Pingmei Fan, Hanwu Li, Mengdie Hu
In modern intelligent manufacturing, enterprises face increasingly dynamic market environments where production costs, consumer demand, and pricing strategies interact in complex, nonlinear ways. Traditional static or rule-based decision models fail to capture these interdependencies, often leading to suboptimal profit margins and excessive inventory accumulation. To address this challenge, this study proposes a profit-oriented production and pricing optimization system for manufacturing enterprises based on Proximal Policy Optimization (PPO), an advanced reinforcement learning algorithm well-suited for continuous control and dynamic environments. The proposed system autonomously learns optimal production quantities and pricing strategies through interactions with a simulated economic environment characterized by stochastic demand, fluctuating raw material costs, and inventory constraints. By modeling the problem as a Markov Decision Process, the PPO agent optimizes a reward function that balances short-term profitability with long-term inventory stability. Experimental results on a simulated manufacturing dataset demonstrate that the proposed PPO-based optimization system achieves an 12.8% improvement in cumulative profit, a 16.4% reduction in inventory risk, and a 50.9% decrease in final loss compared with the Deep Q-Network (DQN) baseline. Moreover, the PPO-P³OS framework exhibits highly stable convergence and superior adaptability under dynamic market fluctuations, highlighting its effectiveness in real-time production and pricing decision-making for manufacturing enterprises. These results highlight the model's ability to dynamically adapt to market volatility and enhance decision-making efficiency. This research contributes to the integration of reinforcement learning and business analytics, offering a scalable, data-driven framework for real-time profit optimization in intelligent manufacturing systems.