Method of checking the functioning of a driving wheel slip control system

• US 5,058,423 A
• Filed: 07/10/1990
• Issued: 10/22/1991
• Est. Priority Date: 07/11/1989
• Status: Expired due to Term

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Ozaki, Masaaki, Kojima, Yoh
• Primary Examiner(s): RAEVIS, ROBERT R
• Application Number:
  US07/551,240
• Time in Patent Office: 469 Days
• Field of Search: 73/117, 73/118.1
• US Class Current: 73/115.01
• CPC Class Codes: G01L 5/282 the vehicle wheels cooperating with rotatable rolls
• CPC Class Codes: G01M 17/065 the vehicle wheels co-operating with rotatable rolls

Abstract

A method of checking the functioning of a driving wheel slip control system installed in a vehicle. Driving wheels are placed on support rollers and rotatably supported thereby. The driving wheels are driven by the engine. False signals indicative of tentative rotational speeds of trailing wheels are supplied to an ECU which in turn outputs a control signal for controlling the engine. Predetermined monitoring signals including at least the control signal output from the ECU are taken out from the driving wheel slip control system. It is determined whether the predetermined monitoring signals show values falling within respective predetermined allowable ranges. Further, a steering handle of the vehicle may be turned at the same time of rotation of the driving wheels, the steering angle of which is detected by a steering angle sensor. Further, instead of using the false signals, the trailing wheels may be placed on second support rollers for rotatably supporting the trailing wheels thereby. The second support rollers are capable of rotatively driving the trailing wheels.

Claims

1. A method of checking the functioning of a driving wheel slip control system which is installed in a vehicle having driving wheels and trailing wheels, said driving wheel slip control system having a prime mover for driving said driving wheels, at least one driving wheel speed sensor for detecting the rotational speed of at least one of said driving wheels and generating at least one signal indicative of the rotational speed of said at least one driving wheel, at least one trailing wheel speed sensor for detecting the rotational speed of at least one of said trailing wheels and generating at least one signal indicative of the rotational speed of said at least one trailing wheel, and control means responsive to said signals indicative of the rotational speeds of said at least one driving wheel and said at least one trailing wheel for outputting a control signal for controlling the output of said prime mover;

the method comprising the steps of;

(1) placing said driving wheels on support means for rotatably supporting said driving wheels by said support means;

(2) causing said prime mover to rotatively drive said driving wheels;

(3) supplying at least one false signal indicative of the rotational speed of said at least one trailing wheel to said control means in place of said at least one signal indicative of the rotational speed of said at least one trailing wheel;

(4) taking out predetermined monitoring signals including at least said control signal outputted from said control means, from said driving wheel slip control system; and

(5) determining whether said predetermined monitoring signals show values falling within respective predetermined allowable ranges.

4. A method according to any one of claims 1 or 2, wherein said predetermined monitoring signals include said at least one signal indicative of the rotational speed of said at least one driving wheel.

5. A method according to any one of claims 1 or 2, wherein said predetermined monitoring signals include at least one signal indicative of operating conditions of said prime mover.

2. A method of checking the functioning of a driving wheel slip control system which is installed in a vehicle having driving wheels, trailing wheels, and a steering handle, said driving wheel slip control system having a prime mover for driving said driving wheels, at least one driving wheel speed sensor for detecting the rotational speed of at least one of said driving wheels and generating at least one signal indicative of the rotational speed of said at least one driving wheel, at least one trailing wheel speed sensor for detecting the rotational speed of at least one of said trailing wheels and generating at least one signal indicative of the rotational speed of said at least one trailing wheel, a steering angle sensor for detecting a steering angle of said steering handle and generating a signal indicative of said steering angle, and control means responsive to said signals indicative of the rotational speeds of said at least one driving wheel and said at least one trailing wheel and said steering angle for outputting a control signal for controlling the output of said prime mover;

the method comprising the steps of;

(1) placing said driving wheels on support means for rotatably supporting said driving wheels by said support means;

(2) causing said prime mover to rotatively drive said driving wheels;

(3) supplying at least one false signal indicative of the rotational speed of said at least one trailing wheel to said control means in place of said at least one signal indicative of the rotational speed of said at least one trailing wheel;

(4) turning said steering handle;

(5) taking out predetermined monitoring signals including at least said control signal outputted from said control means, from said driving wheel slip control system; and

(6) determining whether said predetermined monitoring signals show values falling within respective predetermined allowable ranges.

3. A method according to claim 2, wherein said predetermined monitoring signals include said signal indicative of said steering angle.

6. A method according to claim 2, wherein said predetermined monitoring signals include said at least one signal indicative of the rotational speed of said at least one trailing wheel and said signal indicative of said steering angle.

7. A method according to claim 2, wherein said predetermined monitoring signals include said signal indicative of said steering angle and at least one signal indicative of operating conditions of said prime mover.

8. A method according to claim 2, wherein said predetermined monitoring signals include said at least one signal indicative of the rotational speed of said at least one trailing wheel, said signal indicative of said steering angle, and at least one signal indicative of operating conditions of said prime mover.