Automatic speed control with lash compensation

Details Automatic speed control with lash compensation Automatic speed control with lash compensation

1996-11-25

1998-11-10

Louis-Jacques, Jacques H.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Indication or control of braking, acceleration, or deceleration

701110, 123352, 123400, 123402, G06F 700, G06F 1700

Patent

active

058358773

ABSTRACT:
Mechanical lash in a cruise control system including a cruise control actuator linked to an engine intake air valve through a cruise cable assembly is automatically measured and stored for use in cruise control operations. The cruise control actuator is driven from a base position along a position schedule while an engine parameter responsive to change in intake air valve position is monitored for any significant parameter change indicating movement of the intake air valve in response to the actuator movement. The amount of actuator movement required before any significant change occurs in the engine parameter is stored as representing the mechanical lash. Cruise control commands are augmented by the learned mechanical lash before being applied to the cruise control actuator.

REFERENCES:
patent: 4885692 (1989-12-01), Kurihara et al.
patent: 4928780 (1990-05-01), Tada
patent: 5521825 (1996-05-01), Unuvar et al.
patent: 5680024 (1997-10-01), Ehle et al.

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