable limits, and the actual ratio are displayed to the user on a CRT screen (21). The actual ratio is displayed in the form of a bar on the screen, with the limits and nominal preferred value displayed as non-numeric indicia along the longitudinal axis of the bar.

公开(公告)号：WO1997044635A1

公开(公告)日：1997-11-27

申请号：PCT/US1997008696

申请日：1997-05-22

Applicant: HUNTER ENGINEERING COMPANY ,  JANUARY, Daniel, B.

Inventor： HUNTER ENGINEERING COMPANY

IPC: G01B11/26

CPC classification number: G01B11/2755 ,  G01B11/275 ,  G01B2210/12 ,  G01B2210/143 ,  G01B2210/30 ,  G01B2210/303

Abstract: Apparatus and method for determining the alignment positions and orientations of vehicle wheels (55-58) includes optical targets (63-66) mounted on the wheels and optical targets (67-70) mounted in a fixed relationship with respect to the surface (59-62) on which the wheels are disposed. Video cameras are used to obtain images of the various optical targets and a computer (125) is responsive to the images of the targets to determine values of wheel alignment parameters of the vehicle relative to said surface on which the vehicle wheels roll. The surface on which the wheels are disposed may be an automotive lift (121), and apparatus is disclosed for keeping the optical targets in the same position in the field of view of the camera(s) whether the lift is in its rest or in an elevated or reclined position.

Abstract translation: 用于确定车轮（55-58）的对准位置和取向的装置和方法包括安装在车轮上的光学靶（63-66）和相对于表面（59）以固定关系安装的光学靶（67-70） -62），其上设置有轮子。 视频摄像机用于获得各种光学目标的图像，并且计算机（125）响应于目标的图像来确定车辆相对于车轮滚动的所述表面的车轮对准参数的值。 轮子设置在其上的表面可以是汽车升降机（121），并且公开了用于将光学目标物保持在相机的视野内的相同位置中的装置，无论电梯是在其休息还是在 升高或倾斜的位置。

公开(公告)号：WO1997028431A1

公开(公告)日：1997-08-07

申请号：PCT/US1997000945

申请日：1997-01-30

Applicant: HUNTER ENGINEERING COMPANY

Inventor： HUNTER ENGINEERING COMPANY ,  PARKER, Paul, Daniel ,  DOUGLAS, Michael, W.

IPC: G01M01/00

CPC classification number: G01M1/225 ,  G01M1/30 ,  G01M17/022

Abstract: A wheel balancer for mounting a wheel/tire assembly has sensors (19, 21) for sensing imbalance forces, a spindle encoder (15) and a graphic signal processing chip (23). The signal processing chip also controls a CRT display (25) and controls a D.C. motor through motor control circuitry (27) and tracks spindle position from encoder (15). The balancer also includes manual inputs (29). The balancer is programmed to determine wheel imbalance from the sensors and the motor speed can be controlled to take imbalance measurements at different speeds, depending upon the conditions or desires of the operator. The use of a dc motor also facilitates dynamic braking.

Abstract translation: 用于安装车轮/轮胎组件的车轮平衡器具有用于感测不平衡力的传感器（19,21），主轴编码器（15）和图形信号处理芯片（23）。 信号处理芯片还控制CRT显示器（25）并且通过电动机控制电路（27）控制直流电动机，并且跟踪编码器（15）的主轴位置。 平衡器还包括手动输入（29）。 平衡器被编程以确定来自传感器的车轮不平衡，并且可以根据操作者的条件或期望，控制电机速度以以不同的速度进行不平衡测量。 使用直流电动机也有助于动态制动。

公开(公告)号：WO1996021840A1

公开(公告)日：1996-07-18

申请号：PCT/US1996000124

申请日：1996-01-04

Applicant: HUNTER ENGINEERING COMPANY ,  JANUARY, Daniel, B.

