Laboratory Stand “Automatic Tracking Motion Control”

1. Product overview

1.1 Overview This training device simulates the motion control process of automatic tracking in a solar panel photovoltaic power generation system. It automatically tracks the angle of direct sunlight, providing students with an intuitive understanding of the working principles and modes of the automatic tracking system. The analog light source is driven by a stepping motor to move in an arc, while the light intensity sensor is driven by a servo motor. The PLC collects real-time feedback light intensity change signals to control the sensor, ensuring it always tracks the position of the strongest point of the analog light source. This setup is ideal for teaching and skill training assessments in higher vocational schools, colleges, secondary vocational schools, and technical schools.

1.2 Features

1. The training platform adopts an aluminum profile column frame structure with open integrated control devices. It is equipped with universal wheels for flexibility and ease of use, making it durable and not easily damaged.
2. The experimental circuits and devices are fully equipped and can be used in combination to complete various course training contents.
3. The training platform includes a comprehensive safety protection system.

2. Performance parameters

1. Electrical control unit: Uses a steel sprayed plastic panel with components fixed on the surface. The installation wiring is adjustable. Main components include PLC, servo drive, stepper drive, power supply, control button indicator, etc.
2. Table body: All aluminum alloy structure with universal wheels at the bottom, allowing flexible movement and fixation. External wiring is connected by aviation plugs, ensuring convenience and reliability. Dimensions: 600×550×1500 mm (length, width, height).
3. Simulated light source: Aluminum profile frame structure with LED spotlights driven by a stepping motor. The running speed and position are programmable. Dimensions: 670×400×1200 mm (length, width, height).
4. Follow-beam unit: Aluminum profile frame structure with two servo motors driving photosensitive sensors for 2-axis motion tracking of the light source. The servo motors include an AC servo and a DC servo for mastering different control methods. Dimensions: 300×250×600 mm (length, width, height).

Working environment:

• Temperature: -10～+40℃
• Humidity: ≤80%
• Ambient air: Non-corrosive, non-flammable, no large amount of conductive dust

Power supply:

• Power consumption: ≤1000W
• Working power supply: AC220±5%
• Power supply: single-phase three-wire AC220±5%, 50Hz
• Working method: Continuous

Total weight: 100 Kg

3. System configuration The system is divided into three parts: electrical control unit, simulated motion light source, and automatic tracking motion unit. The main configuration includes:

1. Electrical control unit:
   • Electrical installation panel (1)
   • Siemens PLC-S7-1214C (1)
   • Siemens SM-1234 (1)
   • Siemens SM-1221 (1)
   • Siemens CB-1241 (1)
   • 4-port network switch (1)
   • DC24V switching power supply (1)
   • AC servo drive (1)
   • DC servo drive (1)
   • Stepper motor driver (1)
   • Leakage circuit breaker (1)
   • Single-phase modular socket (1)
   • Changeover switches (5)
   • Indicator lights (2)
   • Emergency stop switch (1)
   • Trunking guide rail (1 case)
2. Simulated light source unit:
   • Aluminum frame body (1)
   • LED light source (1)
   • Stepper motor (1)
   • Stepper motor reducer (1)
3. Follow light motion unit:
   • Steel structure frame (1)
   • Photosensitive sensor (1)
   • AC servo motor (1)
   • DC servo motor (1)
   • Reducer (2)
   • Position sensors (6)

4. Training content

1. Siemens PLC programming experiment
2. Siemens PLC analog expansion module application programming experiment
3. PLC communication experiment
4. AC servo motor parameter setting and control experiment
5. DC servo motor parameter setting and control experiment
6. Stepping motor parameter setting and control experiment
7. PLC control AC servo motor programming experiment
8. PLC control DC servo motor programming experiment
9. PLC control stepper motor programming experiment
10. Characteristic experiment of photosensitive sensor
11. Programming experiment of single-axis motion control
12. Programming experiment of dual-axis motion control
13. Automatic tracking motion control experiment