Transmission and method of shift control for transmission

A transmission, comprising:

• a first clutch being capable of switching between a connection state being connected to a power source and a disconnection state being disconnected from the power source;
• a second clutch being capable of switching between a connection state being connected to the power source and a disconnection state being disconnected from the power source;
• a first input shaft being detachably connected to the power source by the first clutch;
• a second input shaft being detachably connected to the power source by the second clutch;
• an output shaft;
• a first change-speed mechanism being disposed between the first input shaft and the output shaft, and comprising a first gear mechanism for making a combination of a plurality of change-speed stages and a first gear-mechanism selector for selecting one of the change-speed stages;
• a second change-speed mechanism being disposed between the second input shaft and the output shaft, and comprising a second gear mechanism for making a combination of a plurality of change-speed stages and a second gear-mechanism selector for selecting one of the change-speed stages;
• a controller for controlling the first clutch, the second clutch, the first gear-mechanism selector, and the second gear-mechanism selector, and comprising a change-speed controller for adopting one of the change-speed stages, which can be selected by one of the first gear-mechanism selector and second gear-mechanism selector being set on one of the first input shaft and second input shaft that the first clutch and/or second clutch disconnects from the power source, as a subsequent change-speed stage and then having the one of the first gear-mechanism selector and second gear-mechanism selector operate with the subsequent change-speed stage;
• the controller further comprising:
• a rapid-deceleration judge for judging whether a vehicle is in ordinary condition or in rapid-deceleration condition;
• a rapid-deceleration processor including a torque-fluctuation inhibitor, and an after-rapid-deceleration change-speed stage anticipator;
• the torque-fluctuation inhibitor being adapted for putting the one of the first gear-mechanism selector and second gear-mechanism selector in no-power transmission state in which power transmission from the power source is shut off, or in power transmission state in which the one of the first gear-mechanism selector and the second gear-mechanism selector is held in power transmission by way of a current change-speed stage or other change-speed stages being lower than the current change-speed stage, when the vehicle is in the rapid-deceleration condition;
• and
• the after-rapid-deceleration change-speed stage anticipator being adapted for anticipating a subsequent change-speed stage being adapted for restarting or reaccelerating the vehicle that has come out of the rapid-deceleration condition, and then operating the other one of the first gear-mechanism selector and second gear-mechanism selector that can cope with the resulting subsequent change-speed stage.