System for vehicle wheelspin detection and correction

A system for detecting and correcting wheelspin in an electric vehicle, comprising:

• an electric motor having a rotor coupled to one or more drive wheels, the one or more drive wheels operable to propel the electric vehicle in response to rotation of the rotor of the electric motor;
• an inertial measurement unit (IMU) attached to the electric vehicle and operable to provide an IMU-measured vehicle acceleration;
• a motor controller comprising control circuitry in communication with the electric motor and IMU, wherein the motor controller:
• (i) determines a vehicle acceleration based on information received from the IMU;
• (ii) determines a motor-rotor estimated vehicle acceleration based on a measured acceleration of a rotor of the electric motor;
• (iii) detects wheelspin by determining if the IMU-measured vehicle acceleration is less than the motor-rotor estimated vehicle acceleration;
• and
• the system further comprising user controls in communication with the motor controller operable to provide user-desired speed, acceleration, and direction information to the motor controller.

A system for detecting and correcting wheelspin in an electric vehicle, comprising:

• an electric motor having a rotor coupled to one or more drive wheels, the one or more drive wheels operable to propel the electric vehicle in response to rotation of the rotor of the electric motor;
• a global positioning system (GPS) receiver attached to the electric vehicle and operable to provide geographic positional and/or acceleration information;
• and
• a motor controller comprising control circuitry in communication with the electric motor and GPS receiver, wherein the motor controller:
• determines a GPS-estimated vehicle acceleration based on information received from the GPS receiver;
• determines a motor-rotor estimated vehicle acceleration based on a measured acceleration of a rotor of the electric motor;
• and
• detects wheelspin by determining if the GPS-estimated vehicle acceleration is less than the motor-rotor estimated vehicle acceleration, wherein upon detection of wheelspin the motor controller decreases power to the electric motor until no wheelspin is detected.

A system for detecting and correcting wheelspin in an electric vehicle, comprising:

• an electric motor having a rotor coupled to one or more drive wheels, the one or more drive wheels operable to propel the electric vehicle in response to rotation of the rotor of the electric motor;
• a global positioning system (GPS) receiver attached to the electric vehicle and operable to provide geographic positional and/or acceleration information;
• and
• a motor controller comprising control circuitry in communication with the electric motor and GPS receiver, wherein the motor controller:
• (i) determines a GPS-estimated vehicle acceleration based on information received from the GPS receiver;
• (ii) determines a motor-rotor estimated vehicle acceleration based on a measured acceleration of a rotor of the electric motor;
• iii) detects wheelspin by determining if the GPS-estimated vehicle acceleration is less than the motor-rotor estimated vehicle acceleration;
• and
• the system further comprising user controls in communication with the motor controller operable to provide user-desired speed, acceleration, and direction information to the motor controller.

A system for detecting and correcting wheelspin in a vehicle, comprising:

• a drive motor coupled to a drive wheel, wherein the drive wheel is operable to propel the vehicle in response to a movement of the motor;
• an inertial measurement unit (IMU) attached to the vehicle and operable to provide an IMU-measured vehicle acceleration;
• and
• a motor controller comprising control circuitry in communication with the motor and IMU, wherein the motor controller:
• determines a vehicle acceleration based on information received from the IMU;
• determines a motor estimated vehicle acceleration based on a measured acceleration of a component of the motor;
• and
• detects wheelspin by determining if the IMU-measured vehicle acceleration is less than the motor estimated vehicle acceleration, wherein upon detection of wheelspin the motor controller decreases power to the motor until a cessation of wheelspin is detected.