Otis Elevator Company

Leonida Lorquando

Ronnie E Thebeau

Sally Day Mahoney

Gianluca Foschini

Sandro Bonfiglioli

An elevator system () includes a propulsion power assembly () with a power rating below that required to move a fully loaded elevator car () using a contract or design motion profile. One example propulsion power assembly () uses more than one motion profile based upon existing load conditions. One example uses a first motion profile including a first power parameter limit for load conditions at or below a selected load threshold that is less than a maximum load capacity of the car (). The propulsion power assembly () uses a second motion profile with a lower power parameter limit for other load conditions. In one example, electrical current is the power parameter selected as a decision parameter dictating which profile to select based on an existing load. Another example propulsion power assembly () selects at least one of a speed limit or an electrical current limit based on an existing load and maintains a speed to stay within the selected limit.

Growing community of inventors

Bologna, Italy

Leonida Lorquando