Proportional speed control arrangement
First Claim
1. A proportional speed control arrangement (100) for adjusting and maintaining velocity of a self-propelled vehicle having motor means (101) for applying energy to said vehicle and establishing motion thereof, said speed control arrangement (100) comprising:
- interface means (102) selectively activable for establishing velocity command signals indicative of desired directional motion of said vehicle;
circuit means (103,
104) connected to said interface means (102) and to said motor means (101) and responsive to activation of said interface means (102) and to said velocity command signals for applying to said motor means (101) energizing signals for adjusting the velocity of said vehicle from a first velocity to a second velocity;
characterized in thatsaid interface means (102) comprises acceleration switch means (KI) and enable switch means (KE) wherein said velocity of said vehicle is adjusted from said first velocity to said second velocity by activation of both said acceleration switch means (KI) and said enable switch means (KE); and
said velocity of said vehicle is substantially maintained at said second velocity by deactivation of said acceleration switch means (KI) at a time corresponding to the time of said vehicle substantially attaining said second velocity.
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0 Petitions
Accused Products
Abstract
A proportional speed control arrangement (100) is disclosed for use with vehicles requiring variable velocities of operation. Specifically, the arrangement is utilized with a traction motor apparatus (101) to provide velocity adjustments to a service type of vehicle via electronic circuitry responsive to signals generated from an interface controller (102). The interface controller (102) comprises acceleration switches (KI, KD) and an enabling switch (KE) which are responsive to activation thereof by external means to establish velocity command signals. The velocity command signals control the application of energizing signals to the motor apparatus. A requisite velocity is maintained by deactivation of the acceleration switches while correspondingly maintaining activation of the enabling switch.
15 Citations
26 Claims
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1. A proportional speed control arrangement (100) for adjusting and maintaining velocity of a self-propelled vehicle having motor means (101) for applying energy to said vehicle and establishing motion thereof, said speed control arrangement (100) comprising:
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interface means (102) selectively activable for establishing velocity command signals indicative of desired directional motion of said vehicle; circuit means (103,
104) connected to said interface means (102) and to said motor means (101) and responsive to activation of said interface means (102) and to said velocity command signals for applying to said motor means (101) energizing signals for adjusting the velocity of said vehicle from a first velocity to a second velocity;characterized in that said interface means (102) comprises acceleration switch means (KI) and enable switch means (KE) wherein said velocity of said vehicle is adjusted from said first velocity to said second velocity by activation of both said acceleration switch means (KI) and said enable switch means (KE); and said velocity of said vehicle is substantially maintained at said second velocity by deactivation of said acceleration switch means (KI) at a time corresponding to the time of said vehicle substantially attaining said second velocity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for controlling the velocity of a self-propelled vehicle having a reversible motor connected thereto, said method comprising the application of energizing signals to said motor for controlling said velocity of said vehicle:
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characterized in that said method further comprises; selectively generating an acceleration command signal indicative of a desired increase in magnitude of velocity of said vehicle; selectively generating an enable signal; and increasing the magnitude of said velocity of said vehicle and continuing to apply said energizing signals to said motor only so long as said enable signal persists. - View Dependent Claims (25, 26)
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Specification