Hydraulic Power Assist ( regenerative braking system )

I have an Introduction about the subject.

I want an analysis  about how the system works. Please add diagrams and images. 

in the conculsion, write a recommendation which system are better between the two system that mentioned in the introduction (hydraulic braking vs electric motor)

2 pages - Analysis ( how it works) and conclusion ( recommendation )

at least 3 sources

Attached: the introductions