Inventor： HUNTER ENGINEERING COMPANY

IPC: G01B11/26

CPC classification number: G01B11/2755 ,  G01B2210/16 ,  G01B2210/283

Abstract: Apparatus and method for determining the alignment positions and orientations of vehicle wheels (30, 31, 32, 33) includes a pair of measurement transducers (10, 11), each of which is mounted on separate vehicle wheels and each of which is capable of measuring the range and relative bearing to the other. Three such pairs (42, 46) (43, 45) (44, 47) of measurement transducers are mounted on the vehicle wheels (30, 31, 32, 33) in conventional locations. A computer (1) is connected to the transducers (10, 11) and programmed to compute the toe alignment measurements in a conventional manner. The computer is further programmed to compute the coordinates of the wheels (30, 31, 32, 33), in an arbitrary coordinate system, from the relative range and bearing measurements. The coordinate system may be transformed relative to the sensor center line (CL), the vehicle thrust line (Y-axis), the vehicle frame or body center line (FCL), or any desirable reference frame, thereby providing measurements of the actual wheel positions and alignment angles in the transformed coordinate system.

Abstract translation: 用于确定车轮（30,31,32,33）的对准位置和取向的装置和方法包括一对测量换能器（10,11），每个测量换能器安装在分开的车轮上，每个测量换能器能够 测量到另一个的范围和相对方位。 三个这样的对（42,46）（43,45）（44,47）的测量换能器在传统位置安装在车轮（30,31,32,33）上。 计算机（1）连接到换能器（10,11），并被编程为以常规方式计算脚趾对准测量。 计算机进一步被编程为从相对范围和方位测量值在任意坐标系中计算车轮（30,31,32,33）的坐标。 可以相对于传感器中心线（CL），车辆推力线（Y轴），车辆框架或车身中心线（FCL）或任何期望的参考系来改变坐标系，从而提供实际车轮的测量 变换坐标系中的位置和对准角度。

公开(公告)号：WO1995015479A1

公开(公告)日：1995-06-08

申请号：PCT/US1994012824

申请日：1994-12-01

Applicant: HUNTER ENGINEERING COMPANY

Inventor： HUNTER ENGINEERING COMPANY ,  MCCLENAHAN, James, W. ,  BURNS, Leigh, R. ,  STIEF, Michael, T. ,  JANUARY, Daniel, B.

IPC: G01C03/00

CPC classification number: G01B11/2755 ,  G01B2210/16 ,  G01B2210/283

Abstract: An improved vehicle alignment system (1) includes automatic angle and distance range calibration whereby various vehicle distances such as track width and wheelbase may be measured electro-optically during the alignment process. The system also includes an improved process which results in shorter measurement cycles for the sensors by utilizing an electronic shutter control. The sensors (19, 21 and 23) work in pairs, and a novel synchronization scheme is used to ensure that the emitters (25) of one sensor (19) are not radiating at the same time the emitters (25) of the other sensor (21) of that pair are radiating and to determine which emitter (25) of the pair corresponding to a sensor (19) is radiating. Reflections of the emitters (25) from nearby surfaces are discriminated from direct transmissions so that the angle of incidence is accurately determined. Moreover, determination of the angle of incidence is simplified by use of a lens (95) whose image position varies in a specific manner as the imaged object moves radially away from the axis of the lens (95). The present system is particularly suited for measuring difficult alignment measurements such as toe-out on turns electro-optically with a minimal number of sensors (19, 21, 23).

Abstract translation: 改进的车辆对准系统（1）包括自动角度和距离范围校准，由此可以在对准过程期间电光测量诸如轨道宽度和轴距的各种车辆距离。 该系统还包括一种改进的过程，其通过利用电子快门控制使得传感器的测量周期更短。 传感器（19,21和23）成对工作，并且使用新颖的同步方案来确保一个传感器（19）的发射器（25）不同时辐射另一传感器的发射器（25） （21）辐射并确定对应于传感器（19）的那对发射器（25）是辐射的。 来自附近表面的发射器（25）的反射与直接传输区分开，以便准确地确定入射角。 此外，通过使用其成像位置随着成像物体径向远离透镜（95）的轴线以特定方式变化的透镜（95）而简化入射角的确定。 本系统特别适用于测量困难的对准测量，例如用最小数量的传感器（19,21,23）进行电光转换的趾部。