Actuator systems and methods for vehicle closure panels

A method of operating an actuator system of a vehicle comprising the steps of:

• determining a position of a closure panel;
• determining a force that negates an effect of a counterbalance mechanism acting on the closure panel;
• and
• adjusting a target compensation force to be provided to a motor, of an actuator assembly using the force that negates the effect of the counterbalance mechanism acting on the closure panel.

An actuator system for a closure panel of a vehicle comprising:

• an actuator assembly comprising:
• an actuator housing,
• a power spring at least partially disposed in the actuator housing and adapted to apply a biasing member force to the closure panel, and
• a motor disposed in the actuator housing and configured to rotate a motor shaft operably coupled to an extensible member coupled to one of a body and the closure panel for opening or closing the closure panel;
• an actuator controller configured to control the motor and output an adjusted force based on the biasing member force to move the closure panel;
• and
• the actuator controller including:
• a closed loop current feedback motor control system configured to supply the motor with a drive current,
• a haptic control algorithm configured to determine a target torque the motor, controlled by the closed loop current feedback motor control system, applies to the closure panel, and
• a drive unit configured to convert the target torque from the haptic control algorithm into a target current for input into the closed loop current feedback motor control system.