Hi, I would like to get some help on this.

Use the correct D.C. motor for this robotic trolley.
Guidelines
1. Carries a maximum total mass of 6Kgs.
2. Goes up a slope of 30° at a linear speed of 40m/min with maximum total mass.
3. Operated by four (4) D.C. motors.
Assuming frictional coefficient of the path and wheel dimension is allowed with justifications.
P.S. total mass = load + cart structure
Explanations must be given to the design safety margin.
You can refer to the Diagram attached

After reading a few sites on the types of DC Motors, I have chosen a shunt DC motor. Am I at the right track?

 

Is this home work?
A modern DC motor typically has P.M. field so by definition is a Shunt field motor.
Max.

 

Is this home work?
A modern DC motor typically has P.M. field so by definition is a Shunt field motor.
Max.

Yup
There are 4 types of DC motors, namely permanent magnet motors, series motors, shunt motors and compound motors.
after weighing the advantages and disadvantages from https://electrical-engineering-portal.com/4-types-of-dc-motors-and-their-characteristics, I came to conclusion that Shunt Motors are suitable. Any advice?

 

Actually to distinguish between PM and shunt, the description should be 'shunt-wound field'
Series wound-field motors include automotive starters and Universal motor (power tools, vacuum motors) etc.
The nature of a series field motor is that it has very high starting torque, but essentially operates in a run away condition when unloaded.
This can also happen to a shunt wound field where the field supply is lost.
Unloaded RPM decided by friction and windage etc.
There is also BLDC motor variety which come under the DC label..
Max.

 

" In small DC motors, PM can be used for the stator. "- good advice; also where are you going to find a wound
stator in fractional HP gear head motors ?
Get out your table of conversions as you have meters, kilograms, & minutes & you want watts.
I came out with about 5 W / motor with out allowences for additional loads or maybe about 7.5 W ?

 

" In small DC motors, PM can be used for the stator. "- good advice; also where are you going to find a wound
stator in fractional HP gear head motors ?
Get out your table of conversions as you have meters, kilograms, & minutes & you want watts.
I came out with about 5 W / motor with out allowences for additional loads or maybe about 7.5 W ?

Meaning, wound stator is out for this situation?

 

Actually to distinguish between PM and shunt, the description should be 'shunt-wound field'
Series wound-field motors include automotive starters and Universal motor (power tools, vacuum motors) etc.
The nature of a series field motor is that it has very high starting torque, but essentially operates in a run away condition when unloaded.
This can also happen to a shunt wound field where the field supply is lost.
Unloaded RPM decided by friction and windage etc.
There is also BLDC motor variety which come under the DC label..
Max.

Wow, thats a lot of DC motors haha. In your opinion, which one suits best for this situation?

 

PM DC brushed or BLDC.
DC brushed is the simpler drive.
Max.

 

Is this just a paper project or is there hardware in its future ? As a start might figure what size of a motor is required. The last time I studied things like this it was about 69 years ago - still want to use my figures?

 

PM DC brushed or BLDC.
DC brushed is the simpler drive.
Max.

We will go for DC brush then. So may I know what should I do next?

 

Is this just a paper project or is there hardware in its future ? As a start might figure what size of a motor is required. The last time I studied things like this it was about 69 years ago - still want to use my figures?

Its a paper project. Sure, I appreciate your figures.

 

Is this just a paper project or is there hardware in its future ? As a start might figure what size of a motor is required. The last time I studied things like this it was about 69 years ago - still want to use my figures?

Its a paper project. Sure, I appreciate your figures.

 

Let us see your work. What is the magic of picking 30 deg. ? What is the sin of 30 deg. ? What is the relationship of work , power, potential energy, & time ?