Yes, there are online platforms and websites that provide study materials specifically for the management control systems topic in the UPSC Management Optional subject. One such platform is EduRev, which offers comprehensive study materials and resources for UPSC aspirants. Below are the details of the study materials provided by EduRev for the management control systems topic:

1. Notes and Lectures:
- EduRev provides detailed notes and lectures on management control systems, covering various aspects such as the concept, principles, and techniques of control systems.
- The notes are prepared by experienced educators and experts in the field, ensuring accurate and reliable information.

2. Previous Year Question Papers:
- EduRev offers previous year question papers for the management control systems topic, allowing aspirants to practice and understand the exam pattern.
- Solving these question papers helps in familiarizing oneself with the type of questions asked in the UPSC Management Optional exam.

3. Mock Tests and Quizzes:
- EduRev provides mock tests and quizzes specifically designed for the management control systems topic.
- These tests help aspirants in assessing their preparation level and identifying areas that require improvement.

4. Study Material in Different Formats:
- EduRev offers study materials in various formats such as PDFs, videos, and online quizzes, providing flexibility to aspirants in choosing their preferred learning style.
- The study materials are well-organized and structured, covering all the important topics related to management control systems.

5. Discussion Forum:
- EduRev has an active discussion forum where aspirants can interact with fellow UPSC aspirants and subject experts.
- Aspirants can post their doubts or queries related to the management control systems topic and get them resolved by the community or experts.

In conclusion, EduRev is an online platform that provides comprehensive study materials, including notes, lectures, previous year question papers, mock tests, and quizzes, specifically for the management control systems topic in the UPSC Management Optional subject. It offers a range of resources in different formats, ensuring effective and efficient preparation for the exam.