| 主权项 |
1. A clutch system comprising a hydraulic control circuit and a hydraulic system, the hydraulic system comprising hydraulic fluid, hydraulic fluid connections, an electric motor powering a pump, an actuation piston of a clutch pack configured to activate or deactivate the clutch pack based on an amount of hydraulic fluid received from the pump, a pressure control valve connected to the clutch actuation piston, a pressure sensor between the electric motor and the clutch actuation piston, a temperature sensor between the electric motor and the pressure control valve, and a sump, and the hydraulic control circuit comprising at least control and data connectivity to the hydraulic system, a processor, a memory device, and processor-executable control instructions stored in the memory device, the control instructions comprising programming to perform, when executed by the processor, a method for controlling hydraulic pressure comprising:
receiving a target hydraulic pressure; detecting a current hydraulic pressure with the pressure sensor; detecting a temperature of the hydraulic fluid with the temperature sensor; generating and outputting pressure control valve commands based on the detected current hydraulic pressure, the detected temperature, and the target hydraulic pressure by implementing proportional integral derivative (PID) calculations and sliding mode calculations while carrying out a closed loop pressure control; converting the target hydraulic pressure into motor control commands and into motor duty cycle commands by implementing a linear quadratic regulator (LQR) calculation while carrying out a closed loop control; controlling the electric motor by outputting the motor duty cycle commands to inputs of the electric motor; and controlling the pressure control valve by inputting the pressure control valve commands to inputs of the pressure control valve. |
