Chapters authored
Design of Controller for Brushless Direct Current Motors Using FPGA
Brushless direct current (BLDC) motors are the pillar of advanced controllers. This chapter presents a portion of the central thoughts hidden plan of FPGA based BLDC motor controller. It covers a considerable amount of ground, yet at a genuinely essential level to make central ideas clear. This chapter gives a great strategy which is useful to aid the outline and control of financially savvy, productive brushless direct current (BLDC) motors. Speed Control of BLDC motor utilizing PIC microcontrollers requires more equipment, and with the accessibility of FPGA adaptable highlights inspired to build up a financially savvy and dependable control with variable speed go. In this chapter, utilizing an algorithm which utilizes the Resolver signals caught from the motor is created with the assistance of Resolver to Digital converters. The VHDL program produces the terminating beats required to drive the MOSFETs of three stage completely controlled scaffold converter driven by drivers. The provided outline procedure is observed to be great and proficient.
Part of the book: Digital Systems
Ecofriendly Marigold Dye as Natural Colourant for Fabric
This chapter highlights on the applications of marigold plant extracts as an antibacterial and antimicrobial best dyer for textiles. Tagetes erecta usually known as Marigold is a vital wellspring of carotenoids and lutein, developed as a nursery plant. Marigold blossoms are yellow to orange red in colour. Now a days, lutein is transforming into an unquestionably common powerful fixing, used as a part of the medicines, food industry and textile coatings. This has increased more noticeable vitality of marigold and its exceptional concealing properties. Regardless of the way that marigold blooms; its extract has been used as a measure of veterinary supports. The examination was directed to contemplate the usage of a concentrate of marigold as a trademark shading, which is antibacterial and antimicrobial. The marigold extract ability was focused on colouring of the cotton fabrics. Investigations of the dye ability, wash fastness, light fastness, antibacterial tests and antimicrobial tests can be endeavoured. Studies have exhibited that surface concealing was not impacted by washing and drying in the shadow/sunlight. These surprises reveal that the concentrate of marigold extract can be used for cotton fabrics.
Part of the book: Abiotic Stress in Plants