Simplified supplying system of the position identification potentiometers of electronic memory mechanisms of a motor for setting automobile vehicle seats and the like

• US 5,253,138 A
• Filed: 01/24/1992
• Issued: 10/12/1993
• Est. Priority Date: 07/04/1989
• Status: Expired due to Fees

• Current Assignee: Ets. Cousin Freres
• Original Assignee: Ets. Cousin Freres
• Inventors: Leroy, Yannick, Lhomer, Philippe, Droulon, Georges
• Primary Examiner(s): Pellinen, A. D.
• Assistant Examiner(s): Fleming, Fritz M.
• Application Number:
  US07/825,744
• Time in Patent Office: 627 Days
• Field of Search: 364/424.05, 296/65.1, 297/344, 307/355, 307/356, 307/358, 307/540, 307/9.1, 307/10.1, 341/155-158, 318/568.1, 318/255, 318/466, 318/467, 361/245
• US Class Current: 361/245
• CPC Class Codes: G05B 19/351 the positional error is used to control continuously the servomotor according to its magnitude
• CPC Class Codes: G05B 2219/37462 Resistor, potentiometers
• CPC Class Codes: G05B 2219/41142 Compensation of servocontrol signals as function of changing supply voltage
• CPC Class Codes: G05B 2219/45022 Auto seat, dentist chair, roll wheel chair
• CPC Class Codes: G05D 3/1472 with potentiometer

Abstract

A setting in position identification potentiometer is connected to terminals of the motor. The motor is supplied with a voltage (U_feed) possibly variable and switchable between two reverse polarity states according to rotation direction. The potentiometer has a slider which is connected via a first dividing bridge to input of an analog-digital converter subjected to a reference voltage (U_ref) connected to same possibly variable voltage via a second dividing bridge. Output of the analog-digital converter is connected to an electronic module. The resistor value at the ground of each of the two dividing bridges is respectively equal to a product of the other resistor value by a same multiplying coefficient A.

Claims

1. A simplified supplying system for potentiometers usable in an electronic memorization of position of a motor, said supplying system comprising:

an electronic module; and

an identification potentiometer for setting an adjusted position connected directly in parallel to terminals of said motor, said terminals of said motor being supplied with a first voltage that is variable and switchable between two reverse polarity states according to a rotation direction of said motor, wherein a reversal of one of said polarity states results in a reversal of voltage applied to said potentiometer, with said potentiometer having a slider that is connected via a first dividing bridge, which includes a first resistor connected to said slider of said potentiometer and a second resistor connected to a ground of a supplying system, to an input of an analog-digital converter that is subjected to a further reference voltage connected to said first voltage via a second dividing bridge, which includes a third resistor connected to said first voltage and a fourth resistor connected to a ground of a supplying system of said first voltage, with an output of said analog-digital converter being connected to said electronic module, and with a resistor value of said second and fourth resistors of said first and second dividing bridges being equal to a product of a resistor value of said respective first and third resistors multiplied by a same coefficient A.