Robinho has set his sights on securing Manchester City a first Premier League title.
The 24-year-old signed from Real Madrid for a British record £32.4m just minutes before Monday’s transfer deadline.
“I want to help the manager and the team to win the Premier League, that’s my ambition,” he told the club website.
“I knew that City are a very big club, there’s a great team there and this is an exciting project.”
After an injection of funds from new investors Abu Dhabi United Group, City managed to outbid Chelsea to bring the Brazilian to Eastlands.
Robinho had seemed certain to move to Stamford Bridge, telling a press conference on Sunday that “I am only thinking of Chelsea” as he attempted to engineer a move away from Madrid.
But he said the opportunity to play alongside his international team-mates Jo and Elano at City was instrumental in his decision to join Mark Hughes’ side.
“They are my friends,” Robinho explained.
“Having such great players at City was one of the reasons why I decided to come here.”
Robinho met Hughes in London on Tuesday before flying to South America for Brazil’s 2010 World Cup qualifiers against Chile and Bolivia.
“I met with the manager and it went very well,” he added.
“I know that he was a great player and I think that will be a big help to me.”
Robinho was also pleased to hear that City fans have already begun buying replica shirts inscribed with his name.
“That makes me very, very happy, and I want to repay this excitement by performing on the pitch, and scoring a lot of goals for the fans,” he added.