Design of Heterogeneous Drive System Based on Object-oriented Devices and Speed Sensor

Pu, Wen-Cheng; Lin, Yu-Dian; Chao, Kuei‐Hsiang

doi:10.18494/sam.2019.2379

Cited by 2 publications

(12 citation statements)

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“…In addition, in some cases, the signal is directly sent to the rectified bus DC to communicate with the remote-driven induction motor. (8)(9)(10) In either case, the power of the transmitted command signal is insignificant compared with the power of the power supply, and the signal is easily attenuated by the saturation characteristics of the magnetic circuit and the influence of the power network environment. The DALI bus directly encodes the signal into a power signal in the Manchester code format (also known as the Manchester code power wave).…”

Section: Methodsmentioning

confidence: 99%

“…The related values of γ are shown in Table 1, and the appropriate γ is selected according to the communication environment. (8)(9)(10) Finally, Eq. ( 1) is used to convert the PK conversion packet into a relative variable Nmb that is used to control the number of pulse outputs.…”

Section: Pkmmentioning

confidence: 99%

“…Because the communication environment changes randomly, ideally both parties should be able to adjust the best communication parameters at any time PKM power waves have the advantages of PK encoding, which can automatically identify the communication speed and data packet length used in motor drives and avoid baud rate discrimination by an RS-232 interface. (8,9) However, γ cannot be automatically selected. Therefore, we also propose a strategy based on the PK encoding method for automatically adjusting the communication environment parameter γ.…”

Section: Strategy For Automatic Adjustment Communication Environment Parametersmentioning

confidence: 99%

“…In the formula, H represents the amplitude of the signal, T s represents the signal period, f represents the channel frequency, and P represents the probability of the occurrence of the bit. (8,9) ( )…”

Section: Introductionmentioning

confidence: 99%

“…Figure 5 shows the frequency distribution of the data '10010' after Manchester encoding into ±5 V transmission electrical signals. (9)(10)(11) The spectrum in Fig. 5 is widely distributed, which directly shows that the communication space is flooded with interference sources of different frequencies at any time and indirectly shows that it is difficult to use a magnetic shielding design.…”

Section: Introductionmentioning

confidence: 99%

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Development of Automatic Digital Control Interface for Addressing a Lighting Equipment System Using High Power Load

Pu¹,

Tsai²

2021

Sensors and Materials

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Recently, automation technology for electrical equipment has become developed. The control technology platform under the IEC 62386 standard is an automation platform widely used in Europe and the US. Its main purpose is to construct a digital addressable lighting interface (DALI) that can remotely and randomly control and detect lighting and reduce labor requirements. The key to this technology is to develop the DALI bus, which can simultaneously transmit power and communication commands to a load. This can reduce the signal line requirements for lighting equipment automation and simplify the wiring. However, the DALI bus uses Manchester encoding technology to modulate a communication command to an electrical signal. Although it can also provide power, the communication command is randomly changed. The random distribution of harmonics caused by control commands carried out during the transmission of communication commands after modulation creates electromagnetic interference that cannot be predicted and prevented. Simultaneously, the random electrical signal modulated by Manchester encoding technology directly causes a system to be unable to provide stable and high power; therefore, the load power and loop distance must be limited. We propose the replacement of Manchester encoding technology with Pu's count modulation (PKM) technology and propose a communication control platform that can control the transmission of power. In addition to solving the problem of the DALI bus, the DALI bus using PKM technology also increases the reliability of communication and reduces the hardware cost. A bidirectional communication system is established by using a Hall component to sense the current flowing through the specified DALI device and to extract the data packaged in the current. Finally, an Atmel chip and MATLAB ® and Excel software are used for analysis to verify the feasibility of the proposed platform.

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Section: Methodsmentioning

confidence: 99%

Section: Pkmmentioning

confidence: 99%

Section: Strategy For Automatic Adjustment Communication Environment Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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