System and method for controlling a powershift transmission

An agricultural vehicle, comprising:

• an engine;
• a transmission with multiple gear ratios driven by the engine;
• and
• a controller that, in operation, adjusts a gear ratio of the transmission using an algorithm, wherein the algorithm, in operation, performs the following steps:
• reduce a torque capacity of a first offgoing clutch of the transmission to a first torque target;
• reduce a torque capacity of a second offgoing clutch of the transmission to a second torque target;
• once the first and second offgoing clutches reach the first and second torque targets, respectively, adjust a torque capacity of a first oncoming clutch of the transmission to a third torque target such that the gear ratio of the transmission is modified in a first direction;
• and
• after the first oncoming clutch reaches the third torque target, increase the torque capacity of the first oncoming clutch to a desired torque capacity,
• wherein the algorithm, in operation, adjusts the torque capacities of the first offgoing clutch and the first oncoming clutch on an incremental basis over a number of individual control cycles to reach a respective torque target from a starting torque capacity.