# Drive Wheel Motor Torque Calculations

• Engineering
• OZwurld
In summary, the conversation discusses vehicle design criteria such as gross vehicle weight, weight on each drive wheel, and radius of wheel/tire. The desired top speed and acceleration time are unknown and need to be calculated. The maximum incline angle and working surface are also mentioned. The speaker also clarifies that a value for t cannot be arbitrarily chosen and needs to be calculated based on the desired acceleration time and top speed.
OZwurld
Hello,

Example vehicle design criteria:

▪ Gross vehicle weight (GVW): 190kg*9.81 = 1863.9N
▪ Weight on each drive wheel (WW): 1.84kg *9.81 = 18N
▪ Radius of wheel/tire (Rw): 216mm
____________________________________________________
▪ Desired top speed (Vmax): ?
▪ Desired acceleration time (ta): ?
____________________________________________________
▪ Maximum incline angle (α): 2 degree
▪ Worst working surface: concrete (good)

TTE [N] = RR[N] + GR[N] + FA[N]
Where:
TTE = total tractive effort [N]
RR = force necessary to overcome rolling resistance [N]
GR = force required to climb a grade [N]
FA = force required to accelerate to final velocity [N]

->> what value of t do i use , do i also just pick a value that suits me like i did with the velocity?
___________________________________________________________

TTE = (16.72+1393*sind(2)+((1393*10)./(9.81*t)))
___________________________________________________________

Thanks..

No, you don't pick a value for t. t is the time (in seconds) it takes for the vehicle to reach its desired top speed. You can calculate t based on the desired acceleration time ta and the top speed Vmax. For example, using the equation V = V0 + at, you can calculate t by solving for t: t = (Vmax - V0)/a, where V0 is the initial velocity.

## 1. What is the formula for calculating drive wheel motor torque?

The formula for calculating drive wheel motor torque is torque = force x radius, where force is the amount of force applied to the wheel and radius is the radius of the wheel.

## 2. How do you determine the force applied to the drive wheel?

The force applied to the drive wheel can be determined by taking into account the weight of the vehicle, the incline or slope of the surface, and the rolling resistance of the wheel.

## 3. What factors affect the torque required for a drive wheel motor?

The torque required for a drive wheel motor is affected by the weight of the vehicle, the type of surface the vehicle is driving on, the incline or slope of the surface, and any additional external forces acting on the vehicle.

## 4. How do you calculate the torque required for a specific vehicle?

To calculate the torque required for a specific vehicle, you will need to know the vehicle's weight, the radius of the drive wheel, and any external forces acting on the vehicle. With this information, you can use the torque formula to calculate the required torque.

## 5. What is the importance of drive wheel motor torque calculations?

Drive wheel motor torque calculations are important because they help determine the amount of torque needed for a vehicle's drive wheels to move and perform efficiently. This information is crucial for designing and selecting the appropriate motor for a vehicle, as well as for optimizing the vehicle's performance and energy efficiency.

Replies
12
Views
2K
Replies
102
Views
5K
Replies
5
Views
4K
Replies
8
Views
5K
Replies
1
Views
821
Replies
2
Views
1K
Replies
1
Views
1K
Replies
58
Views
6K
Replies
2
Views
3K
Replies
1
Views
972