How to drive DC motors with smart power ICs
... The EMF can also be sensed directly, rather than be simulated as in the V-I control setup, when the current IM is zero (EMF = VM-IM.RM). To achieve this the motor current must be switched off as quickly as possible. Motor inductance represents an obstacle since the energy it stores must first be dis ...
... The EMF can also be sensed directly, rather than be simulated as in the V-I control setup, when the current IM is zero (EMF = VM-IM.RM). To achieve this the motor current must be switched off as quickly as possible. Motor inductance represents an obstacle since the energy it stores must first be dis ...
HMC226 / 226E
... 1. Set logic gate and switch Vdd = +3V to +5V and use HCT series logic to provide a TTL driver interface. 2. Control inputs A/B can be driven directly with CMOS logic (HC) with Vdd of 3 to 8 Volts applied to the CMOS logic gates. 3. DC Blocking capacitors are required for each RF port as shown. Capa ...
... 1. Set logic gate and switch Vdd = +3V to +5V and use HCT series logic to provide a TTL driver interface. 2. Control inputs A/B can be driven directly with CMOS logic (HC) with Vdd of 3 to 8 Volts applied to the CMOS logic gates. 3. DC Blocking capacitors are required for each RF port as shown. Capa ...
AutomationNotebook Issue 5
... DataNet OPC uses Open Connectivity (OPC) technology to communicate live data from industrial devices to a Web page, with no HTML programming required. Data is then available for viewing, printing or archiving on any computer, anywhere the Internet or company intranet is accessible. For plants that u ...
... DataNet OPC uses Open Connectivity (OPC) technology to communicate live data from industrial devices to a Web page, with no HTML programming required. Data is then available for viewing, printing or archiving on any computer, anywhere the Internet or company intranet is accessible. For plants that u ...
distribution network
... It is a master/slave protocol used to operate sensors and actuators via a centralized controller ...
... It is a master/slave protocol used to operate sensors and actuators via a centralized controller ...
Distributed control system
A distributed control system (DCS) is a control system for a process or plant, wherein control elements are distributed throughout the system. This is in contrast to non-distributed systems, which use a single controller at a central location. In a DCS, a hierarchy of controllers is connected by communications networks for command and monitoring.Example scenarios where a DCS might be used include: Chemical plants Petrochemical (oil) and refineries Boiler controls and power plant systems Nuclear power plants Environmental control systems Water management systems Metallurgical process plants Pharmaceutical manufacturing Sugar refining plants Dry cargo and bulk oil carrier ships Formation control of multi-agent systems