Swash-Plate Compressor Control for Stable Evaporator Temperature

The patent applies dynamics by transitioning from fixed gain values to dynamically adjustable gain values in the proportional-integral control system. The gain values are adjusted in real-time based on the temperature deviation between the target and actual evaporator temperatures, allowing the system to adapt its control strength according to the current operational state. This resolves the contradiction by maintaining implementation simplicity while significantly improving temperature control stability and convergence speed through adaptive gain scheduling.

The patent implements parameter changes by modifying the control coefficients (proportional gain and integral gain) based on the temperature deviation magnitude. When the temperature deviation is large, larger gain values are applied to accelerate temperature convergence. When the deviation is small, smaller gain values are used to prevent overshoot and ensure stable settling. This dynamic parameter adjustment resolves the contradiction between simple fixed-gain implementation and reliable temperature control.

The patent resolves this contradiction by making the gain values dynamic rather than fixed. The control system continuously monitors the temperature deviation and adjusts the proportional and integral gain values accordingly. When the temperature deviation is large, larger gain values are applied to reduce response time and accelerate convergence. When the deviation becomes small, the gain values are reduced to prevent excessive overshoot and undershoot, thereby maintaining system stability. This dynamic adjustment strategy allows the system to achieve both fast response and stable temperature control.

The patent applies parameter changes by varying the control coefficients based on the magnitude of temperature deviation. The proportional gain and integral gain are adjusted as functions of the temperature error, allowing the system to optimize its response characteristics for different operational phases. This resolves the contradiction between fast response (requiring large gains) and stability (requiring small gains) by adapting the parameter values to the current system state.

The patent resolves this contradiction by implementing dynamic gain adjustment based on temperature deviation. During the early stage when the temperature deviation is large, larger gain values are applied to accelerate the convergence process and reduce stabilization time. As the temperature approaches the target value and the deviation becomes small, the gain values are automatically reduced to ensure smooth settling without oscillations or overshoot. This time-varying gain strategy achieves both fast stabilization and stable temperature control.

The patent applies parameter changes by making the proportional and integral gain values dependent on the temperature error magnitude. This allows the control system to use aggressive control parameters when far from the target (reducing stabilization time) and conservative parameters when close to the target (ensuring stability without overshoot). The dynamic parameter adaptation resolves the contradiction between fast convergence and stable settling.