System and method for power seat motor control

A system for controlling a vehicle power seat motor, the system comprising:

• a controller configured to present at least one control signal;
• a control circuit configured to present at least one motor speed control signal in response to a respective at least one of the control signals;
• and
• a motor coupled to a vehicle seat mechanism, the motor configured to have motion in at least one direction in response to a respective at least one of the motor speed control signals,
• wherein speed of the motor is maintained to a predetermined curve having a ramp up segment, a steady state segment, and a ramp down segment, the ramp up segment substantially following an S-curve described by an equation SPu=(T1/(T1+exp(B−C*T1)))*(SS) and the ramp down segment substantially following an S-curve described by an equation SPd=(−T3/(T3+exp(D−E*T3)))+F,
• wherein B, C, D and E are predetermined constants, SPu is speed of the motor at a particular point in time during the ramp up segment, SPd is speed of the motor at a particular point in time during the ramp down segment, SS is the speed of the motor during the steady state segment, T1 is time referenced to start of the ramp up segment, F is the speed of the motor immediately preceding the ramp down segment, and T3 is time referenced to start of the ramp down segment, and
• wherein maintaining the speed of the motor reduces at least one of mechanical wear, erratic motion and noise of the respective seat mechanism.

A system for controlling a vehicle power seat motor, the system comprising:

• a controller configured to present at least one control signal;
• a control circuit configured to present at least one motor speed control signal in response to a respective at least one of the control signals;
• and
• a motor configured to have motion in at least one direction in response to a respective at least one of the motor speed control signals,
• wherein speed of the motor is maintained to a predetermined curve having:
• a steady state segment,
• a ramp up segment substantially following a S-curve, the S-curve described by an equation SPu=(T1/(T1+exp(B−C*T1)))*(SS), wherein B and C are predetermined constants, SPu is speed of the motor at a particular point in time during the ramp up segment, SS is the speed of the motor during the steady state segment, and T1 is time referenced to start of the ramp up segment, and
• a ramp down segment,
• wherein maintaining the speed of the motor reduces at least one of mechanical wear, erratic motion and noise of a respective seat mechanism.