Wheel Load Vs. Acceleration

Prerequisite information

• Use the linear potentiometers to find the displacement.
• There is one linear potentiometer for each wheel (front right, front left, rear right, and rear left).

Conversions and Formulas

• Use linear potentiometer output in volts times the conversion factor found during the week of 11/6 to convert to millimeters of displacement.
• Use accelerometer output in volts times the conversion factor found during the week of 11/6 to convert to gs of acceleration.
• F_Spring = SR/MR^2 x_displacement where SR is the spring rate of a spring, MR is the motion ratio of a spring, and x_displacement is the displacement of the spring / linear potentiometer.
• F_LF = W_LF +1/4(K_H(x_LF+X_RF+X_RR+X_RL)+K_P(x_LF+X_RF-X_RR-X_LR) + K_R(x_LF-X_RF-X_RR+X_LR)q+K_w(x_LF-X_RF+X_RR-X_LR)(1-w))
• W_LF is the weight of the weight of the left front corner of the car.
• WR_i=SR_i/(MR_i)^2 for a half of the car (front or rear)
• K_H =K_P= 1/2(WR_f+WR_r)
• K_R=K_w=1/2(WR_f+2WR_roll)+1/2(WR_r+2WR_roll) (roll corresponds to the anti-roll bar).