MCU-Based Detection and Control System Design of a Kernel Hardness Tester
A novel kernel hardness tester was introduced in the paper, and the detection and control system was studied in detail. The stylus of the tester is forced into grain which placed in a container. The force which was acquired by a load cell and the displacement of the stylus which was measured by an optical encoder were used as a new hardness index. The core microcontroller unit (MCU) applied in the paper is STC89C52 to accomplish the data acquisition and the position control of a DC servo motor.
Y. Cao et al., "MCU-Based Detection and Control System Design of a Kernel Hardness Tester", Applied Mechanics and Materials, Vols. 44-47, pp. 4018-4022, 2011