Decompression system, control device, and control method

A control device comprising:

• a torque command generation unit configured to generate a torque command to operate, in accordance with an operation command, a motor of an electric pump configured to decompress a primary-side space with respect to a secondary-side space;
• a limiter configured to limit the torque command to a limit value or less;
• a power conversion unit configured to generate driving power corresponding to the torque command passed through the limiter and supply the driving power to the motor;
• and
• a limit changing unit configured to temporarily increase the limit value in response to opening of the decompressed primary-side space with respect to the secondary-side space.

A control method comprising:

• generating a torque command to operate, in accordance with an operation command, a motor of an electric pump configured to decompress a primary-side space with respect to a secondary-side space;
• limiting the torque command to a limit value or less;
• generating driving power corresponding to the torque command limited to the limit value or less and supplying the driving power to the motor, and
• temporarily increasing the limit value in response to opening of the decompressed primary-side space with respect to the secondary-side space.