The brushless electric motor, the controller and the planetary spindle drive make up the core of the actuator. The mechanical system is connected via a hydrostatic cylinder, and the data bus is connected via CAN, CAN FD or Flexray.
The system has three main components: the Electronic Control Unit (ECU), the Actuator Control Unit (ACU) and a reservoir which collects the returned brake fluid.
The ACU is made up of components such as an integrated Power Transmission Unit (PTU), valves, the simulation chamber and the brake master cylinder.
Water level sensors for fuel filter modules determine whether too much liquid are collected in the assembly during operation.
1. Electric vacuum pump
Electric vacuum pump with control unit (Source: Volkswagen Ag)
The UTA wing solution is a five-element configuration with a slat, main plane and three flaps.
The first flap is controlled by one servo, and since the top two flaps do not have as much moment on them, they are both controlled by the second servo and coupled together on the outside of the wing.
To control the wings, servo motors were integrated into the main plane and a light weight carbon linkage used to connect each flap to the motor, producing a very light weight actuation system. The motors themselves are controlled by a UTA-designed onboard computer that takes various sensory inputs from the car, calculates the optimum wing position based on the track scenario, and outputs the wing position to the front and rear wing in real time without any driver input. Track data has already shown large gains in acceleration as well as higher cornering and straight line speeds.
Flap actuation linkage (Source: UTA Racing)